Large eddy simulation of hydrodynamic turbulence using renormalized viscosity

被引：2

作者：

Vashishtha, Sumit ^{[1
]}

Samuel, Roshan ^{[2
]}

Chatterjee, Anando Gopal ^{[1
]}

Samtaney, Ravi ^{[3
]}

Verma, Mahendra K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

[2] Indian Inst Technol, Dept Mech Engn, Kanpur 208016, Uttar Pradesh, India

[3] King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 23955, Saudi Arabia

来源：

PHYSICS OF FLUIDS | 2019年 / 31卷 / 06期

关键词：

MAGNETOHYDRODYNAMIC TURBULENCE; ENERGY-TRANSFER; MODELS; FLUID; SCALES;

D O I：

10.1063/1.5096335

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

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 512(3) and 256(3) grids and LES on 32(3), 64(3), and 128(3) grids with the same initial conditions in the resolved scales for a flow with Taylor Reynolds number Re-lambda = 210. We observe good agreement between LES and DNS results for the temporal evolution of turbulence kinetic energy E-u(t), kinetic energy spectrum E-u(k), and kinetic energy flux Pi(u)(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.

引用

页数：8

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