NUMERICAL ANALYSIS OF COMPRESSOR CASCADE FLOW WITH NOVEL TURBULENCE MODELS

An explicit N-S solver has been written at the option of one of three turbulence models:Standard K-ε model is an implicit K-ε model coupled with the explicit N-S solver in a novel way which takes account of multiple time scales by adding an extra term to the dissipation equation,and turbulence model based on RNG method which takes account of unbalance effect by adding an extra term to the dissipation equation.The code has been applied to numerical analysis of the flow in the compressor cascade.Three solutions obtained with the three correspondent turbulence models are compared with the experimental results by Flot,R and Papalion,K.It is shown that the results with later two turbulence models become closer to the experimental results.