The effects of different rear slant angles and ride heights on aerodynamic lift force

Author

Song, Xin ; Gu, Zhengqi

Author_Institution

State Key Lab. of Adv. Design & Manuf. for Vehicle Body, Hunan Univ., Changsha, China

fYear

2011

fDate

15-17 April 2011

Firstpage

5490

Lastpage

5493

Abstract

The external flow field of Ahmed model is simulated by Fluent,and is verified with experiments.On that basis,The Ahmed model with different rear slant angles and ride heights are simulated. Then the reasons for the lift force changing are analized,and the flow field behind the Ahmed model of three different rear slant angles are compared with each other. It shows that the results from Realizable * k-ε are more accurate than the others which are compared in this paper. During the rear slant angle changing from 0 degree to 30 degree, the lift force increase linearly with the angle increasing. With the growth of ride heights, the lift force increase exponentially.

Keywords

aerodynamics; flow simulation; Ahmed flow field model; Fluent simulation; aerodynamic lift force; rear slant angle effect; ride height effect; Aerodynamics; Automotive engineering; Computational modeling; Force; Industries; Land vehicles; Presses; Ahmed model; Realizable k−ε; lift force; rear slant angle; ride height;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Information and Control Engineering (ICEICE), 2011 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-8036-4

Type

conf

DOI

10.1109/ICEICE.2011.5776915

Filename

5776915