Vashishtha, Sumit ; Samuel, Roshan ; Chatterjee, Anando Gopal ; Samtaney, Ravi ; Verma, Mahendra K. (2019) Large eddy simulation of hydrodynamic turbulence using renormalized viscosity Physics of Fluids, 31 (6). 065102. ISSN 1070-6631
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Official URL: http://doi.org/10.1063/1.5096335
Related URL: http://dx.doi.org/10.1063/1.5096335
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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| ID Code: | 118912 |
| Deposited On: | 04 Jun 2021 07:51 |
| Last Modified: | 04 Jun 2021 07:51 |
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