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.
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页数：8
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