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首页> 外文期刊>International Journal of Heat and Mass Transfer >Effect of heat transfer on an angled cavity placed in supersonic flow
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Effect of heat transfer on an angled cavity placed in supersonic flow

机译：传热对超音速流动中倾斜腔的影响

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摘要

Experimental and numerical studies on the effect of heat transfer to an open cavity placed in supersonic crossflow are presented. Cavity floor is subjected to the desired amount of heat flux and the consequent effects in the flow dynamics inside the cavity and its neighborhood are systematically assessed. Cavity flowfield has been visualized using high-speed Schlieren imaging and pressure on the cavity floor has been measured using both steady and unsteady pressure transducers. Two-dimensional unsteady compressible turbulent flow field has been numerically simulated using a Harten-Lax-van Leer-Contact (HLLC) scheme based unstructured finite volume method solver. The numerical method has been validated using both experimental data available in the literature as well as the wall pressure measured in the present study. Significant changes in flow dynamics such as the growth of the recirculation region, shearlayer oscillation, shearlayer impingement on the aft wall of the cavity, and frequency of cavity induced oscillations have been observed. Experimental observations are well complemented by the numerical studies and could reveal the physics of alteration in cavity flow dynamics with the heat addition. (C) 2019 Elsevier Ltd. All rights reserved.
机译：实验和数值研究了传热对超音速错流的开放腔的影响。使型腔底板承受所需的热通量，并系统地评估型腔内部及其附近区域对流动动力学的影响。腔流场已使用高速Schlieren成像进行了可视化，并且使用稳定和不稳定压力传感器测量了腔底的压力。使用基于Harten-Lax-van Leer-Contact（HLLC）方案的非结构化有限体积方法求解器，对二维非定常可压缩湍流场进行了数值模拟。数值方法已经使用文献中提供的实验数据以及本研究中测得的壁压进行了验证。已经观察到流动动力学的显着变化，例如再循环区域的增长，剪切层振荡，剪切层在空腔后壁上的撞击以及空腔引起的振荡的频率。数值研究很好地补充了实验观察结果，并且可以揭示随着热量增加腔流动力学变化的物理原理。 （C）2019 Elsevier Ltd.保留所有权利。

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