CFD Simulations for Ships with Rotating Propeller - Self propulsion, Cavitation & Ship radiated noise -

Size: px
Start display at page:

Download "CFD Simulations for Ships with Rotating Propeller - Self propulsion, Cavitation & Ship radiated noise -"

Transcription

1 CFD Simulations for Ships with Rotating Propeller - Self propulsion, Cavitation & Ship radiated noise - NMRI, Tokyo JAPAN N.Sakamoto and H.Kamiirisa 1

2 Table of Contents 1.Background and objective 2.Overview of CFD solver 3.Test cases 4.Computational setup 5.Results and discussion 6.Concluding remarks 2

3 1. Background Propulsive performance of commercial vessels EEDI regulations (IMO) over over Design exploration in Hull form Energy saving device Propeller Powering estimation by CFD Complex geometry/physics Grid generation Propeller-hull interaction Class NK Annual Fall Seminar (2012) Kawakita et al. (2012) Japan Shipbuilding Digest (2013) 3

4 1. Objective: Propulsive performance 1:CFD analyses in Resistance and self-propulsion Propeller open water 2:Validation in Self-propulsion factors (SPFs) Local flow field in model scale 3:Estimate Effect of energy saving device Accuracy of the present methods 4

5 1. Background Propeller cavitation and noise Marine environmental protection Merchant ship in St.Lawrence at 1 mile ( Regulations ICES CRR No.209 (1995) IMO MEPC.1/Circ.833 on For commercial ships, yet non-mandatory Regulate SPL (ICES) Regulate Kp i (IMO): Kp 1 3kPa, Kp 2 2kPa for C B <0.65 Kp 1 5kPa, Kp 2 3kPa for C B >0.65 Kamiirisa and Goto (2005) ICES 5

6 1. Objective: Propeller cavitation and noise 1:CFD analyses in Propeller performance Propeller cavitation 2:Validation in Cavitation pattern Near field cavitation noise in model and full scale Feasibility of empirical formula with CFD 3:Understand Present capability of CFD to ship radiated noise 6

7 2. Overview of CFD solver STAR-CCM (double-precision ver.) k-ω SST (all turbulent), DES for cavitation in fine grid - Low Rn near wall treatment (y+~1) Cavitation model by Schnerr and Sauer (2001) - NO hydrostatic component at this time VoF for interface capturing Overset for propeller rotation SIMPLE for v-p coupling MPI parallelization 2 nd order in space Propeller rotation in 3deg(self-propulsion), 1deg(cavitation) per time-step. 7

8 3. Test cases: Propulsive performance Japan Bulk Carrier (JBC) Energy saving duct at stern Resistance and self-propulsion data Local flow measurement by PIV without/with propeller rotation! Geometries and exp. data open to public at Hull (model scale) L pp (m) 7.0 B (m) d (m) C B Propeller (MPNO.687) D p (m) ae P/D Z 5 Blade section AU 8

9 3. Test cases: Propeller cavitation and noise Propellers for TS Seiun-1 st CP HSP2 D p (m) ae P/D Z 5 Blade section Mod. MAU Mod. SRI-B - Decreased pitch - Tip-unloaded HSP2 retrofitted after CP to reduce hull vibration Both model and full scale measurement data available. 9

10 4. Computational setup: Propulsive performance Flow condition (based on CFDWS Tokyo 2015) (Fn, Rn)=(0.0, 7.46E+06), n p (rps)=7.8(w.o. duct), 7.5(with duct) Grid trimmed cell, overset linear scheme for calculating interpolation coefficients from donors to receptors. flux correction activated. Stator(hull) 2.02M Rotator(prop.) 3.95M Total 5.97M 10

11 4. Computational setup: Propeller cavitation and noise Flow condition (based on Kudo et al. 1989) n p (rps) Rn(kempf) K T σ n CP 6.5E HSP2 7.0E Grid (sliding/overset) Local refinement to resolve sheet and tip-vortex cavitation Approx. 19M cells in total. 0.7D p (Hasuike et al. 2010) 11

12 5. Results: Propulsive performance Effect of the duct to resistance and SPFs C tm x10-3 Exp. CFD w.o. duct with duct Relative difference very well predicted! Contribute for further design explorations. K T -identity method for self-propulsion analysis 12

13 5. Results: Propulsive performance Thrust distribution (θ=0 o, 24 o, 48 o ), back side Pitch distribution can be increased up to r/r~0.6 for the propeller WITH duct. n p may decrease yet yields the same thrust. 13

14 5. Results: Propulsive performance Vortical structure Tip and hub vortices are the same. Flow separation at the bottom of the duct wake gain valid in full scale? Difference in vortices behind the propeller effect of n p? 14

15 5. Results: Propeller cavitation Cavitation pattern (Void fraction=0.1) Nuclei radius=1.0e-6(m) Nuclei density=1.0e+14(1/m 3 ) Click to animate Sheet cavitation well resolved, TVC needs more resolution. Phase & amplitude difference in K p and V c due to skew. 15

16 5. Results: Propeller cavitation Validation in cavitation extent port starboard port starboard θ=0 θ=20 θ=40 θ=60 θ=0 θ=20 θ=40 θ=60 Exp.data: Kurobe et al. (1983) 16

17 5. Results: Propeller cavitation noise Overview of the validation data (SR183 Final report) B&K 8103 Levkovskii s scaling law (model to full) Wire mesh wake in model scale n=163rpm in full scale σ ns = σ nm Geo-sym hydrophone location B&K 8103 Brown s formula for empirical method K: empirical const. (=163) B: # of blade, Dp: prop.dia., A D : blade area Compute Ac/A D by CFD! 17

18 5. Results: Propeller cavitation noise Direct estimation from CFD solution Model scale Full scale Tonal noise well resolved. Relative difference between CP and HSP2 captured well in tonal noise. ( Wake and sheet cavitation patterns are well reproduced.) Broadband noise are fair. ( Bubble growth and collapse cannot be well resolved.) 18

