摘要
以百万千瓦等级汽轮机的低压排汽缸为研究对象,运用CFX仿真分析软件,采用排汽缸单独计算与结合末级动叶联合计算两种方法,以及不同进出口边界条件组合形式,对比研究不同计算条件下的排汽缸气动特性。通过多种计算方案的对比分析,采用结合末级动叶进行联合计算的方法更符合低压排汽缸的实际气动特征,为后续的低压排汽缸优化改进工作提供有效的仿真分析基础。
This paper studies the aerodynamic characteristics of a million kilowatt level of the steam turbine low pressure exhaust hood under the different boundary conditions using CFX simulation analysis software. There are two calculation methods that include exhaust hood calculated separately and the joint calculation combined with the final stage rotor.Through comparison and analysis of a variety of scheme calculation, the joint calculation method based on last stage rotor is more accord with the actual aerodynamic characteristics. The results can provide effective basis of simulation analysis for subsequent low-pressure exhaust hood optimization improvement.
出处
《机械工程师》
2016年第4期193-196,共4页
Mechanical Engineer
基金
南京2014年“321引进计划”人选项目
关键词
排汽缸
仿真分析
总压损失
气动特性
exhaust hood
simulation analysis
total pressure loss
aerodynamic performance
