计及气流展向掺混影响多级轴流压气机通流数值计算

THROUGHFLOW NUMERICAL CALCULATIONS INCLUDING INFLUENCE OF SPANWISE MIXING IN A MULTISTAGE AXIAL FLOW COMPRESSOR

一、前言 考虑气流展向掺混影响已成为多级轴流压气机气动设计准三元方法和系统中不可缺少的一个部分。Adkins和Gallimore以不同的模型对掺混影响进行了数值模拟,得到了相同的结果。Gallimore的计算是在实验证实文献[3]的模型基础上进行的。本文根据文献[2、3]的紊流扩散的掺混模型,着眼于高负荷亚、跨音速压气机流动适用的情况,导出了和文献[2]不同的速度梯度和转焓的计算式,给出了计算方法。

Based on the that the mixing was modelled as a turbulent diffusion process, this paper gives the computing formulas and method to calculate the throughflow including influence of spanwise mixing for the flow situations of the subsonic and transonic multistage axial flow compressor with higher aerodynamic loading stages. And the initial calculating analysis of the flow through a realistic core compressor with transonic stages has been carried out.