Numerical analysis on the relationship between aerodynamic drag coefficient and 3d molding of rear view mirror

Author

Yu, Guanhua ; Liu, Dexin

Author_Institution

Sch. of Mech. Eng., Tianjin Univ., Tianjin, China

Volume

1

fYear

2011

fDate

20-21 Aug. 2011

Firstpage

117

Lastpage

121

Abstract

Based on numerical calculation theory of fluid mechanics and modeling theory, the influence of rear view mirror´s complex curved surface on aerodynamic drag coefficient was analyzed to construct low drag coefficient and high quality surface. Extracted two-dimensional isoparm and analysed the position, tangency and curvature continuous curve separately to realize the aim of reducing 35% of shape resistance coefficient. Then construct three-dimensional surface using isoparm from 3D drawing to verify that under the condition of invariable windward acreage, modifying surface modeling can decrease the rearview mirror aerodynamic coefficient. carried out fluid numerical analysis on 25 kinds of curves and 9 kinds of surface using software FLUENT totally. The data can not only be used to improve the rearview mirror shape, reduce drag coefficient and automobile fuel consumption, but also be used as reference to research blunt body e.g. car body styling which creates turbulence tempestuously.

Keywords

aerodynamics; automotive components; computational fluid dynamics; drag; drawing (mechanical); fluid mechanics; mechanical engineering computing; mirrors; moulding; production engineering computing; 3D drawing; 3D molding; FLUENT software; aerodynamic drag coefficient; automobile fuel consumption; complex curved surface; curvature continuous curve; fluid mechanics; fluid modeling theory; fluid numerical analysis; rear view mirror; shape resistance coefficient; surface modeling; surface quality; turbulence; two dimensional isoparm; Aerodynamics; Atmospheric modeling; Drag; Face; Mirrors; Shape; Surface resistance; aerodynamic drag coefficient; fluid numerical analysis; modeling characteristic; rearview mirror;

fLanguage

English

Publisher

ieee

Conference_Titel

Computing, Control and Industrial Engineering (CCIE), 2011 IEEE 2nd International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-9599-3

Type

conf

DOI

10.1109/CCIENG.2011.6007971

Filename

6007971