厢式货车的气动附加装置及其减阻机理的分析

Aerodynamic Attachments for Van Body Trucks and Their Resistance Reducing Mechanism

厢式货车的气动阻力随着实用车速的提高而显著增大，在汽车总阻力中所占的比例越来越大，因而其减阻节能的问题日益突出。本文结合具体实例，分析了气流绕流厢式货车各部位的流动机制，明确了气动阻力产生的主要原因，通过对各种气动附加装置减阻机理的分析，提出了减小厢式货车气动阻力的几种有效途径。

With the increase of motor vehicle running speed,the aerodynamic force of vanbody trucks is evidently raised,its proportion in total resistance of motor vehicles becomes more and more,Consequently reducing aerodynamic force and saving energy play an important role increasingly. with actual examples,in this paper the mechanism of airnow bypassing each portion of a van body truck is studied,and the main reasons caused aerodynamic force are clarified. Based on a study of the resistance reducing mechanism of different aerodynamic attachments,a few effective approaches for reducing aerodynamic force of van body trucks are proposed.