本文对不带肋和带45°肋气膜冷却平板的三维对流换热与导热耦合传热问题进行了数值模拟.网格划分采用非结构化网格,湍流模型为SSTk-ω模型,近壁处采用壁面函数法,采用SIMPLEC算法求解速度和压力的耦合.计算获得了不带肋和带45°肋气膜冷却平板的流场分布和平板内外表面的换热系数值.结果表明带45°肋的气膜冷却平板通道流场结构比较复杂,平板表面平均温度较无肋气膜冷却平板表面平均温度下降,而在近气膜孔区域冷、热表面平均换热系数较无肋时增大.
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