We study a new hybrid RANS/Variational Mnltiscale LES (VMS-LES) model for bluff body flows. The simulations have been carried out rising a parallelized solver, based on a mixed element/volume formulation on unstructured grids. First, the behavior of a VMS-LES model with different subgrid scale models is investigated for the How past a circular cylinder at Reynolds number Re =3900. Second, a new strategy for Wending RANS and LES methods in a hybrid model is described and applied to the simulation of the flow around a circular cylinder at Re = 140000.
Variational Multiscale LES and hybrid RANS/LES parallel simulation of complex unsteady flows
SALVETTI, MARIA VITTORIA;CAMARRI, SIMONE;
2008-01-01
Abstract
We study a new hybrid RANS/Variational Mnltiscale LES (VMS-LES) model for bluff body flows. The simulations have been carried out rising a parallelized solver, based on a mixed element/volume formulation on unstructured grids. First, the behavior of a VMS-LES model with different subgrid scale models is investigated for the How past a circular cylinder at Reynolds number Re =3900. Second, a new strategy for Wending RANS and LES methods in a hybrid model is described and applied to the simulation of the flow around a circular cylinder at Re = 140000.File in questo prodotto:
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