厢式货车减阻方法的试验研究

Test Study of Resistance Reduction Method of Van

介绍了厢式货车的减阻方法——主动控制边界层法和被动控制边界层法。主动控制边界层法利用导流滚子给边界层注入动量,以推迟边界层的分离,使尾涡区变窄,从而减小厢式货车的压差阻力;被动控制边界层法是在厢式货车厢体的迎风面上安装井字形隔栅,利用井字形隔栅的导流作用,减小厢体迎风面的压力,推迟厢体上表面前部边界层的分离,改善了气流绕流的状况,从而减小厢式货车的压差阻力。两种方法的减阻效果都非常明显。

The paper introduces the resistance reduction methods of van type vehicles-actively boundary layer control method and passive boundary layer control method. The active boundary layer control method uses the baffle roller to inject the momentum for boundary layer to delay the separation of boundary layer, narrow the wake vortex area and reduce the pressure resistance of van type vehicles. The passive control boundary layer method is to install the “#” shape grid on the side facing against the wind of cargo body of van type vehicle and use the baffle action of “#” shape grid to reduce the pressure force on the side facing against the wind, dely the separation of front boundary layer in upper surface of cargo body, improve the air flow turbulence to reduce the differential pressure resistance of van type vehicle. Both two methods have their marked resistance reduction effects.