某型燃气轮机第5级外抽气流量估算

Evaluation of External Pumping Flow about a Certain Type of Gas Turbine of the Stage 5

针对某型燃气轮机第5级外部抽气建立计算模型及网格。根据进口总压范围及进出口压差范围进行CFD计算,得到抽气质量流量关于进出口压差的关系曲线和外部抽气通流结构的流场特性分布。

This paper builds model and grid of 5th-stage external pumping in a gas turbine. According to the inlet total pressure range and the pressure difference between the inlet and outlet range,CFD calculation is performed. We get the relationship curve of pumping gas mass flow rate on the pressure difference between the inlet and outlet,and the characteristics of flow field distribution of external pumping flow structure.