电弧风洞模拟ZnS红外窗口表面温度响应

发布时间：2018-10-16 13:08

【摘要】：为了开展红外窗口地面试验研究,需用电弧风洞准确模拟出红外窗口表面温度响应过程,ZnS具有红外透明性,地面流场模拟试验中,在不影响其流场状态情况下较难获得其表面温度,因此无法模拟出红外窗口的温度响应过程。介绍了在电弧风洞上模拟ZnS红外窗口表面温度响应的方法,首先使用与ZnS相似热物性参数的2Cr13获得表面温度,接着模拟出红外窗口流场状态及温度响应过程,最后通过电弧风洞流场试验进行验证。研究结果表明:在150~250℃温度区间,2Cr13与ZnS在电弧风洞流场试验中的温度响应一致。使用与ZnS相似热物性参数的2Cr13测试ZnS表面温度实现电弧风洞模拟ZnS表面温度响应具有一定可行性。
[Abstract]:In order to carry out the ground test of infrared window, it is necessary to accurately simulate the temperature response process of infrared window surface with arc wind tunnel. ZnS has infrared transparency, and in the simulation test of ground flow field, It is difficult to obtain the surface temperature without affecting the flow field, so the temperature response process of the infrared window can not be simulated. The method of simulating the surface temperature response of ZnS infrared window in arc wind tunnel is introduced. Firstly, the surface temperature is obtained by using 2Cr13 with similar thermal physical parameters as ZnS, and then the flow field and temperature response process of infrared window are simulated. Finally, the flow field test of arc wind tunnel is carried out. The results show that the temperature response of 2Cr13 and ZnS in the arc wind tunnel flow field is the same in the temperature range of 150 ~ 250 鈩，

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