TURBULENCE MODELING BY NON-HYDRODYNAMIC VARIABLES

被引：18

作者：

BENZI, R

SUCCI, S

VERGASSOLA, M

机构：

[1] IST NAZL FIS NUCL,TOR VERGATA,ITALY

[2] IBM CORP,EUROPEAN CTR SCI & ENGN COMPUTAT,I-00147 ROME,ITALY

[3] UNIV ROME LA SAPIENZA,DIPARTMENTO FIS,I-00185 ROME,ITALY

来源：

EUROPHYSICS LETTERS | 1990年 / 13卷 / 08期

关键词：

TURBULENT FLOWS; CONVECTION; AND HEAT TRANSFER; FLUCTUATION PHENOMENA; RANDOM PROCESSES; AND BROWNIAN MOTION; COMPUTER SIMULATION OF STATIC AND DYNAMIC BEHAVIOR;

D O I：

10.1209/0295-5075/13/8/010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this letter we discuss how to define a lattice Boltzmann equation which reduces in the continuum limit the Navier-Stokes equations with a suitable parametrization of subgrid scale processes. In particular we study the case of 2D turbulence and employ the FCHC lattice geometry. By introducing a ghost lattice, defined in terms of nonhydrodynamic fields, we obtain the Navier-Stokes equations with the anticipated vorticity scheme. Our approach might be generalized to other subgrid parametrizations and to the case of Boolean variables.

引用

页码：727 / 732

页数：6

共 9 条

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EUROPHYSICS LETTERS, 1990, 13 (05) :411-416

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