平面叶栅中湿蒸汽两相凝结与流动问题的数值分析  

Numerical Analysis of the Issue of the Wet-steam Condensation and Flow in 2D Cascade

作　　者：张峰[1] 谭欣星[1] 鞠霞[1] 

机构地区：[1]长沙理工大学能源与动力工程学院,湖南长沙410076

出　　处：《汽轮机技术》2007年第4期296-298,300,共4页Turbine Technology

摘　　要：汽轮机末级中存在大量汽液两相混合流动现象。通过对湿蒸汽流动过程的分析,以经典成核理论为基础,对平面叶栅中的湿蒸汽流动进行了模拟。计算结果显示了蒸汽凝结主要发生的区域及在整个流场中湿蒸汽的流动特征。通过对流场的分析及与实验数据的对比,表明所用计算模型及方法可以正确模拟湿蒸汽流动过程,为优化设计和减小冲击损害提供依据。Much phenomenon of the steam-liquid mixture flow existed in the last stage of turbine. Through analyzing the process of wet-steam flow, basis on the classical nucleate theory, simulated the wet-steam flow in the plane cascade. The results showed the major area of steam condensed and the flow feature in the whole flow field. The comparison between numerical result and experimental data indicated that the method was feasible and could be used to simulate the flow accurately, provided the basis for optimizing design and reducing the damage of impingement.

关 键 词：湿蒸汽 两相流动 汽轮机 数值模拟 

分 类 号：TK269.1[动力工程及工程热物理—动力机械及工程]