This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Finite-Difference Simulation of 3D Vortical Flows Past Road Vehicles
Annotation ability available
Sector:
Language:
English
Abstract
A newly developed finite-difference solution method TUMMAC-VII is applied to the flow about a road vehicle. It is a time-marching solution method for the Navier-Stokes equation in the framework of a fixed rectangular coordinate system. The no-slip boundary conditions are implemented in the body boundary cells. The use of a subgrid-scale turbulence model enables us to resolve the structure of the 3D vortical flows past road vehicles. Simulation is performed for the Ahmed model as well as the GEOSTORM model with a quarter and a half-million grid points, respectively, and the results are compared with experimental results.
Citation
Matsunaga, K., Miyata, H., Aoki, K., and Zhu, M., "Finite-Difference Simulation of 3D Vortical Flows Past Road Vehicles," SAE Technical Paper 920339, 1992, https://doi.org/10.4271/920339.Also In
Vehicle Aerodynamics: Wake Flows, Computational Fluid Dynamics, and Aerodynamic Testing
Number: SP-0908; Published: 1992-02-01
Number: SP-0908; Published: 1992-02-01
References
- Morel T. ‘ Aerodynamic Drag of Bluff Body Shapes Characteristic of Hatch-Back Cars ’ SAE paper 780267 1978
- Ahmed S. R. et al. ‘ Some Salient Features of the Time-Averaged Ground Vehicle Wake ’ SAE paper 840300 1980
- Miyata H. Nishimura S. ‘ Finite Difference Simulation of Nonlinear Ship Waves ’ J. Fluid Mech. 157 1985 327 357
- Miyata H. Yamada Y. ‘ A Finite Difference Method for 3D Flows About Bodies of Complex Geometry in Rectangular Coordinate Systems ’ Intern. J. Numerical Methods in Fluids 14 1992