磷光热图技术在常规高超声速风洞热环境实验中的应用  

Heat Transfer Measurement Using a Quantitative Phosphor Thermography System in Blowdown Hypersonic Facility

作　　者：韩曙光[1] 贾广森 文帅[1] 毕志献[1] 

机构地区：[1]中国航天空气动力技术研究院,北京100074

出　　处：《气体物理》2017年第4期56-63,共8页Physics of Gases

基　　金：国家自然科学基金(91216113)

摘　　要：通过采取快速插入、建立同步采集系统等措施,在中国航天空气动力技术研究院FD-07常规高超声速风洞建立了磷光热图技术,并成功地获得了平板三角翼模型表面热流分布.基于实验结果,初步分析了来流Reynolds数等参数对三角翼表面热流分布的影响.结果表明,三角翼外形中心线处转捩靠后,两侧转捩靠前,且随着来流Reynolds数的增加,转捩位置进一步前移.总的来说,磷光热图技术能够直观地显示流动转捩发生的位置以及转捩后湍流区的形状,为高超声速飞行器热防护设计提供了一种新的技术途径.The phosphor thermography system was established in FD-07 blowdown hypersonic facility of China Academy of Aerospace Aerodynamics( CAAA) through the fast injection system and other measurements. The surface heat flux distribution of the delta-wing was successfully obtained by the experiment. A brief analysis of the change of surface heat-transfer was made. The results show that Reynolds number has affected the magnitude of heat-flux and the position of transition point obviously. As the Reynolds number increases, the transition position moves forward. In general the phosphor thermography is an adventure technique which could obtain heat-flux data of the whole model without the damage to the model surface,and a visible thermal mapping can be shown after the test.

关 键 词：常规高超声速风洞 磷光热图 热流 三角翼 转捩 

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]