传感器局部温度差异对压缩拐角热流测量的影响

doi:10.7527/S1000-6893.2020.24055

Abstract

Abstract: This work numerically investigates the cold-spot effect on the aerodynamic heating of a hypersonic compression corner. When measuring heat flow of hypersonic aircraft, thermal matching problems caused by the cold-spot effect appear between the sensor and surrounding heat-resistant materials. A self-developed calculation program is used to study the influence of cold-spot effect on the heat flow distributing on the surface of the compression corner, revealing the influencing mechanisms of the cold-spot effect on the surface heat flux distribution in the corner flow region. Calculation results show that the existence of the cold-spot effect will significantly increase the heat flow value in cold spot areas; the range of heat flow caused by the cold-spot effect becomes larger in the separation domain, and smaller near the reattachment point.

Key words: hypersonic, temperature difference, heat flow measurement, compression corner, flow separation

CLC Number:

V231.1

SHI Kunlun, QIU Yunlong, CHEN Weifang, NIE Chunsheng, CAO Zhanwei. Influence of local temperature difference of sensors on heat flow measurement of compression corner[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(12): 124055-124055.

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Influence of local temperature difference of sensors on heat flow measurement of compression corner

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