非催化壁材料在非平衡流场条件下的热考核试验方法研究  

Research on method for evaluating the thermal protective performance of non-catalysis material in non-equilibrium flow

作　　者：于明星[1,2] 白书欣[1] 徐晓亮[2] 曹占伟[2] 

机构地区：[1]国防科学技术大学,长沙410073 [2]北京临近空间飞行器系统工程研究所,北京100076

出　　处：《实验流体力学》2017年第4期84-89,共6页Journal of Experiments in Fluid Mechanics

基　　金：国家自然科学基金项目(51506008)

摘　　要：针对电弧风洞试验条件下非催化壁防热材料在非平衡流场中存在的防热性能"欠考核"问题,提出了有效考核方法。以典型陶瓷基复合材料尖劈外形试件为例,采用CFD数值模拟与试验状态调试相结合的方法,对典型电弧风洞试验条件下完全催化壁和非催化壁材料的热流进行了数值模拟,并结合热流实测结果,确定了风洞试验状态并完成了试验,实现了对该类热防护材料防热性能的有效考核,为非催化壁材料防热性能试验"欠考核"问题提供了解决途径。In this paper, an effective wind tunnel test method is presented for evaluating the thermal protective performance of the non-catalysis material. The method is proved to be reasonable by iterating the results between CFD simulation and the wind tunnel operating parameter, taking a typical CMC（ceramic matrix composite） wedge-edge specimen for example. The operating parameters of the arc tunnel was determined by comparing the simulation results of the non-catalysis and the full-catalysis assumption. The wind tunnel test results indicate that the test on the specimen was performed as expected, which may be helpful to solve the ‘under-evaluating’ problem for the non-catalysis material in the non-equilibrium flow.

关 键 词：非催化 非平衡流 防热性能 电弧风洞试验 考核方法 

分 类 号：V211.74[航空宇航科学与技术—航空宇航推进理论与工程]