A Review of Some Key Issues in CFD-Based Throughflow Simulation

Throughflow simulation method is the backbone of compressor design and analysis. The CFD-based throughflow is a method developed in the recent decades. Comparisons between traditional throughflow method and CFD-based throughflow method are concerned in the present paper, and especially the development of the CFD-based method has been summarized. Some key issues of the CFD-based method are present. Modeling of the discontinuity model at leading and trailing edge, the flow losses and deviation angle are three key issues of the CFD-based method. Empirical flow losses and deviation angle models may not be accurate for advanced compressor throughflow simulation. New method of getting new empirical model is thus discussed. Four discontinuity models, the automatic incidence correlation model, the momentum flux discontinuity model, actuator disk model, and arbitrary discontinuity breakdown model, are presented, compared and the scope of application of each are discussed.