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

[1]

Fletcher C.A.J., Stewart G.D.J., Bus drag reduction by the trapped vortex concept for a single bus and two buses in tandem, Journal of Wind Engineering and Industrial Aerodynamics, 24, 2, pp. 143-168, (1986)

[2]

Barrett D.S., Triantafyllou M.S., Yue D.K.P., Grosenbaugh M.A., Wolfgang M.J., Drag reduction in fish-like locomotion, Journal of Fluid Mechanics, 392, 1, pp. 183-212, (1999)

[3]

Elle K., Design of An Aerodynamic Green Car, (2007)

[4]

Gerhardt H.J., Kramer C., Ammerschlager T.H., Fuhramann R., Aerodynamic optimization of a group-5 racing car, Journal of Wind Engineering and Industrial Aerodynamics, 9, 1-2, pp. 155-165, (1981)

[5]

Reneaux J., Overview on drag reduction technologies for civil transport aircraft, The Fourth European Congress on Computational Methods in Applied Sciences and Engineering, (ECCOMAS), pp. 1-18, (2004)

[6]

Fred B., Reducing aerodynamics drag and fuel consumption, Global Climate and Energy Project, (2005)

[7]

Giancarlo G., Motor Vehicle Dynamics: Modeling and Simulation, 43, (1999)

[8]

Onorato M., Costelli A.F., Garrone A., Viassone L., Experimental analysis of vehicle wakes, Journal of Wind Engineering and Industrial Aerodynamics, 22, 2-3, pp. 317-330, (1986)

[9]

Masaru K., Nagayoshi T., Hamamoto N., Research on aerodynamic drag reduction by vortex generators, Mitsubishi Motors, Technical Review, 16, (2004)

[10]

Jasper M., Minimise Vortex Drag of A Passenger Car, (2010)

← 1 2 →