19 5. Results: Propeller cavitation noise Indirect estimation from CFD(model scale)+brown s formula Brown s formula gives appropriate upper-bound. ( A c /A D well predicted.) 19

20 6. Concluding remarks Propulsive performance Still needs diagnostics in POT (both exp. and CFD) Relative difference in SPFs very well predicted with and without duct configurations. Local physics helps for design exploration. Propeller cavitation noise Sheet cavitation pattern well predicted. Quantification of cavitation extent feasible by CFD. Tonal noise well predicted. Broadband noise fair, yet empirical formula is still useful together with CFD. 20

Propeller Particulars and Scale Effect Analysis of ECO-Cap by CFD

Propeller Particulars and Scale Effect Analysis of ECO-Cap by CFD Propeller Particulars and Scale Effect Analysis of ECO-Cap by CFD List of symbols Masafumi Okazaki, Taro Kajihama, Kenta Katayama, Yoshihisa Okada, Nakashima Propeller Co.,Ltd. Okayama/Japan, m-okazaki@nakashima.co.jp

More information

A Framework for Energy Saving Device (ESD) Decision Making

A Framework for Energy Saving Device (ESD) Decision Making A Framework for Energy Saving Device (ESD) Decision Making Authors: J. H. de Jong, G.J.D. Zondervan Presented by J.H. de Jong Contents 1. Background 2. Propulsion improvement 3. Practical application of

More information

Moving ahead powerfully: MAN Diesel & Turbo optimizes the efficiency of ship propellers using cutting-edge CFD simulation methods

Moving ahead powerfully: MAN Diesel & Turbo optimizes the efficiency of ship propellers using cutting-edge CFD simulation methods Moving ahead powerfully: MAN Diesel & Turbo optimizes the efficiency of ship propellers using cutting-edge CFD simulation methods Keun Woo Shin MAN Diesel & Turbo Ulrich Feldhaus Feldhaus Marketing & Datentechnik

More information

CFD on Cavitation around Marine Propellers with Energy-Saving Devices

CFD on Cavitation around Marine Propellers with Energy-Saving Devices 63 CFD on Cavitation around Marine Propellers with Energy-Saving Devices CHIHARU KAWAKITA *1 REIKO TAKASHIMA *2 KEI SATO *2 Mitsubishi Heavy Industries, Ltd. (MHI) has developed energy-saving devices that

More information

Cavitation CFD using STAR-CCM+ of an Axial Flow Pump with Comparison to Experimental Data

Cavitation CFD using STAR-CCM+ of an Axial Flow Pump with Comparison to Experimental Data Cavitation CFD using STAR-CCM+ of an Axial Flow Pump with Comparison to Experimental Data Edward M. Bennett, Ph.D. Vice President of Fluids Engineering March 17, 2014 The Project Mechanical Solutions,

More information

Advanced Design of a Ducted Propeller with High Bollard Pull Performance

Advanced Design of a Ducted Propeller with High Bollard Pull Performance First International Symposium on Marine Propulsors smp 09, Trondheim, Norway, June 009 Advanced Design of a Ducted Propeller with High Bollard Pull Performance Tadashi Taketani 1, Koyu Kimura 1, Norio

More information

An Investigation into Computational Modelling of Cavitation in a Propeller s Slipstream

An Investigation into Computational Modelling of Cavitation in a Propeller s Slipstream Fifth International Symposium on Marine Propulsion smp 17, Espoo, Finland, June 2017 An Investigation into Computational Modelling of Cavitation in a Propeller s Slipstream Naz Yilmaz 1, Mahdi Khorasanchi

More information

Coupled Simulation of Multiphase Fluid Flow & Multiple Body Motion: Oil Flow in a Rotating Spur-gear System

Coupled Simulation of Multiphase Fluid Flow & Multiple Body Motion: Oil Flow in a Rotating Spur-gear System Coupled Simulation of Multiphase Fluid Flow & Multiple Body Motion: Oil Flow in a Rotating Spur-gear System Christine Klier, Matthias Banholzer, Kathleen Stock, Ludwig Berger Oil flow in a rotating spur-gear

More information

CFD application for an icebreaker propeller design

CFD application for an icebreaker propeller design Fifth International Symposium on Marine Propulsors smp 17, Espoo, Finland, June 2017 CFD application for an icebreaker propeller design Mikhail P. Lobachev, Timur I. Saifullin, Andrei E. Taranov, Irina

More information

A Full Scale CFD Analysis of the Twin Fin Propulsion System

A Full Scale CFD Analysis of the Twin Fin Propulsion System Fourth International Symposium on Marine Propulsors smp 15, Austin, Texas, USA, June 2015 A Full Scale CFD Analysis of the Twin Fin Propulsion System Tobias Huuva 1, Simon Törnros 1 1 Caterpillar Propulsion

More information

Numerical and Experimental Investigation into Cavitation of Propellers Having Blades Designed by Various Load Distributions near the Blade Tips

Numerical and Experimental Investigation into Cavitation of Propellers Having Blades Designed by Various Load Distributions near the Blade Tips First International Symposium on Marine Propulsors smp 09, Trondheim, Norway, June 2009 Numerical and Experimental Investigation into Cavitation of Propellers Having Blades Designed by Various Load Distributions

More information

TURN DOWN THE VOLUME. Our Proposals to Save Marine Life From Underwater Noise Pollutions. Strangers

TURN DOWN THE VOLUME. Our Proposals to Save Marine Life From Underwater Noise Pollutions. Strangers TURN DOWN THE VOLUME Our Proposals to Save Marine Life From Underwater Noise Pollutions Strangers Contents 1. Background Why are whales dying? Propeller Cavitation 2. Solutions Propeller design Technologies

More information

Kappel Propellers and Other Efficiency Improving Devices. Presentation by MAN Diesel & Turbo

