飞机电子设备舱空调气流分配的计算方法

 <正> 1.引言 军用飞机电子设备舱中的各种电器设备需要用一定量的冷却空气进行冷却。为此需将供给电子设备舱的总供气量按所要求的比例分配给各设备。保证分配比的方法通常是在通入各电子设备的供气支管中加一相应的限流孔,由限流孔孔径的大小控制流量的多少。可见,确定满足流量要求的限流孔孔径是解决这一问题的关键。关于限流孔孔径的确定,目前尚未看到其计算方法,以往主要靠试验进行试凑。众所周知,这种试凑方法费时费力,很不经济,是一种不得已的方法。因此,笔者力图从解析角度入手,找出限流孔孔径与所

A COMPUTATIONAL METHOD FOR DISTRIBUTING AIRCONDITIONING FLOW IN ELECTRONIC EQUIPMENT CABIN OF AIRPLANES

A computational method for determining the size of orifices used for distributing and limiting the cooling system air flow for the electronic devices in equipment cabin" of airplane is presented. A functional relation of an experimental curve quoted in this paper was founded. The diameter "of the. orifice is calculated by using the relation curve above motioned and the law of fluid dynamics. The Comparison between the Calculated results and test results shows that the proposed method is satisfactory to engineering application.