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间隙高度对自发射流抑制叶尖泄漏的影响

胡建军 孔祥东 徐进良

胡建军, 孔祥东, 徐进良. 间隙高度对自发射流抑制叶尖泄漏的影响[J]. 航空动力学报, 2013, 28(7): 1510-1516.
引用本文: 胡建军, 孔祥东, 徐进良. 间隙高度对自发射流抑制叶尖泄漏的影响[J]. 航空动力学报, 2013, 28(7): 1510-1516.
HU Jian-jun, KONG Xiang-dong, XU Jin-liang. Effect of clearance height on tip leakage reduced by spontaneous tip injection[J]. Journal of Aerospace Power, 2013, 28(7): 1510-1516.
Citation: HU Jian-jun, KONG Xiang-dong, XU Jin-liang. Effect of clearance height on tip leakage reduced by spontaneous tip injection[J]. Journal of Aerospace Power, 2013, 28(7): 1510-1516.

间隙高度对自发射流抑制叶尖泄漏的影响

基金项目: 河北省自然科学基金青年科学基金(E2011203094);国家重点基础研究发展计划(2011CB710703)

Effect of clearance height on tip leakage reduced by spontaneous tip injection

  • 摘要: 通过数值求解三维定常黏性雷诺时均N-S方程,获得了单孔叶尖自发射流条件下不同叶顶间隙的叶栅流场,对比分析了间隙高度对自发射流与叶尖泄漏流相互作用特性、叶尖泄漏流量以及叶片载荷的影响.结果表明:当叶顶间隙高度为1mm(t/H=0.5%)时,自发射流对泄漏流有明显的阻挡作用,泄漏流量比减少0.06%,同时叶片载荷增加1.39%.当叶顶间隙高度增大到4mm(t/H=2%)时,自发射流的阻挡作用及对叶片载荷的增加作用基本消失;减小间隙高度可以有效提高自发射流的控制效果,同时降低因分离造成的流动损失;自发射流的存在显著改变了间隙流场分布及叶尖吸力面附近静压系数分布,计算发现当泄漏流绕自发射流流过时,下游流场出现类似卡门涡街的涡分布现象.

     

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出版历程
  • 收稿日期:  2012-07-11
  • 刊出日期:  2013-07-28

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