Large eddy simulation of hydrodynamic turbulence using renormalized viscosity

Sumit Vashishtha, Roshan Samuel, Anando Gopal Chatterjee, Ravi Samtaney, Mahendra K. Verma

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We employ renormalized viscosity to perform large eddy simulations (LESs) of decaying homogeneous and isotropic turbulence in a cubical domain. We perform a direct numerical simulation (DNS) on 5123 and 2563 grids and LES on 323, 643, and 1283 grids with the same initial conditions in the resolved scales for a flow with Taylor Reynolds number Reλ = 210. We observe good agreement between LES and DNS results for the temporal evolution of turbulence kinetic energy Eu(t), kinetic energy spectrum Eu(k), and kinetic energy flux Πu(k). Also, the large-scale structures of the flow in LES are similar to those in DNS. These results establish the suitability of our renormalized viscosity scheme for LES.
Original languageEnglish (US)
Pages (from-to)065102
JournalPhysics of Fluids
Volume31
Issue number6
DOIs
StatePublished - Jun 2019

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