本文通过数值模拟分析圆柱孔和扩散孔的单斜孔气膜冷却特性,考察复合角、孔型和吹风比对流场和气膜冷却效果的影响.结果表明,复合角的引入使气膜侧向分布更宽,但冷却效果沿主流方向衰减更快.适中吹风比得到的气膜能更有效的保护壁面.在相同吹风比和复合角条件下,扩散孔的气膜冷却效率比圆柱孔更好,且冷却更为均匀持久.
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