有间隙涡炉叶栅涡系结构的数值模拟  

Numerical Study of Vortex Structure within Turbine Cascade with Tip Clearance

作　　者：周岳琨[1] 王光艳 

机构地区：[1]哈尔滨汽轮机厂,黑龙江哈尔滨150046 [2]哈尔滨电力学校

出　　处：《节能技术》2001年第5期14-17,共4页Energy Conservation Technology

摘　　要：对具有 3 6 %相对叶顶间隙的涡轮叶栅三维空间流动进行了数值模拟 ,分析了大间隙涡轮叶栅流场的涡系结构。结果表明在叶顶间隙内部和上半翼展现出了复杂的分离流动 ,同时由于叶顶间隙的存在 ,上。By means of numerical simulation of the flow field within turbine cascade with 3.6% relative tip clearance,detailed flow structures such as vortex in the cascade with large tip clearance are discussed.The result shows that the flow structure in the region from middle span to up end wall is difference from that of the low end wall region,especially the vortex structure near the trealing edge.

关 键 词：顶部间隙 旋涡结构 尾迹 二次流 叶栅涡系结构 数值模拟 汽轮机 

分 类 号：TK263.61[动力工程及工程热物理—动力机械及工程]