Measuring method of overflow liquid film thickness in hypersonic flow

被引：0
|
作者：
Yuan C. [1 ,2 ]
Li J. [1 ]
Chen H. [1 ]
Jiang Z. [1 ,2 ]
Yu H. [1 ]
机构：
[1] State Key Laboratory of High-temperature Gas Dynamic, Institute of Mechanics, Chinese Academy of Sciences, Beijing
[2] School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing
来源：
Yuan, Chaokai (yuanck@imech.ac.cn) | 2018年 / Chinese Academy of Sciences卷 / 48期
关键词：
Active cooling; Conductance method; Hypersonic thermal protection; Liquid film thickness;
D O I：
10.1360/N092017-00178
中图分类号：
学科分类号：
摘要：
Hypersonic overflow liquid film cooling is a new method for aircraft thermal protection, and is still in the exploratory stage. As the most basic parameter, liquid film thickness helps to reveal the film forming conditions, which promotes the cooling mechanism research and evaluate cooling performance reasonably. In this paper, aiming at the film thickness measurement, methods in each research field were reviewed. Feasibility of the methods were analyzed and discussed in detail, and the conductance method was selected for its advantages. Experiments were carried out in a hypersonic wind tunnel, with a 15° wedge model and Mach number 6 flow condition. Liquid film thickness during the formation of liquid film was obtained, which verified the feasibility of the conductance method. Meanwhile, characteristics of the overflow liquid film in hypersonic flow were analyzed based on the measurement. © 2018, Science Press. All right reserved.
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页码：629 / 638
页数：9
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