Kappel Propellers and Other Efficiency Improving Devices. Presentation by MAN Diesel & Turbo Kappel Propellers and Other Efficiency Improving Devices Presentation by MAN Diesel & Turbo Agenda EEDI aspects in general Various efficiency improving devices The Kappel propeller concept Customised rudder

More information

Development of Contra-Rotating Propeller with Tip-Raked Fins

Development of Contra-Rotating Propeller with Tip-Raked Fins Second International Symposium on Marine Propulsors smp, Hamburg, Germany, June 2 Development of Contra-Rotating Propeller with Tip-Raked Fins Yasuhiko Inukai IHI Marine United Inc., Tokyo, Japan ABSTRACT

More information

Report of the Specialist Committee on Cavitation. Presented by L. Briançon-Marjollet - France

Report of the Specialist Committee on Cavitation. Presented by L. Briançon-Marjollet - France Report of the Specialist Committee on Cavitation Presented by L. Briançon-Marjollet - France 25 th International Towing Tank Conference Fukuoka, Japan 16 September 2008 Committee Membership Dr. Laurence

More information

IMO NOISE FROM COMMERCIAL SHIPPING AND ITS ADVERSE IMPACTS ON MARINE LIFE. Reducing underwater noise pollution from large commercial vessels

IMO NOISE FROM COMMERCIAL SHIPPING AND ITS ADVERSE IMPACTS ON MARINE LIFE. Reducing underwater noise pollution from large commercial vessels INTERNATIONAL MARITIME ORGANIZATION E IMO MARINE ENVIRONMENT PROTECTION COMMITTEE 59th session Agenda item 19 MEPC 59/19/1 6 May 2009 Original: ENGLISH NOISE FROM COMMERCIAL SHIPPING AND ITS ADVERSE IMPACTS

More information

EFFECT OF SURFACE ROUGHNESS ON PERFORMANCE OF WIND TURBINE

EFFECT OF SURFACE ROUGHNESS ON PERFORMANCE OF WIND TURBINE Chapter-5 EFFECT OF SURFACE ROUGHNESS ON PERFORMANCE OF WIND TURBINE 5.1 Introduction The development of modern airfoil, for their use in wind turbines was initiated in the year 1980. The requirements

More information

Large Area Propellers

Large Area Propellers Second International Symposium on Marine Propulsors smp 11, Hamburg, Germany, June 2011 Large Area Propellers Daniel Knutsson 1, Lars Larsson 2 1 PhD student, Department of Shipping and Marine Technology,

More information

Nobert Bulten Petra Stoltenkamp Wärtsilä Propulsion Technology

Nobert Bulten Petra Stoltenkamp Wärtsilä Propulsion Technology DYNAMIC POSITIONING CONFERENCE October 11-12, 2016 THRUSTERS Improved DP-Capability with Tilted Thrusters and Smart Controls Algorithims Nobert Bulten Petra Stoltenkamp Wärtsilä Propulsion Technology Improved

More information

STUDYING THE EFFECT OF PITCH RATIO ON SHEET CAVITATION IN MARINE PROPELLERS

STUDYING THE EFFECT OF PITCH RATIO ON SHEET CAVITATION IN MARINE PROPELLERS Journal of Engineering Science and Technology 8 th EURECA 2017 Special Issue August (2018) 28-38 School of Engineering, Taylor s University STUDYING THE EFFECT OF PITCH RATIO ON SHEET CAVITATION IN MARINE

More information

About us. In this brochure we are pleased to present one of our latest innovations the Becker Mewis Duct.

About us. In this brochure we are pleased to present one of our latest innovations the Becker Mewis Duct. becker mewis duct About us Established in 1946 and located in Hamburg, Germany, Becker Marine Systems is a leading supplier of high-performance rudders and manoeuvring systems for all types and sizes of

More information

Underwater Radiated Noise Measurements on a Chemical Tanker Measurements at Sea- Trials Compared to Model-Scale Tests and CFD

Underwater Radiated Noise Measurements on a Chemical Tanker Measurements at Sea- Trials Compared to Model-Scale Tests and CFD Underwater Radiated Noise Measurements on a Chemical Tanker Measurements at Sea- Trials Compared to Model-Scale Tests and CFD Jan Hallander, Da-Qing Li and Torbjörn Johansson SSPA Sweden AB Gothenburg,

More information

A Breakthrough in Waterjet Propulsion Systems

A Breakthrough in Waterjet Propulsion Systems Doha International Maritime Defence Exhibition and Conference DIMDEX 2008, Qatar, March 2008 A Breakthrough in Waterjet Propulsion Systems Dr Norbert Bulten Wärtsilä Propulsion Netherlands *, Drunen, The

More information

Numerical investigation of open water performance of hybrid CRP podded propulsion system

Numerical investigation of open water performance of hybrid CRP podded propulsion system Numerical investigation of open water performance of hybrid CRP podded propulsion system Dongya He *, Decheng Wan State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil

More information

Gas exchange and fuel-air mixing simulations in a turbocharged gasoline engine with high compression ratio and VVA system

Gas exchange and fuel-air mixing simulations in a turbocharged gasoline engine with high compression ratio and VVA system Third Two-Day Meeting on Internal Combustion Engine Simulations Using the OpenFOAM technology, Milan 22 nd -23 rd February 2018. Gas exchange and fuel-air mixing simulations in a turbocharged gasoline

More information

Surface Pressure Measurements on the KCS Model (SRI M.S.No.631) in the SRI 400m Towing Tank

Surface Pressure Measurements on the KCS Model (SRI M.S.No.631) in the SRI 400m Towing Tank Surface Pressure Measurements on the KCS Model (SRI M.S.No.631) in the SRI 400m Towing Tank 1. Introduction The present report describes the surface pressure measurements around a ship model of the 3,600TEU

More information

APPLICATION OF STAR-CCM+ TO TURBOCHARGER MODELING AT BORGWARNER TURBO SYSTEMS

APPLICATION OF STAR-CCM+ TO TURBOCHARGER MODELING AT BORGWARNER TURBO SYSTEMS APPLICATION OF STAR-CCM+ TO TURBOCHARGER MODELING AT BORGWARNER TURBO SYSTEMS BorgWarner: David Grabowska 9th November 2010 CD-adapco: Dean Palfreyman Bob Reynolds Introduction This presentation will focus

More information

Reliable, Silent, Efficient. Voith Linear Jet

Reliable, Silent, Efficient. Voith Linear Jet Reliable, Silent, Efficient. Voith Linear Jet 1 A New Propulsion Standard. The Voith Linear Jet (VLJ) combines the best elements of two existing technologies conventional screw propellers and water jets.

