Downstream-Conditioned Maximum Entropy Method for Exit Boundary Conditions in the Lattice Boltzmann Method

被引：0
|
作者：
Dottori, Javier A. [1 ,2 ]
Boroni, Gustavo A. [1 ,2 ]
Clausse, Alejandro [2 ,3 ]
机构：
[1] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina
[2] Natl Univ Cent Buenos Aires, RA-7000 Tandil, Argentina
[3] CNEA CONICET, RA-1429 Buenos Aires, DF, Argentina
来源：
MATHEMATICAL PROBLEMS IN ENGINEERING | 2015年 / 2015卷
关键词：
FLOW;
D O I：
10.1155/2015/159418
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A method for modeling outflow boundary conditions in the lattice Boltzmann method (LBM) based on the maximization of the local entropy is presented. The maximization procedure is constrained by macroscopic values and downstream components. The method is applied to fully developed boundary conditions of the Navier-Stokes equations in rectangular channels. Comparisons are made with other alternative methods. In addition, the new downstream-conditioned entropy is studied and it was found that there is a correlation with the velocity gradient during the flow development.
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页数：12
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