A Review of CFD Methods and Their Application to Automobile Aerodynamics

1992 ◽  
Author(s):  
Toshio Kobayashi ◽  
Kozo Kitoh
Keyword(s):  
Automobile Aerodynamics

scholarly journals Fluid-Dynamic Force Measurement of Ahmed Model in Steady-State Cornering

Energies ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 6592
Author(s):  
Takuji Nakashima ◽  
Hidemi Mutsuda ◽  
Taiga Kanehira ◽  
Makoto Tsubokura
Keyword(s):  
Steady State ◽  
Aerodynamic Drag ◽  
Force Measurement ◽  
Fluid Dynamic ◽  
Fuel Efficiency ◽  
Dynamic Force ◽  
Total Drag ◽  
Automobile Aerodynamics ◽  
Numerical Research ◽  
Good Agreement

The effects of on-road disturbances on the aerodynamic drag are attracting attention in order to accurately evaluate the fuel efficiency of an automobile on a road. The present study investigated the effects of cornering motion on automobile aerodynamics, especially focusing on the aerodynamic drag. Using a towing tank facility, measurements of the fluid-dynamic force acting on Ahmed models during steady-state cornering were conducted in water. The investigation included Ahmed models with slant angles θ = 25° and 35°, reproducing the wake structures of two different types of automobiles. The drag increase due to steady-state cornering motion was experimentally measured, and showed good agreement with previous numerical research, with the measurements conducted at a Reynolds number of 6 × 105, based on the model length. The Ahmed model with θ = 35° showed a greater drag increase due to the steady-state cornering motion than that with θ = 25°, and it reached 15% of the total drag at a corner with a radius that was 10 times the vehicle length. The results indicated that the effect of the cornering motion on the automobile aerodynamics would be more important, depending on the type of automobile and its wake characteristics.

The Effects of Detailed Tire Geometry on Automobile Aerodynamics - a CFD Correlation Study in Static Conditions

2009 ◽  
Vol 2 (1) ◽  
pp. 849-860 ◽  
Author(s):  
Todd H. Lounsberry ◽  
Mark E. Gleason ◽  
Satheesh Kandasamy ◽  
Khaled Sbeih ◽  
Richa Mann ◽  
...  
Keyword(s):  
Correlation Study ◽  
Automobile Aerodynamics ◽  
Static Conditions

AUTOMOBILE AERODYNAMICS

1960 ◽  
Author(s):  
Kent B. Kelly ◽  
Peter Kyropoulos ◽  
William F. Tanner
Keyword(s):  
Automobile Aerodynamics
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