More information

(1) Keywords: CFD, helicopter fuselage, main rotor, disc actuator

(1) Keywords: CFD, helicopter fuselage, main rotor, disc actuator SIMULATION OF FLOW AROUND FUSELAGE OF HELICOPTER USING ACTUATOR DISC THEORY A.S. Batrakov *, A.N. Kusyumov *, G. Barakos ** * Kazan National Research Technical University n.a. A.N.Tupolev, ** School of

More information

Abstract. 1 Introduction

Abstract. 1 Introduction Effect of stern tunnel height on propulsive efficiency of inland vessels J. Kulczyk, P. Zaj^c Institute ofmachine Construction and Operation, Technical University of Wroclaw Wybrzeze Wyspianskiego 27,

More information

Comparative study of the flow within water mist and sprinkler fire protection systems by means of CFD

Comparative study of the flow within water mist and sprinkler fire protection systems by means of CFD Comparative study of the flow within water mist and sprinkler fire protection systems by means of CFD A. Cablé, K. Chetehouna, and N. Gascoin INSA Centre Val de Loire, PRISME Laboratory, 18020 Bourges,

More information

Prediction of Engine Warm-up and Fuel Economy utilizing GT s Customized FE Cylinder Structure Objects

Prediction of Engine Warm-up and Fuel Economy utilizing GT s Customized FE Cylinder Structure Objects Prediction of Engine Warm-up and Fuel Economy utilizing GT s Uliana Bryakina Gerald Seider Frankfurt, October 16, 2016 European GT Conference 2016 InDesA GmbH Carl-Zeiss-Ring 19a D-85737 Ismaning Phone

More information

Contents 1 General on Ship Design 2 Selection of Main Dimensions and Calculation of Basic Ship Design Values

Contents 1 General on Ship Design 2 Selection of Main Dimensions and Calculation of Basic Ship Design Values Contents 1 General on Ship Design... 1 1.1 Conventional and Advanced Marine Vehicles... 1 1.2 Maritime Transport Innovative Design Concepts, Energy Efficiency and Environmental Impact... 4 1.3 Introduction

More information

MDT Alpha Aft ship & Propeller

MDT Alpha Aft ship & Propeller MDT Alpha Aft ship & Propeller [Optional] subtitle, referent and location, date George Drossos Head of Marine New Sales & Promotion MAN Diesel & Turbo Hellas Ltd < 1 > Agenda 1 Propeller optimization and

More information

LES of wind turbine wakes

LES of wind turbine wakes LES of wind turbine wakes... and an SD7003 Airfoil! Hamid Sarlak Fluid Mechanics Section, Department of Wind Energy, Technical University of Denmark, hsar@dtu.dk Wake Conference - 2017 Uppsala University

More information

Design and Hydrodynamic Model Test of Mini Submarine Propeller with High Efficiency and Low Cavitation

Design and Hydrodynamic Model Test of Mini Submarine Propeller with High Efficiency and Low Cavitation EPI International ournal of Engineering pissn 2615-5109 Volume 1, Number 2, August 2018, pp. 59-64 eissn 2621-0541 DOI: 10.25042/epi-ije.082018.09 Design and Hydrodynamic Model Test of Mini Submarine Propeller

More information

Combustion PVM-MF. The PVM-MF model has been enhanced particularly for dualfuel

Combustion PVM-MF. The PVM-MF model has been enhanced particularly for dualfuel Contents Extensive new capabilities available in STAR-CD/es-ice v4.20 Combustion Models see Marc Zellat presentation Spray Models LES New Physics Developments in v4.22 Combustion Models PVM-MF Crank-angle

More information

Indra Nath Bose Head Vessel Performance Management, The Great Eastern Shipping Co. Ltd.,

Indra Nath Bose Head Vessel Performance Management, The Great Eastern Shipping Co. Ltd., Indra Nath Bose Head Vessel Performance Management, The Great Eastern Shipping Co. Ltd., Tanker Operator Conference Making Money in a Tough Market Mumbai 5 th February 2015 Technical Measures - retrofits;

More information

Improving the Propulsion Efficiency by means of Contracted and Loaded Tip (CLT) Propellers

Improving the Propulsion Efficiency by means of Contracted and Loaded Tip (CLT) Propellers The Society of Naval Architects & Marine Engineers Improving the Propulsion Efficiency by means of Contracted and Loaded Tip (CLT) Propellers Dott. Ing. Giulio Gennaro SINM srl, Genoa, Italy, sinm@sinm.it

More information

NOISE & VIBRATIONS. Frans Hendrik Lafeber

NOISE & VIBRATIONS. Frans Hendrik Lafeber NOISE & VIBRATIONS Frans Hendrik Lafeber NOISE & VIBRATIONS, URN Noise & vibrations are important factors when designing a ship: Structural Workability Regulations (hearing loss) Comfort! Underwater radiated

More information

Modeling of Battery Systems and Installations for Automotive Applications

Modeling of Battery Systems and Installations for Automotive Applications Modeling of Battery Systems and Installations for Automotive Applications Richard Johns, Automotive Director, CD-adapco Robert Spotnitz, President, Battery Design Predicted Growth in HEV/EV Vehicles Source:

