本文通过数值模拟方法对凹槽叶顶区的气膜孔的位置进行了研究，通过将一个下游气膜孔布置在叶顶前缘来研究气膜孔位置对叶顶区传热的影响。数值模拟结果表明，下游区气膜孔被布置到前缘区，改善了叶顶前缘的低绝热冷却效率区，获得了均匀的气膜保护，同时对下游区的气膜冷却效率影响不大，无论是放在前缘第一气膜孔上游还是靠近吸力边布置，下游区绝热效率和平均传热系数几乎不受该气膜孔在前缘位置的影响。
In the present paper, the influence of the hole site on heat transfer characteristics was iminerically studied by changing one film cooling hole location at trailing edge. The results indicated that the lower film cooling effectiveness zone near the leading edge was protected very well after the fihn cooling hole at the trailing edge moves to leading edge. The existence of the hole location either at the leading edge or near the suction side affected slightly on the film cooling effectiveness.
参考文献
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