林泽钦,温涛,王宇清

• 1:华中科技大学机械科学与工程学院
• 2:广东理工职业学院机器人学院
• 3:太原理工大学机械与运载工程学院

摘要(Abstract)：

采用高精度红外热像仪测量了平板气膜冷却效率，比较了双叉排孔和单排孔气膜冷却效率，分析了孔间的相互作用，以及吹风比（M=0.65、1.00、1.50）和密度比（DR=1.0,1.5）对气膜冷却效率的影响；同时还采用数值计算方法比较了气膜冷却下的流场。结果表明：单排气膜孔冷却效率随着吹风比的增加而降低，但是双叉排气膜孔冷却效率大大提高，且随着吹风比的增加而增加，但是在展向气膜覆盖效果变差；增加密度比可以提高气膜冷却效率，但是双叉排孔和吹风比的影响相对密度比更大；双叉排孔相比于单排孔，冷却气流在孔下游形成了反肾形涡，较好抑制了气膜吹离。

关键词(KeyWords)： 涡轮叶片;气膜冷却;冷却效率;双叉排气膜孔;流动与传热

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划项目（2018YFE0206900）~~

作者(Author): 林泽钦,温涛,王宇清

DOI: 10.19666/j.rlfd.202307117

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