|
|
Aerodynamic drag reduction of passenger car based on top and side spoiler |
State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun, Jilin 130022, China |
|
|
Abstract Aerodynamic characteristic is one of the aspects that should be concerned considerably for car body design. The principle and method of computational fluid dynamics were applied to numerically simulate the external flow field about the simplified geometrical model of fast back type car. The drag coefficient was reduced via install rear accessories. Based on the triangular prism unstructured grid and Realizable k-ω SST model, the flow fields of top and side spoilers with different size were simulated to get the car′s aerodynamic drag coefficient, the aerodynamic characteristics of the surface pressure distribution, etc. The flow characteristics and the resistance coefficient of various schemes were analyzed. The results show that the different sizes of spoilers with reasonable matching and optimization can improve the aerodynamic characteristics of car and reduce the aerodynamic drag coefficient.
|
Received: 27 November 2014
|
|
|
|
|
|
|