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首页> 外文期刊>International Journal of Heat and Mass Transfer >Influence of shock waves on supersonic transpiration cooling
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Influence of shock waves on supersonic transpiration cooling

机译：冲击波对超声速蒸发冷却的影响

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This paper experimentally and numerically investigates the effect of shock waves on transpiration cooling of a porous plate. The experiments were conducted in a wind tunnel of Mach number 2.8, wherein oblique shock waves were impinged onto the porous plate. A numerical simulation model was used to obtain detailed temperature and flow field distributions near the porous plate surface. The effects of different coolant blowing ratios and shock wave intensities on the transpiration cooling efficiency were studied. The results show that the transpiration cooling efficiency reduces because of the impinging oblique shock waves with the decrease in the fluid velocity near the porous wall, resulting in an increase in the local fluid static temperature. Moreover, the oblique shock waves increase the local static pressure, thus obstructing the coolant outflow and increasing the local wall temperature. (C) 2018 Elsevier Ltd. All rights reserved.
机译：本文通过实验和数值研究了冲击波对多孔板蒸腾冷却的影响。实验在马赫数为2.8的风洞中进行，其中倾斜冲击波撞击到多孔板上。使用数值模拟模型来获得多孔板表面附近的详细温度和流场分布。研究了不同的冷却剂吹入比和冲击波强度对蒸腾冷却效率的影响。结果表明，由于多孔壁附近流体速度的降低，倾斜的冲击波撞击，蒸腾冷却效率降低，从而导致局部流体静态温度升高。此外，倾斜的冲击波增加了局部静压力，从而阻碍了冷却剂的流出并增加了局部壁温。 （C）2018 Elsevier Ltd.保留所有权利。

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