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An unsteady incompressible Navier–Stokes solver for large eddy simulation of turbulent flows
Author(s) -
Kim WonWook,
Me Suresh
Publication year - 1999
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/(sici)1097-0363(19991130)31:6<983::aid-fld908>3.0.co;2-q
Subject(s) - solver , large eddy simulation , turbulence , compressibility , turbulence kinetic energy , direct numerical simulation , computational fluid dynamics , turbulence modeling , mathematics , detached eddy simulation , mechanics , navier–stokes equations , physics , statistical physics , computer science , reynolds averaged navier–stokes equations , mathematical optimization , reynolds number
An unsteady incompressible Navier–Stokes solver that uses a dual time stepping method combined with spatially high‐order‐accurate finite differences, is developed for large eddy simulation (LES) of turbulent flows. The present solver uses a primitive variable formulation that is based on the artificial compressibility method and various convergence–acceleration techniques are incorporated to efficiently simulate unsteady flows. A localized dynamic subgrid model, which is formulated using the subgrid kinetic energy, is employed for subgrid turbulence modeling. To evaluate the accuracy and the efficiency of the new solver, a posteriori tests for various turbulent flows are carried out and the resulting turbulence statistics are compared with existing experimental and direct numerical simulation (DNS) data. Copyright © 1999 John Wiley & Sons, Ltd.