Tian Li1, *, Zhiyuan Dai1, Weihua Zhang1
CMES-Computer Modeling in Engineering & Sciences, Vol.122, No.2, pp. 555-570, 2020, DOI:10.32604/cmes.2020.08101
Abstract Detached eddy simulation has been widely applied to simulate the flow around
trains in recent years. The Reynolds-averaged Navier-Stokes (RANS) model for delayed
detached eddy simulation (DDES) is an essential user input. The effect of the RANS
model for DDES on the aerodynamic characteristics of a train in crosswinds is
investigated in this study. Three different DDES models are used, based on the Spalart-Allmaras model (SA), the realizable k-ε model (RKE), and the shear stress transport k-ω
model (SST). Results show that all DDES models can give relatively accurate predictions
of pressure coefficient on almost all surfaces. There are only… More >
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