flow simulation with acusolve to improve railway vehicles
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2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Flow Simulation With AcuSolve to Improve Railway Vehicles
SATO, TetsuroNIPPON SHARYO, [email protected]
2011 European HyperWorks Technology Conference
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Nagoya
OsakaTokyoNagoya
Toyokawa Plant
Tokyo
Head office : Nagoya, JAPAN
Establishment : September 1896
Paid-in capital : 11,810 million yen
Sales : 94,842 million yen ( 896M Euro : FY 2010 )
Employees : 1,969 ( Apr. 2010 )
Production capacity :
600 Commuter cars / year
Corporate Profile
Fig. 1
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Type 3000for Yokohama City Subway
Series 9000for Keio
Type 3000for Keisei
Type 220 DCfor JR kyushu
Series 3300for Nagoya Railroad
Series 08for Tokyo Metro
Series 313for JR Central
Series 8000 Tilting SystemFor JR Shikoku
Type 7000for Nagoya City Subway
Type 50000 Articulated Trainfor Odakyu
Series 2000 Airport Expressfor Nagoya Railroad
Series 281DC Tilting Systemfor JR Hokkaido
“LINIMO” HSST-100for Aichi Rapid Transit
Series 383 Tilting Systemfor JR Central
YURIKAMOME Series 7000New Transit System
Series 215for JR East
Series 187DC Tilting Systemfor JR West
Latest domestic trains
Fig. 2
AE “Sky access”for Keisei
Series 683for JR West
Series 07for Tokyo Metro
Type 3000for Odakyu
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
California
Taiwan
Thailand
Indonesia
Indiana
MarylandLos Angeles
Venezuela
Argentina
Singapore
U.S.A.
Philippines
Taiwan
Illinois
Trains in the world
Fig. 3
Brazil
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
3,202 Shinkansen cars for revenue service
Shinkansen (bullet train) Series 0
Series 100
Series 300
Series 200
Series E2
Series 700
Series N700
Type 923
1964
1986
1992
19821997
2007
1999
2000
Series 500
1997
210 km/h
230 km/h
270 km/h
285km/h
300 km/h Fig. 4
300 km/h
2004Series 700T
220 km/h 275
km/h
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
CFD for railway vehicles
ProductivityFSW joining process
AmenityVibration excitationTunnel entry noise
AeroacousticsHVAC
SafetyCross-wind load estimation
Passing-trains aerodynamics
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
1. Cross wind load estimation
Fig. 5 Time-average wind velocity
Plan A Plan B
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
2. Trains passing by each other
A,B
Main interest : Intermediate car
Criteria : Unsteady load caused by the opposite train
Wind velocity at the ground level. Fig. 6
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Main interest : Leading car design, ride comfort
Criteria : Aerodynamic forces acting on every car, Maximum/minimum of local pressure and wind velocity
Parameters : Leading car design, train velocities
3. Full transient passing-by
Fig. 7
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
4. Mitigating aerodynamic excitation
Fig. 8 Unsteady flow over the trailing car
Main interest : Ride comfort of the trailing car
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Breakdown of vortices
Fig. 9 Breakdown of trailing vortices
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
5. Train shape optimization to minimize the tunnel entry noise
Fig. 10 Tunnel entry pressure wave
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Tunnel entry flow simulation
Fig. 11 Moving boundary problem
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Tunnel entry experiment
Fig. 12 Tunnel entry experiment
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
3D shape optimizationusing the “specific response”
Fig. 13 Tunnel entrance
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Specific response of the tunnel
Fig. 14 Spatially non-uniform response function
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
3D shape optimization to minimize the tunnel entry noise
Fig. 15 Shape optimization
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
3D shape optimization to minimize the tunnel entry noise
Fig. 16 Shape optimization
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
6. Reduction of the noise from the door frame
Fig. 17 Door frame
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
FE model
Fig. 18 Aeroacoustics; flow model
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Horizontal cross section
Fig. 19 Aeroacoustics; flow field
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Intensity of dipole noise source
Fig. 20 Pseudo-sound
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Acoustic analysis
Fig. 21 Aeroacoustics; Near sound field
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Shape improvement
Fig. 22 Shape improvement
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
7. Heating,Ventilating andAir Conditioning system
Fig. 23 Unsteady cabin flow simulation
Objective : Inlet and outlet design, suitable for both summer and winter.
Forced convection, Free convection, Radiation, Unsteady flow with turbulence model, Heat transfer, Heat load, Solar radiation
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
HVAC system
Fig. 24 Cooling; Average flow field
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
HVAC system
Fig. 25 Heating; Average Flow Field
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
8. Friction Stir Welding
Fig. 26 Self-Reacting Pin Tool
Objective : Optimization of the tool, welding parameters
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Butt welding
Fig. 27 F.E. mesh & boundary conditions
“Outflow” B.C.
“Inflow” B.C.
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Temperature
Fig. 28 Result; U=2500mm/min, 2000rpm
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Particle Tracing
Fig. 29 Result; U=2500mm/min, 2000rpm
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Conclusions
Numerical simulation conducted by acuSolve is useful in getting the ideas for making decision.
It helps us improve our railway vehicles.
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
Thank youDanke
http://www.n-sharyo.co.jp/
mail: [email protected]
2011 European HyperWorks Technology Conference
8th November, 2011Bonn, Germany
References Predicting the Wind Noise from the Pantograph Cover of a Train,
Intl. J. for Numerical Methods in Fluids, Vol.24, Issue 12 (1997) Solution of Train Tunnel Entry Flow Using Parallel Computing,
Computational Mechanics,Vol.23, No.2(1999) A Numerical Evaluation of Aerodynamic Noise from a Shallow Cavity on a
High-Speed Train Surface, Proc. JSME annual meeting (2000-1) Numerical Analysis of Aerodynamic Noise Radiation from a High-Speed Train
Surface, J. of Sound and Vibration, Vol.23 No.2(2001) Prediction of the Compression Pressure Wave Generated by a High-Speed
Train Entering a Tunnel, Intl. J. of CFD, Vol.19 No.1(2005) Designing of FSW Parameters with Finite Element Flow Simulation, Proc. 6th
Intl. FSW Symp.(2006) Three-Dimensional Shape Optimization for Reducing the Compression
Pressure Wave Generated by a High-Speed Train Tunnel Entry, Proc. 20th
Computational Mechanics Conference (2007) Three-Dimensional Shape Design of a High-Speed Train for Reducing the
Compression Pressure Wave Generated by a Tunnel Entry, Proc. 16th JSME Translog conference (2007)
Numerical Simulation of Friction Stir Welding of Lap Joint, Proc. The National Meeting of JWS, No. 83 (2008)
Tool Development by Numerical Simulation, Proc. 8th Intl. FSW Symp.(2010) Finite Element Analysis of Friction Stir Welding Affected by Heat Conduction
through the Welding Jig, Proc. 11th Intl. Aluminium conf. INALCO (2010)