仿生非光滑汽车表面的减阻分析

摘要/Abstract

摘要：

基于计算流体力学数值模拟方法,将非光滑表面应用于汽车。通过仿真实验研究非光滑车身表面气动减阻的可行性,并采用正交试验方法，通过计算汽车的空气阻力系数来分析非光滑单元体的形状、大小，以及分布位置和排列方式对减阻性能的影响，根据分析结果得到了合理且能够减阻的汽车仿生非光滑表面结构。


关键词: 非光滑, 汽车, 减阻, 空气阻力系数, 正交试验, CFD

Abstract:

This paper applied non-smooth surface to automobile,and used CFD to research the feasibility of aerodynamic drag reduction on automobile by using bionic non-smooth automobile surface.Furthermore,an orthogonal experiment was designed.By calculating the aerodynamic drag coefficient of automobile,the performances of aerodynamic drag reduction on different bionic non-smooth automobile surface were compared,and the most reasonable bionic non-smooth automobile surface structure was obtained,that is able to reduce aerodynamic drag.

Key words: non-smooth, automobile, drag reduction, aerodynamic drag coefficient, orthogonal experiment, computational fluid dynamics(CFD)

中图分类号:

U461.1
TB17

谌可, 王耘, 曹开元, 宋小文. 仿生非光滑汽车表面的减阻分析[J]. 中国机械工程, 2012, 23(8): 1001-1006.

CHEN Ge, WANG Yun, CAO Kai-Yuan, SONG Xiao-Wen. Analysis of Aerodynamic Drag Reduction on Automobile by Using Bionic Non-smooth Surface[J]. China Mechanical Engineering, 2012, 23(8): 1001-1006.

参考文献

[1]谷正气.汽车空气动力学[M]北京:机械工业出版社,2006.
[2]任露泉[1],王淑杰[1],韩志武[1],邱兆美[1].典型植物叶片非光滑表面的纳米力学特性[J].吉林大学学报：工学版,2007,37(5):1121-1125.
[3]Bechert D W,Bruse M,Hage W. Experiments with Three--dimensional Riblets as an Idealized Model of Shark Skin[J].Experiments in Fluids,2000,(05):403-412.
[4]Han M,Lim H C,Jang Y G. Fabrication of a Micro--riblet Film and Drag Reduction Effects on Curved Objects[J].Transducers,2003,(12):396-399.
[5]王福军.计算流体动力学分析[M]北京:清华大学出版社,2004.
[6]余志生.汽车理论[M]北京:机械工业出版社,2009.
[7]傅立敏.汽车空气动力学数值计算[M]北京:北京理工大学出版社,2001.
[8]丛茜[1],任露泉[1],吴连奎[1],陈秉聪[1],李安珙[2],胡阿林[3].几何非光滑生物体表形态的分类学研究[J].农业工程学报,1992,8(2):7-12.
[9]王再宙[1],张春香[1],郑淑芝[1],王忠良[1].仿生非光滑凹坑表面模型建立及仿真研究[J].机床与液压,2011,39(1):92-94.
[10]Klumpp S,Meinke M,Sehroder W. Numerical Simulation of Riblet Controlled Spatial Transition in a Zero- pressure- gradient Boundary Layer[J].Flow Turbulence and Combustion,2010,(01):57-71.
[11]Liu Zhihua,Dong Wencai,Xiong Ying. Analy-sis on Factors and Mechanism of Drag Reduction by Grooved Surface[J].Journal of Ship Mechanics,2007,(06):820-8,31.
[12]方开泰;马长兴.正交与均匀试验设计[M]北京:科学出版社,2001.
[13]陈定方;罗亚波.虚拟设计[M]北京:机械工业出版社,2007.
[14]傅立敏,刘锡国.典型汽车尾流结构的研究[J].汽车工程,1996,18(6):343-347.
[15]封云[1,2],丛茜[1],金敬福[1],张宏涛[1,2],任露泉[1],.沟槽非光滑表面流场的数值分析[J].吉林大学学报：工学版,2006,0(S2):103-107.