LATTICE BOLTZMANN MODEL FOR SIMULATING VISCOUS COMPRESSIBLE FLOWS
LATTICE BOLTZMANN MODEL FOR SIMULATING VISCOUS COMPRESSIBLE FLOWS
复制标题
用于模拟粘性可压缩流的格子玻尔兹曼模型
DOI:
10.1142/s0129183110015178
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发表时间:
2010-03
影响因子:
1.9
通讯作者:
Tang, G. H.
中科院分区:
文献类型:
--
作者:
Wang, Y.;Tao, W. Q.;Li, Q.;He, Y. L.;Tang, G. H.
A lattice Boltzmann model is developed for viscous compressible flows with flexible specific-heat ratio and Prandtl number. Unlike the Maxwellian distribution function or circle function used in the existing lattice Boltzmann models, a polynomial kernel function in the phase space is introduced to recover the Navier–Stokes–Fourier equations. A discrete equilibrium density distribution function and a discrete equilibrium total energy distribution function are obtained from the discretization of the polynomial kernel function with Lagrangian interpolation. The equilibrium distribution functions are then coupled via the equation of state. In this framework, a model for viscous compressible flows is proposed. Several numerical tests from subsonic to supersonic flows, including the Sod shock tube, the double Mach reflection and the thermal Couette flow, are simulated to validate the present model. In particular, the discrete Boltzmann equation with the Bhatnagar–Gross–Krook approximation is solved by the finite-difference method. Numerical results agree well with the exact or analytic solutions. The present model has potential application in the study of complex fluid systems such as thermal compressible flows.
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影响因子:
4.1
作者:
Chenghai Sun
通讯作者:
Chenghai Sun
影响因子:
2.4
作者:
Chenghai Sun
通讯作者:
Chenghai Sun
影响因子:
1.8
作者:
A. Xu
通讯作者:
A. Xu
影响因子:
2.4
作者:
Kataoka, T;Tsutahara, M
通讯作者:
Tsutahara, M
DOI:
10.1103/physreve.69.056702
发表时间:
2004-05
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
T. Kataoka;M. Tsutahara
通讯作者:
T. Kataoka;M. Tsutahara