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旋转条件下“冲击/出流”双层壁内部换热实验 被引量：4

Experimental research on heat transfer of "impingement/effusion" double-plate configuration in rotating state
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摘要 以高效航空发动机涡轮叶片内部冷却为研究背景,在旋转条件下对带气膜出流的双层壁内部冲击换热特性进行了研究.实验在旋转与冲击方向相同和相反两种情况下进行,得到了冲击雷诺数Rej（5 000～10 000）、旋转数Ro（0～0.003 532）、无因次温比（Tw-Tf）/Tw（0.061～0.136）的变化对冲击靶面换热特性的影响规律;通过对“双层壁”的实验结果与常规“冲击/气膜”冷却结构的实验结果的比较发现,在不同的流动和旋转状态下,前者换热能力强于后者15%以上. 　Based on the internal cooling turbine blade of high-performance aeroengine,the internal heat transfer characteristics of double-plate configuration with film cooling have been carried out in rotating state.The test was performed in the same and opposite direction of rotation.Thus,the effect of jet Reynolds numbers Rej（5 000～10 000）,rotation numbers Ro（0～0.003 532）and wall-to-jet temperature difference ratios（Tw-Tf）/Tw（0.061～0.136）on heat transfer characteristics of impingement was obtained.By comparing the experiment results of both double-plate configuration and general configuration of impingement/effusion structure,it is observed that the heat transfer of double-plate configuration is 15% stronger than that of general configuration.
作者 徐磊 常海萍 潘金栋
机构地区 南京航空航天大学能源与动力学院
出处 《航空动力学报》 EI CAS CSCD 北大核心 2007年第10期1658-1662,共5页 Journal of Aerospace Power
关键词 航空、航天推进系统 旋转 涡轮叶片 气膜冷却 冲击冷却 aerospace propulsion system rotation turbine blade film cooling impinging cooling
分类号 V231.1 [航空宇航科学与技术—航空宇航推进理论与工程]
  • 相关文献

参考文献10

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二级参考文献13

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共引文献47

同被引文献34

  • 1徐磊,常海萍,常国强,张镜洋.叶片弦中区内部气膜孔局部换热特性实验[J].航空动力学报,2006,21(2):331-335. 被引量：1
  • 2毛军逵,郭文,常海萍,徐磊,张镜洋,常国强.小空间内冲击/气膜复合冷却换热特性试验[J].航空动力学报,2007,22(3):352-359. 被引量：6
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  • 10Parsons J A,Han J C.Rotation effect on jet impingement heat transfer in smooth rectangular channels with film coolant extraction[J].International Journal of Rotating Machinery,2001,7(2):87-103.

引证文献4

航空动力学报
2007年 第10期

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