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| 激波干扰对发汗冷却影响的数值模拟研究 | |
| 引用本文： | 张红军,康宏琳. 激波干扰对发汗冷却影响的数值模拟研究[J]. 宇航学报, 2021, 42(3): 324-332. DOI: 10.3873/j.issn.1000-1328.2021.03.007 |
| 作者姓名： | 张红军 康宏琳 |
| 作者单位： | 北京空天技术研究所，北京 100074 |
| 基金项目： | 国家自然科学基金（11802296）；装备预研领域基金（61402060301） |
| 摘 要： | 基于宏观表征体元(REV)的数值模拟方法开展了激波干扰对异质发汗冷却影响的数值模拟研究,获得了外部激波干扰与引射气体边界层耦合相互作用流场特征.研究结果表明,不同冷却介质对于冷却效率有显著的影响,冷却介质比热容越大,相同注入率条件下的冷却效果更好;入射激波干扰会显著影响多孔材料表面的压力分布,使得多孔材料内部冷却介质会... |
| 关 键 词： | 发汗冷却 激波干扰 多孔介质 数值模拟 |
| 收稿时间： | 2020-02-26 |
Numerical Simulation Study on the Effects of ShockWaveInterference on Transpiration Cooling |
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| ZHANG Hong jun,KANG Hong lin. Numerical Simulation Study on the Effects of ShockWaveInterference on Transpiration Cooling[J]. Journal of Astronautics, 2021, 42(3): 324-332. DOI: 10.3873/j.issn.1000-1328.2021.03.007 | |
| Authors: | ZHANG Hong jun KANG Hong lin |
| Affiliation: | Beijing Aerospace Technology Institute, Beijing100074, China |
| Abstract: | The shock wave interference on transpiration coolingis investigated numerically based on the macro representative elementary volume(REV) scale analysis method. The flow field characteristics of the shockwave/transpiration boundary interaction are obtained. The results indicate thatdifferent coolants have significant influence on the cooling efficiency. Thelarger the specific heat capacity of the cooling media, the better the coolingeffect can be achieved under the same blowing ratio condition. The incidentshock wave interference can affect the pressure distribution on the materialsurface, leading to obvious transverse flow of the coolant inside the porousmedia. The redistribution of the coolant flow can remarkably reduce the coolingeffect of the shock wave interference location with higher pressure. The shockwave can also enhance the mixing of the high temperature mainstream and coolingmedia, and the wall recovery temperature can increase accordingly, weakeningthe cooling performance obviously. |
| Keywords: | Transpiration cooling Shock wave interference Porous media Numerical simulation |
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