Influence of Wake Characteristics of a Representative Car Model by Delaying Boundary Layer Separation

被引：6

作者：

Gopal, P. ^{[1
]}

Senthilkumar, T. ^{[1
]}

机构：

[1] Anna Univ, Univ Coll Engn, Dept Automobile Engn, BIT Campus, Tiruchirappalli 620024, Tamil Nadu, India

来源：

JOURNAL OF APPLIED SCIENCE AND ENGINEERING | 2013年 / 16卷 / 04期

关键词：

Aerodynamic Drag; Passive Control Device; Drag Characteristics; Drag Coefficient; Vortex Generators;

D O I：

10.6180/jase.2013.16.4.04

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The main causes of aerodynamic drag for automotive vehicles are the separation of flow near the vehicle's rear end. By reducing the drag it is possible to increase the fuel economy. To delay flow separation, vortex generators are tested for application to the roof end of a representative car model. It is commonly used on aircraft to prevent flow separation. Vortex generators themselves create drag, but they also reduce drag by preventing flow separation at downstream. In this paper the effect of vortex generators in the flow field and the mechanism by which these effects take place are studied. The paper also illustrates the computational fluid dynamics analysis of vortex generators in the representative car model. Various flow characteristics like pressure and velocity distribution, path line characteristics, vector flow, and wake studies at the rear end are discussed in detail.

引用

页码：363 / 374

页数：12

共 18 条

[11]

McBeath S., Competition car downforce, A Practical Hand Book, (1998)

[12]

McBeath S., Competition car aerodynamics, A Practical Hand Book, (2006)

[13]

Scott-Pomerantz C.D., The K Epsilon Model in the Theory of Turbulence, (2004)

[14]

Murad N.M., Computational Fluid Dynamics (CFD) of Vehicle Aerodynamics and Associated Acoustics, (2009)

[15]

Connor C., Kharazi A., Walter J., Martindale B., Comparison of Wind Tunnel Configurations for Testing Closed-Wheel Race Cars: A CFD Study, (2006)

[16]

Reuss R.L., Hoffmann M.J., Gregorek G.M., Effects of surface roughness and vortex generators on the naca 4415 air foil, Technical Report, (1995)

[17]

Kieselbach R.J.F., Streamlining vehicles 1945- 1965 a historical reviews, Journal of Wind Engineering and Industrial Aerodynamics, 22, 2-3, pp. 105-113, (1986)

[18]

Richard M., Steven W., Bauer X.S., Simple and Low-Cost Aerodynamic Drag Reduction Devices for Tractor-Trailer Trucks, (2003)

← 1 2 →