300MW汽轮机低压缸末二级三维流场数值模拟  

Numerical Simulation of Flow Filed in Low Pressure Cylinder of 300MW Steam Turbine

作　　者：强彦[1] 

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2009年第4期100-103,共4页Journal of Gansu Sciences

基　　金：国家重点基础研究发展计划(973计划)(2007CB714602)

摘　　要：采用商用计算流体动力学软件,对汽轮机低压缸末二级流场进行了全三维粘性数值模拟.计算结果表明,动静叶间的级间配合不尽合理,且末级根部反动度偏大,引起了较大的激波损失.通过优化设计最终使得二级总效率提高了0.3%.The flow in last two stages of low pressure cylinder of steam turbine has been studied by the three-dimensional viscous numerical simulation method with commercial software.The results show that the inter-stage matching of both the stages is quite inappropriate,and the large reaction at the blade root of last stage results in a high shock wave loss.The total efficiency of the two stages has been improved by 0.3% by optimizing.

关 键 词：能源与动力工程 汽轮机 激波损失 数值模拟 

分 类 号：TK263.1[动力工程及工程热物理—动力机械及工程]