A two-equation turbulence model that can adjust itself from RANS to LES regimes is constructed using the renormalization group. When the grid-spacing gets to coarse for LES, the model tends to a RANS model. In well-resolved regions the model results in a LES subgrid-model. The renormalization group procedure leads to transport-equations that are dependent on the filterwidth and contain no adjustable constants.

Volume Subject Area:
Turbulent Flows
Topics:
Modeling, Renormalization (Physics), Reynolds-averaged Navier–Stokes equations, Turbulence
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Copyright © 2002
 by ASME
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