More information

LNGreen. GREEN4SEA Forum. LNG carrier of tomorrow - Joint development project. 06 April George Dimopoulos, PhD DNV GL R&D and Advisory, Greece

LNGreen. GREEN4SEA Forum. LNG carrier of tomorrow - Joint development project. 06 April George Dimopoulos, PhD DNV GL R&D and Advisory, Greece LNGreen LNG carrier of tomorrow - Joint development project GREEN4SEA Forum George Dimopoulos, PhD DNV GL R&D and Advisory, Greece 1 SAFER, SMARTER, GREENER Introduction LNG vessels: forefront of innovation,

More information

Effect of Stator Shape on the Performance of Torque Converter

Effect of Stator Shape on the Performance of Torque Converter 16 th International Conference on AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 May 26-28, 2015, E-Mail: asat@mtc.edu.eg Military Technical College, Kobry Elkobbah, Cairo, Egypt Tel : +(202) 24025292

More information

Hydraulic Flywheel Accumulator for Mobile Energy Storage

Hydraulic Flywheel Accumulator for Mobile Energy Storage Hydraulic Flywheel Accumulator for Mobile Energy Storage Paul Cronk University of Minnesota October 14 th, 2015 I. Overview Outline I. Background on Mobile Energy Storage II. Hydraulic Flywheel Accumulator

More information

DNV GL. Global maritime advisory group uses Simcenter STAR-CCM+ to increase hull efficiency by 36 percent without sacrificing capacity

DNV GL. Global maritime advisory group uses Simcenter STAR-CCM+ to increase hull efficiency by 36 percent without sacrificing capacity Marine Product Simcenter Business challenges Optimize hydrodynamic hull performance for new fleet of container vessels Achieve a 30 percent improvement in energy efficiency Keys to success Use Simcenter

More information

An Exploratory Study on the Working Principles of Energy Saving Devices (ESDs)

An Exploratory Study on the Working Principles of Energy Saving Devices (ESDs) Symposium on Green Ship Technology (Greenship'2011) Wuxi, China, October 2011 An Exploratory Study on the Working Principles of Energy Saving Devices (ESDs) Jie Dang 1, Hao Chen 2, Guoxiang Dong 3, Auke

More information

Lowest Total Cost of Ownership Increased Efficiency Larger Fuel Savings Higher Reliability

Lowest Total Cost of Ownership Increased Efficiency Larger Fuel Savings Higher Reliability This MAN Is Alpha a Headline This High-efficient is a subheadline Fixed Pitch Propellers Lowest Total Cost of Ownership Increased Efficiency Larger Fuel Savings Higher Reliability A wide range of different

More information

Engineering Success by Application of STAR-CCM+ for Modern Gas Turbine Design

Engineering Success by Application of STAR-CCM+ for Modern Gas Turbine Design STAR Japanese Conference 2013 December 3, Yokohama, Japan Engineering Success by Application of STAR-CCM+ for Modern Gas Turbine Design Norbert Moritz, Karsten Kusterer, René Braun, Anis Haj Ayed B&B-AGEMA

More information

Feasibility of Electric Propulsion for Semi-submersible Heavy Lift Vessels

Feasibility of Electric Propulsion for Semi-submersible Heavy Lift Vessels Feasibility of Electric Propulsion for Semi-submersible Heavy Lift Vessels K Kokkila, ABB Marine & Cranes, Finland SUMMARY Some of the semi-submersible heavy lift vessels have special requirements that

More information

Hydrodynamic Optimization of Ships

Hydrodynamic Optimization of Ships Hydrodynamic Optimization of Ships J. Friesch Hamburg Ship Model Basin 1 Hydrodynamic Optimization What can be gained? 1. Introduction 2. Optimal main dimensions 3. Optimised hull form 4. Hull surface

More information

CO2 Reduction: Operational Challenges

CO2 Reduction: Operational Challenges Sustainable Shipping San Francisco 1 October 2009 CO2 Reduction: Operational Challenges Bill Lind Director, Technology & Business Development Ships ABS 1 Current Boundary Conditions Public demands (aircraft,

More information

International Journal of Scientific & Engineering Research, Volume 5, Issue 7, July-2014 ISSN

International Journal of Scientific & Engineering Research, Volume 5, Issue 7, July-2014 ISSN ISSN 9-5518 970 College of Engineering Trivandrum Department of Mechanical Engineering arundanam@gmail.com, arjunjk91@gmail.com Abstract This paper investigates the performance of a shock tube with air

More information

Becker Marine Systems

Becker Marine Systems Marine Becker Marine Systems Product Simcenter Leading developer of innovative devices for marine industry uses STAR-CCM+ to develop energy-saving Becker Mewis Duct Business challenges Develop energy-saving

More information

Fuel efficient tanker design. Karsten Hochkirch DNV GL SE Germany

Fuel efficient tanker design. Karsten Hochkirch DNV GL SE Germany Fuel efficient tanker design Karsten Hochkirch DNV GL SE Germany ECO Lines ECO Retrofit ECO Assistant 1,000+ vessels optimized: Savings per day overall CO 2 [t] 7,900 7.7 Mio Fuel [t] 2,600 2.5 Mio Costs*

More information

COMPARISON OF PROPELLER TYPE B-SERIES AND AU-OUTLINE GAWN SERIES FOR IMPROVING ON SUBMARINE PROPULSION PERFORMANCE USING CFD

COMPARISON OF PROPELLER TYPE B-SERIES AND AU-OUTLINE GAWN SERIES FOR IMPROVING ON SUBMARINE PROPULSION PERFORMANCE USING CFD International Journal of Mechanical Engineering and Technology (IJMET) Volume 10, Issue 03, March 2019, pp. 534-538. Article ID: IJMET_10_03_054 Available online at http://www.iaeme.com/ijmet/issues.asp?jtype=ijmet&vtype=10&itype=3

