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在激波风洞中马赫数6.1、雷诺数6.2×107/m的流场条件下,基于平板模型开展了防热瓦缝隙热流测量实验,研究了湍流平板边界层情况下T字和十字2种布局缝隙的缝壁热流分布,以及流向角、缝隙宽度、缝隙深度和缝口台阶高度的变化对缝隙热环境的影响。结果表明,缝口边缘特别是T字口迎风壁存在很高的局部热流,测量峰值达到11.6倍平板值,流向角为30°~60°时2种布局缝隙的热环境相对较好,缝壁及缝底热流随缝隙宽度和缝口台阶增大而升高。
Under the flow field of Mach 6.1 and Reynolds number 6.2 × 107 / m in the shock tunnel, a heat-sinking heat sink measurement experiment was carried out based on the slab model. The effects of turbulent boundary conditions on the T-shape and the cross- The distribution of heat flow in the slot wall of the layout slot and the influence of the change of the flow direction angle, the slot width, the slot depth and the slot height on the slot thermal environment. The results show that there is a high local heat flow at the edge of the seam, especially at the T-shaped windward wall. The measured peak reaches 11.6 times the plate value, and the thermal environment of the two kinds of layout cracks is relatively good when the flow angle is 30 ° -60 °. And the crevice bottom heat flow increases with the width of the crevice and the increase of the crevice level.