We study a new hybrid RANS/Variational Multiscale LES (VMS-LES) model for bluff body flows. The simulations have been carried out using a parallelized solver, based on a mixed \textcolor{Black}{finite} element/\textcolor{Black}{finite} volume formulation on unstructured grids. Parallel performances are analysed. The behavior of a VMS-LES model with different subgrid scale models is investigated for the flow past a circular cylinder at Reynolds number {\it Re} =3900. Second, a new strategy for blending RANS and LES methods in a hybrid model is described and applied to the simulation of the flow around a circular cylinder at {\it Re} = 140000.

Parallel Simulation of Complex Unsteady Flows with Variational Multiscale LES and Hybrid RANS/LES

SALVETTI, MARIA VITTORIA;CAMARRI, SIMONE;
2009-01-01

Abstract

We study a new hybrid RANS/Variational Multiscale LES (VMS-LES) model for bluff body flows. The simulations have been carried out using a parallelized solver, based on a mixed \textcolor{Black}{finite} element/\textcolor{Black}{finite} volume formulation on unstructured grids. Parallel performances are analysed. The behavior of a VMS-LES model with different subgrid scale models is investigated for the flow past a circular cylinder at Reynolds number {\it Re} =3900. Second, a new strategy for blending RANS and LES methods in a hybrid model is described and applied to the simulation of the flow around a circular cylinder at {\it Re} = 140000.
2009
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/128411
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact