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中文摘要：
本文对扩张通道和直通道中的超音速气膜冷却进行了数值模拟，分析了主流加速和不加速两种情况下超音速气膜冷却的差异。计算结果表明，在主流加速的情况下，超音速气膜冷却的效果要好于相同进口条件下主流不加速的情况，并且这种差异越到下游越明显。同时，在本文计算的工况范围中，无论主流加速还是不加速，增大主流进口马赫数或者减少冷却流进口马赫数都使气膜冷却效率下降，而壁面静压则由主流气体决定。
英文摘要：
Supersonic film cooling subjected to an accelerated free-stream was numerically investigated. The results indicate that the free-stream acceleration improved the adiabatic film cooling effectiveness relative to constant free-stream flow conditions, especially further downstream. In all cases, increasing the free-stream Mach number or reducing the cooling-air Mach number reduced the adiabatic film cooling effectiveness. The wall static pressure was also found to depend on the freestream conditions.
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