Lattice Boltzmann Numerical Simulation of a Circular Cylinder

冯士德; 赵颖; 郜宪林; 季仲贞

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Lattice Boltzmann Numerical Simulation of a Circular Cylinder

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摘要

The lattice Boltzmann equation (LBE) model based on the Boltzmann equation is suitable for the numerical simulation of various flow fields. The fluid dynamics equation can be recovered from the LBE model. However,compared to the Navier-Stokes transport equation, the fluid dynamics equation derived from the LBE model is somewhat different in the viscosity transport term, which contains not only the Navier-Stokes transport equation but also nonsteady pressure and momentum flux terms. The two nonsteady terms can produce the same function as the random stirring force term introduced in the direct numerical or large-eddy vortex simulation of turbulence.Through computation of a circular cylinder, it is verified that the influence of the two nonsteady terms on flow field stability cannot be ignored, which is helpful for the study of turbulence.

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《中国物理快报：英文版》 |2002年第6期|814-817|共4页
作者
冯士德; 赵颖; 郜宪林; 季仲贞;
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作者单位

State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;

School of Mechanical Engineering, Nanjing University of Science and Technolog;

State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094;

Northchina Institute of Computing Technology, Ministry of Information Industry, Beijing 100083;

State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics. Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;

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正文语种 chi
中图分类物理学;
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Lattice Boltzmann Numerical Simulation of a Circular Cylinder

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