A RESCALED V2-F MODEL: FIRST APPLICATION TO SEPARATED AND IMPINGING FLOWS
Résumé
The ability of the rescaled version of the υ^2-f model, designed to improve the predictions in channel flows, to reproduce pressure driven separation and impinging flows is investigated. First, it is shown that the recalibration of the coefficients does not suppress the gain obtained previously in channel flows concerning the prediction of the mean velocity and υ^2 profiles, and the evolution of the friction coefficient with the Reynolds number. The original and rescaled υ^2-f models are then applied to a plane asymmetric diffuser and an impinging jet, which are known for being well reproduced by the original model. The rescaled model globally gives very similar results in these flows. However, room for improvement exists in predicting the reattachment region in the diffuser and the Nusselt number distribution in the impinging jet.
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