水蒸汽亚毫秒级凝结实验研究  

Experimental Research on Sub-Millisecond Condensation of Water Vapor

作　　者：王新宝 李健斌 金熠 陈龙奎 黄生洪[1] 翟超[1] 常光 刘中臣 WANG Xin-bao;LI Jian-bin;JIN Yi;CHEN Long-kui;HUANG Sheng-hong;ZHAI Chao;CHANG Guang;LIU Zhong-chen(School of Engineering Science,University of Science and Technology of China,Hefei 230027,China;AVIC Aerodynamics Research Institute,Shenyang110034,China;Aviation Key Laboratory of Science and Technology on High Speed and High Reynolds NumberAerodynamic Force Research,Shenyang 110034,China)

机构地区：[1]中国科学技术大学工程科学学院,安徽合肥230027 [2]中国航空工业空气动力研究院,辽宁沈阳110034 [3]高速高雷诺数气动力航空科技重点实验室,辽宁沈阳110034

出　　处：《推进技术》2023年第8期65-72,共8页Journal of Propulsion Technology

基　　金：国家自然科学基金(U21B6003)。

摘　　要：为模拟高超声速风洞中水蒸汽凝结现象,设计了一种基于稀疏波反射原理的凝结实验系统,采用“空间等效时间”思想,在固定位置测量流场随时间的变化,实现了0.14~1.4ms亚毫秒时间尺度的凝结。通过吸收光谱测量方法实现了凝结过程中流场温度、水蒸汽含量的高时间分辨率(100kHz)测量,对小时间尺度凝结现象的影响因素进行了分析。结果表明:不同亚毫秒时间尺度下凝结规律相同;水蒸汽含量或试验段初始压力增加,凝结发生越快,即喷管中的凝结位置越靠前,而发生凝结时的拐点温度越高;初始压力与水蒸汽含量不变时,压力下降速度越快,发生凝结位置越靠前,发生凝结时拐点温度相同。To simulate the condensation phenomenon of water vapor in a hypersonic wind tunnel,a conden-sation experiment system based on the principle of sparse wave reflection was designed.With the idea of“space equivalent time”,the change of airflow over time was measured at a fixed position,and condensation on sub-mil-lisecond time scales from 0.14ms to 1.4ms was achieved.Also,with the absorption spectrum measurement meth-od,the temperature and water vapor content in the condensation process of the flow field were measured with high time resolution(100kHz),and the influence factors of condensation phenomenon on small time scales were anal-ysed.The results show that:the condensation laws keep the same at different sub-millisecond time scales.The condensation occurs faster when the water vapor content increases or the initial pressure in the test section increases,which means the more forward the condensation position in the nozzle,the higher the inflection point temperature is when condensation occurs.When the initial pressure and water vapor content are constant,the faster the pressure drops,the earlier the condensation occurs,and the temperature at the inflection point remains unchanged when condensation occurs.

关 键 词：燃烧加热风洞 水蒸汽 小时间尺度 非平衡凝结 凝结规律 吸收光谱技术 

分 类 号：V211.73[航空宇航科学与技术—航空宇航推进理论与工程]