More information

Seeing Noise: Acoustic Optimization of Exhaust Systems Through Simulation

Seeing Noise: Acoustic Optimization of Exhaust Systems Through Simulation Seeing Noise: Acoustic Optimization of Exhaust Systems Through Simulation A whitepaper discussing the challenges acoustic engineers face and the use of new approaches in simulation technology to find noise

More information

Merchant Ships Determined From. Model Tests and Full Scale Trials. Stuart B. Cohen Principal Investigator. for. Hydronautics, Inc. Project Coordinator

Merchant Ships Determined From. Model Tests and Full Scale Trials. Stuart B. Cohen Principal Investigator. for. Hydronautics, Inc. Project Coordinator ci~7 / '~-~ '- April 1981 346780 Correlation Allowances for Two Large, Full Form Merchant Ships Determined From Model Tests and Full Scale Trials by Stuart B. Cohen Principal Investigator for Hydronautics,

More information

Design and Experimental Study on a New Concept of Preswirl Stator as an Efficient Energy-Saving Device for Slow Speed Full Body Ship

Design and Experimental Study on a New Concept of Preswirl Stator as an Efficient Energy-Saving Device for Slow Speed Full Body Ship 2004 SNAME Annual Meeting Design and Experimental Study on a New Concept of Preswirl Stator as an Efficient Energy-Saving Device for Slow Speed Full Body Ship M. C. Kim(V), Pusan National University, H.

More information

MINUTES OF MEETING SIMMAN 2008

MINUTES OF MEETING SIMMAN 2008 MINUTES OF MEETING SIMMAN 2008 SIMMMAN 2008 Meeting no. 6: Status June 2007 (executive committee only) Participants Fred Stern (IIHR), Kristian (FORCE) C.C. to Workshop on Verification and Validation of

More information

Measurement and Analysis of Underhood Ventilation Air Flow and Temperatures for an Off- Road Machine

Measurement and Analysis of Underhood Ventilation Air Flow and Temperatures for an Off- Road Machine Measurement and Analysis of Underhood Ventilation Air Flow and Temperatures for an Off- Road Machine Tanju Sofu and Fon-Chieh Chang, Argonne National Laboratory Ron Dupree and Srinivas Malipeddi, Caterpillar,

More information

A Development of a Propeller with Backward Tip Raked Fin

A Development of a Propeller with Backward Tip Raked Fin Third International Symposium on Marine Propulsion smp 13, Tasmania, Australia, May 2013 A Development of a Propeller with Backward Tip Raked Fin Yasuhiko Inukai Japan Marine United Cooperation, Tokyo,

More information

Technical Information

Technical Information Subject Minimum propulsion power requirements to maintain the manoeuvrability of ships in adverse conditions (EEDI related requirements) To whom it may concern Technical Information No. TEC-1039 Date 31

More information

Heat Transfer Modeling using ANSYS FLUENT

Heat Transfer Modeling using ANSYS FLUENT Lecture 7 Heat Exchangers 14.5 Release Heat Transfer Modeling using ANSYS FLUENT 2013 ANSYS, Inc. March 28, 2013 1 Release 14.5 Outline Introduction Simulation of Heat Exchangers Heat Exchanger Models

More information

Powertrain Clean Power

Powertrain Clean Power Powertrain Clean Power Large Eddy Simulations for atomization and spray, Advanced System Engineering N. Lamarque, M. Khan, J. Chesnel*, N. Lu** * Altran Sud ouest ** also CORIA, Rouen www.continental-corporation.com

More information

The use of Simulation in Electric Machine Design Stefan Holst, CD-adapco

The use of Simulation in Electric Machine Design Stefan Holst, CD-adapco The use of Simulation in Electric Machine Design Stefan Holst, CD-adapco Motivation How often can a machine be started within an hour In Hybrids, what effect has the adjacent combustion drive train Space

More information

Sustainable Development IMO s Contribution Beyond Rio+20

Sustainable Development IMO s Contribution Beyond Rio+20 2013/SOM1/SCE-COW/DIA/003 Sustainable Development IMO s Contribution Beyond Rio+20 Submitted by: IMO Dialogue on Mainstreaming Ocean-Related Issues in APEC Jakarta, Indonesia 4 February 2013 Eivind S.

More information

Contra-Rotating Propellers Combination of DP Capability, Fuel Economy and Environment

Contra-Rotating Propellers Combination of DP Capability, Fuel Economy and Environment Gabriel Delgado-Saldivar The Use of DP-Assisted FPSOs for Offshore Well Testing Services DYNAMIC POSITIONING CONFERENCE October 17-18, 2006 Thrusters Contra-Rotating Propellers Combination of DP Capability,

More information

COMPUTER-BASED DESIGN TOOL FOR A FUEL EFFICIENT - LOW EMISSIONS MARINE PROPULSION PLANT

COMPUTER-BASED DESIGN TOOL FOR A FUEL EFFICIENT - LOW EMISSIONS MARINE PROPULSION PLANT COMPUTER-BASED DESIGN TOOL FOR A FUEL EFFICIENT - LOW EMISSIONS MARINE PROPULSION PLANT Marco Altosole, Michela Borlenghi, Marco Capasso, Massimo Figari. Naval Architecture & Marine Engineering Department

More information

The Challenge for Today s Shipbuilding Companies

The Challenge for Today s Shipbuilding Companies Digital Ship Japan 2014 The Challenge for Today s Shipbuilding Companies Sharing Japanese Shipbuilding, Shipping, and Maritime Technologies with the World Sep. 2 2014 Fumihiko Shibata, Deputy General Manager

More information

Vaasa Conference April 2016

Vaasa Conference April 2016 Vaasa Conference April 2016 HYBRIDIZATION OF SHIPS INGVE SØRFONN MARINE SOLUTION E & A 1 Wärtsilä The overall challenge Shipping burns approx. 335 million ton of fuel per year, while transporting 85% of

More information

Generation of an Advanced Helicopter Experimental Aerodynamic Database for CFD Code Validation (GOAHEAD)

