An investigation of hybrid LES/RANS models for predicting flow fields with separation. (20th November 2006)

• Record Type: Journal Article
• Authors: Abe, K.; Miyata, Y.
• Is Part Of: Progress in computational fluid dynamics. Volume 6:Number 8(2006)
• Page Start: 475
• Page End: 486
• Publication Date: 2006-11-20
• Subjects: turbulence -- large eddy simulation -- LES -- hybrid LES/RANS model -- nonlinear eddy-viscosity model -- NLEVM -- separation -- CFD -- computational fluid dynamics -- Reynolds-Averaged Navier-Stokes modelling -- near-wall stress anisotropy -- flow fields -- separation -- periodic hill flow; Fluid dynamics -- Data processing -- Periodicals; Fluid dynamics -- Mathematics -- Periodicals; 620.10640285
• Languages: English
• ISSNs: 1468-4349

Abstract

A hybrid approach connecting Large Eddy Simulation (LES) with Reynolds-Averaged Navier-Stokes (RANS) modelling in the near-wall region is studied. The present hybrid model includes an advanced non-linear eddy-viscosity formulation to more correctly resolve the near-wall stress anisotropy. To investigate the model performance for complex turbulence, the present model is applied to a periodic hill flow with massive separation. The present model provides encouraging results for further development of this kind of hybrid LES/RANS model.