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中文摘要：
提出了一个基于直接数值计算结果基础上的旋转失速线性稳定性模型,描述了如何从基本的Navier-Stokes方程出发,把轴流压气机流动稳定性问题转化为一个特征值问题的基本理论框架.对压气机不稳定边界的判断通过计算和检验特征值的方式来实现.给出了有限差分法和基于Gauss-Lobatto节点的谱配置方法两种数值离散的方式,并分析了这两种离散方式的收敛特性.
英文摘要：
A linear stability model of rotating stall in axial flow fan/compressors was presented based on direct numerical methods to Navier-Stokes equations,which was described as an eigenvalue problem.The inception point of rotating stall can be predicted by the model without requiring more experimental or empirical relations as input data.Two different methods,finite difference method and spectral collocation method,have been proposed to discretize the eigenvalue equation and the relevant comparison and analysis a...
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同项目期刊论文
Numerical Investigation on the Self-Induced Unsteadiness in Tip Leakage Flow for a Transonic Fan Rot
The Role of Tip Leakage Flow in Triggering Rotating Stall of a Low Speed Compressor under Inlet Dist
A new model for the prediction of turbofan noise with the effect of locally and non-locally reacting
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