Generation of an Advanced Helicopter Experimental Aerodynamic Database for CFD Code Validation (GOAHEAD) Generation of an Advanced Helicopter Experimental Aerodynamic Database for CFD Code Validation (GOAHEAD) T. Schwarz, K. Pahlke DLR Braunschweig, Germany Folie 1 Outline Motivation The GOAHEAD project Wind

More information

STAR-CCM+ and SPEED for electric machines cooling analysis. Stefan Holst

STAR-CCM+ and SPEED for electric machines cooling analysis. Stefan Holst STAR-CCM+ and SPEED for electric machines cooling analysis Stefan Holst Overview SPEED s own thermal capability consists of simplified circuit models Good for a first shot Circuit model allows for quick

More information

A Parametric CFD Study of a Generic Pickup Truck and Rear Box Modifications

A Parametric CFD Study of a Generic Pickup Truck and Rear Box Modifications Abstract A Parametric CFD Study of a Generic Pickup Truck and Rear Box Modifications Wael Mokhtar; Md Maruf Hossain, and Samira Ishrat Jahan, School of Engineering, Grand valley State University, Grand

More information

Highest Propeller Performance Reduced Hydroacoustics Increased Flexibility Larger Fuel Savings Lowest Total Cost of Ownership

Highest Propeller Performance Reduced Hydroacoustics Increased Flexibility Larger Fuel Savings Lowest Total Cost of Ownership This MAN Is Alpha a Headline This High-performance is a subheadline Naval Propellers Highest Propeller Performance Reduced Hydroacoustics Increased Flexibility Larger Fuel Savings Lowest Total Cost of

More information

A Design Concept of Composite Marine Propeller for Long Stroke Slow Speed Main Engine

A Design Concept of Composite Marine Propeller for Long Stroke Slow Speed Main Engine Fifth International Symposium on Marine Propulsors smp 17, Espoo, Finland, June 2017 A Design Concept of Composite Marine Propeller for Long Stroke Slow Speed Main Engine Hyoungsuk Lee 1, Jaewook Hur 1,

More information

CFD Analysis of Oil Discharge Rate in Rotary Compressor

CFD Analysis of Oil Discharge Rate in Rotary Compressor Purdue University Purdue e-pubs International Compressor Engineering Conference School of Mechanical Engineering CFD Analysis of Oil Discharge Rate in Rotary Compressor Liying Deng haitunsai@.com Shebing

More information

EFFECT OF SPOILER DESIGN ON HATCHBACK CAR

EFFECT OF SPOILER DESIGN ON HATCHBACK CAR EFFECT OF SPOILER DESIGN ON HATCHBACK CAR Ashpak Kazi 1 *, Pradyumna Acharya 2, Akhil Patil 3 and Aniket Noraje 4 1,2,3,4 Department of Automotive Engineering, School of Mechanical Engineering, VIT University,

More information

Virtual Testing for Automotive Components and its Integration into the OEM s Product Creation Process. Dr. Gerald Seider Dr.

Virtual Testing for Automotive Components and its Integration into the OEM s Product Creation Process. Dr. Gerald Seider Dr. Virtual Testing for Automotive Components and its Integration into the OEM s Product Creation Process Dr. Gerald Seider Dr. Fabiano Bet Orlando, 18 March, 2013 Company Profile Consulting, Engineering Services

More information

Propulsion of VLCC Introduction

Propulsion of VLCC Introduction Propulsion of VLCC Content Introduction...5 EEDI and Major Ship and Main Engine Parameters...6 Energy efficiency design index (EEDI)...6 Minimum propulsion power...6 Major propeller and engine parameters...7,

More information

ZEUS and NOAH Projects of NMRI

ZEUS and NOAH Projects of NMRI Third International Symposium on Marine Propulsors smp 13, Tasmania, Australia, May 013 ZEUS and NOAH Projects of NMRI Noriyuki Sasaki National Maritime Research Institute (NMRI), Mitaka, Tokyo, Japan

More information

Poulsen Hybrid Monorotor

Poulsen Hybrid Monorotor Poulsen Hybrid Monorotor The Poulsen Hybrid Monorotor A Novel Approach to Flettner Marine Propulsion January 2012 Background The Magnus effect defines thrust developed by spinning a cylinder in an air

More information

By Edmund Hughes, Technical Officer, Marine Environment Division, IMO

By Edmund Hughes, Technical Officer, Marine Environment Division, IMO A new chapter for MARPOL Annex VI requirements for technical and operational measures to improve the energy efficiency of international shipping By Edmund Hughes, Technical Officer, Marine Environment

More information

Improved Efficiency and Reduced CO 2

Improved Efficiency and Reduced CO 2 Improved Efficiency and Reduced CO 2 Content Introduction...5 Major Propeller and Main Engine Parameters...5 Propeller...6 Main engine...6 Ship with reduced design ship speed...6 Case Study 1...6 75,000

More information

Scroll Compressor Oil Pump Analysis

Scroll Compressor Oil Pump Analysis IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Scroll Compressor Oil Pump Analysis To cite this article: S Branch 2015 IOP Conf. Ser.: Mater. Sci. Eng. 90 012033 View the article

More information

Vehicle Aerodynamics Subscription Development of Numerical Simulation Method of Flow Around Automobile Using Meshfree Method

Vehicle Aerodynamics Subscription Development of Numerical Simulation Method of Flow Around Automobile Using Meshfree Method Vehicle Aerodynamics Subscription 2005-01-0544 Development of Numerical Simulation Method of Flow Around Automobile Using Meshfree Method 2005-01-0545 A Downforce Optimization Study for a Racing Car Shape

More information

Propellers for EEDI Compliant VLCC s

Propellers for EEDI Compliant VLCC s Introduction Propellers for EEDI Compliant VLCC s Jack Devanney Center for Tankship Excellence, USA, djw1@c4tx.org CTX has undertaken a study of the impact of Energy Efficienct Design Index (EEDI) on VLCC

