摘要
采用CFD数值分析软件对某大功率机组调节级级段进行了气动特性分析,分析对象为包括调节阀、调节级整圈与第一压力级整圈的全真几何模型;分析结果表明在设计工况下,该调节级表现出强烈的非周期性和非轴对称流动特性,与常规周期性边界分析得出的调节级气动性能存在显著差异;该数值分析结果与电厂热力性能试验结果表现出的良好一致性表明该分析方法已具有很好的工程精度。
In this paper,aerodynamic performance and flow characteristic of the controlling stages,including controlling valve,controlling stage and first stage of high cylinder turbine,were investigated by using CFD software.The result indicates that the flow field of the controlling stages is strongly non-periodic and non-axisymmetric,and the remarkable difference is represented to compare with traditional CFD simulation.So the result of CFD simulation has better consistent with experimentation in power plant and demonstrates that the method of CFD simulation has good precision in engineering.
出处
《热力透平》
2011年第1期11-15,61,共6页
Thermal Turbine
关键词
调节级级段
CFD全周模拟
冻结转子法
非周期性
非轴对称
流动特性
气动性能
controlling stages
full-passage CFD simulation
frozen rotor
non-periodic
non-axisymmetric
flow characteristic
aerodynamic performance
