Interpretation of gas-film cooling against aero-thermal heating for high-speed vehicles

doi:10.1007/s10483-016-2144-8

Applied Mathematics and Mechanics (English Edition) ›› 2016, Vol. 37 ›› Issue (12): 1615-1630.doi: https://doi.org/10.1007/s10483-016-2144-8

Interpretation of gas-film cooling against aero-thermal heating for high-speed vehicles

Ming DONG^1,2

1. Department of Mechanics, Tianjin University, Tianjin 300072, China;
2. Tianjin Key Laboratory of Modern Engineering Mechanics, Tianjin 300072, China

收稿日期:2015-12-23 修回日期:2016-05-22 出版日期:2016-12-01 发布日期:2016-12-01
通讯作者: Ming DONG E-mail:dongming@tju.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Nos. 11472189 and 11332007)

Interpretation of gas-film cooling against aero-thermal heating for high-speed vehicles

Ming DONG^1,2

1. Department of Mechanics, Tianjin University, Tianjin 300072, China;
2. Tianjin Key Laboratory of Modern Engineering Mechanics, Tianjin 300072, China

Received:2015-12-23 Revised:2016-05-22 Online:2016-12-01 Published:2016-12-01
Contact: Ming DONG E-mail:dongming@tju.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Nos. 11472189 and 11332007)

摘要/Abstract

摘要：

The possible application of the film-cooling technique against aero-thermal heating for surfaces of high-speed flying vehicles is discussed. The technique has been widely used in the heat protection of gas turbine blades. It is shown in this paper that, by applying this technique to high-speed flying vehicles, the working principle is fundamentally different. Numerical simulations for two model problems are performed to support the argument. Besides the heat protection, the appreciable drag reduction is found to be another favorable effect. For the second model problem, i.e., the gas cooling for an optical window on a sphere cone, the hydrodynamic instability of the film is studied by the linear stability analysis to observe possible occurrence of laminar-turbulent transition.

关键词: film cooling, linear stability analysis, aero-thermal heating, numerical simulation, laminar-turbulent transition

Abstract:

Key words: film cooling, linear stability analysis, aero-thermal heating, numerical simulation, laminar-turbulent transition

中图分类号:

76E09
76K05

Ming DONG. Interpretation of gas-film cooling against aero-thermal heating for high-speed vehicles[J]. Applied Mathematics and Mechanics (English Edition), 2016, 37(12): 1615-1630.

参考文献

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Interpretation of gas-film cooling against aero-thermal heating for high-speed vehicles

Interpretation of gas-film cooling against aero-thermal heating for high-speed vehicles

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