Assessment of Simple RANS Turbulence Models for Stall Delay Applications at Low Reynolds Number

摘要

This paper assesses the performance of three two-equation turbulence models viz. the SST k-ω, the RNG and realizable k-ε for the simulations of a rotating blade in a wind tunnel experiment where k, ε and ω are turbulent kinetic energy, dissipation rate and specific dissipation respectively. The experiments showed the stall-delay phenomenon at the inboard of the rotating blade at a Reynolds number of 4800. This trend of suction peaks was captured by all three turbulence models albeit not matching the experimental coefficient of pressure accurately. All three models also showed radial flow at the inboard which is consistent with the experiments while the SST predicted the least k at low wall values.