More information

The use of CFD at hepia The Swiss Team Moto2 fastest of the World Championship

The use of CFD at hepia The Swiss Team Moto2 fastest of the World Championship The use of CFD at hepia The Swiss Team Moto2 fastest of the World Championship Patrick Haas, Prof. HES Mechanical Engineering www.cmefe.ch MOTORSPORTS AT HEPIA Egli Motorradtechnik (1985) Bachelor thesis

More information

EFFECTS OF LOCAL AND GENERAL EXHAUST VENTILATION ON CONTROL OF CONTAMINANTS

EFFECTS OF LOCAL AND GENERAL EXHAUST VENTILATION ON CONTROL OF CONTAMINANTS Ventilation 1 EFFECTS OF LOCAL AND GENERAL EXHAUST VENTILATION ON CONTROL OF CONTAMINANTS A. Kelsey, R. Batt Health and Safety Laboratory, Buxton, UK British Crown copyright (1) Abstract Many industrial

More information

Enhanced Heat Transfer Surface Development for Exterior Tube Surfaces

Enhanced Heat Transfer Surface Development for Exterior Tube Surfaces 511 A publication of CHEMICAL ENGINEERING TRANSACTIONS VOL. 32, 2013 Chief Editors: Sauro Pierucci, Jiří J. Klemeš Copyright 2013, AIDIC Servizi S.r.l., ISBN 978-88-95608-23-5; ISSN 1974-9791 The Italian

More information

Shipping and Environmental Challenges MARINTEK 1

Shipping and Environmental Challenges MARINTEK 1 Shipping and Environmental Challenges 1 Development of World Energy Consumption 18000 16000 14000 12000 10000 8000 6000 4000 2000 0 World energy consumption 1975-2025 in MTOE 1970 1975 1980 1985 1990 1995

More information

Improving Propulsion Efficiency with SISTEMAR CLT Propellers

Improving Propulsion Efficiency with SISTEMAR CLT Propellers Improving Propulsion Efficiency with SISTEMAR CLT Propellers Dott. Ing. Juan-Gonzalez Adalìd, SISTEMAR Dott. Ing. Giulio Gennaro, SINM SMM 2014, Hamburg PROPULSION EFFICIENCY Stringent requirements on

More information

Propulsion of 30,000 dwt. Handysize Bulk Carrier

Propulsion of 30,000 dwt. Handysize Bulk Carrier Propulsion of 3, dwt Handysize Bulk Carrier Content Introduction...5 EEDI and Major Ship and Main Engine Parameters...6 Energy Efficiency Design Index (EEDI)...6 Major propeller and engine parameters...7

More information

Onboard DC Grid. Jan Fredrik DP Conference 2011; Houston. for enhanced DP operation in ships

Onboard DC Grid. Jan Fredrik DP Conference 2011; Houston. for enhanced DP operation in ships Onboard Grid Jan Fredrik Hansen @ DP Conference 2011; Houston for enhanced DP operation in ships Traditional System Onboard Grid Up to 20% fuel saving potential Quicker and more dynamic system performance

More information

Propulsion of 46,000-50,000 dwt. Handymax Tanker

Propulsion of 46,000-50,000 dwt. Handymax Tanker Propulsion of 46,-, dwt Handymax Tanker Content Introduction... EEDI and Major Ship and Main Engine Parameters...6 Energy Efficiency Design Index (EEDI)...6 Major propeller and engine parameters...7 46,-,

More information

Incorporation of Flamelet Generated Manifold Combustion Closure to OpenFOAM and Lib-ICE

Incorporation of Flamelet Generated Manifold Combustion Closure to OpenFOAM and Lib-ICE Multiphase and Reactive Flows Group 3 rd Two-day Meeting on IC Engine Simulations Using OpenFOAM Technology 22-23 Feb 2018 - Milano Incorporation of Flamelet Generated Manifold Combustion Closure to OpenFOAM

More information

RESOLUTION MEPC.251(66) Adopted on 4 April 2014

RESOLUTION MEPC.251(66) Adopted on 4 April 2014 RESOLUTION MEPC.251(66) Adopted on 4 April 2014 AMENDMENTS TO THE ANNEX OF THE PROTOCOL OF 1997 TO AMEND THE INTERNATIONAL CONVENTION FOR THE PREVENTION OF POLLUTION FROM SHIPS, 1973, AS MODIFIED BY THE

More information

characteristics, including the ability to turn through 180 degrees for an increase in backing thrust.

characteristics, including the ability to turn through 180 degrees for an increase in backing thrust. 6 Turning CRP Azipod gives a boost to point marine propulsion efficiency Tomi Veikonheimo, Matti Turtiainen Almost as old as the invention of the screw propeller itself, the concept of contra-rotating

More information

Integrated 1D-MultiD Fluid Dynamic Models for the Simulation of I.C.E. Intake and Exhaust Systems

Integrated 1D-MultiD Fluid Dynamic Models for the Simulation of I.C.E. Intake and Exhaust Systems Integrated -MultiD Fluid Dynamic Models for the Simulation of I.C.E. Intake and Exhaust Systems G. Montenegro, A. Onorati, F. Piscaglia, G. D Errico Politecnico di Milano, Dipartimento di Energetica, Italy

More information

New Alpha CP Propellers A high-efficient VBS Mk 5 design is revealed at SMM

New Alpha CP Propellers A high-efficient VBS Mk 5 design is revealed at SMM New Alpha CP Propellers A high-efficient VBS Mk 5 design is revealed at SMM Copenhagen, 18/0 MAN Diesel & Turbo presents a new high-efficient VBS propeller generation on their stand in Hamburg. A VBS Mk

More information

Analysis of Aerodynamic Performance of Tesla Model S by CFD

Analysis of Aerodynamic Performance of Tesla Model S by CFD 3rd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 2017) Analysis of Aerodynamic Performance of Tesla Model S by CFD Qi-Liang WANG1, Zheng WU2, Xian-Liang

More information