A Characteristic Non-Reflecting Boundary Treatment in Lattice Boltzmann Method

KIM Dehee; KIM Hyung Min; JHON Myung S.; VINAY Ⅲ Stephen J.; BUCHANAN John

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A Characteristic Non-Reflecting Boundary Treatment in Lattice Boltzmann Method

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In lattice Boltzmann methods, disturbances develop at the initial stages of the simulation, the decay characteristics depend mainly on boundary treatment methods; open boundary conditions such as equilibrium and bounce-back schemes potentially generate uncontrollable disturbances. Excessive disturbances originate from non-physical reflecting waves at boundaries. Characteristic boundary conditions utilizing the signs of waves at boundaries which suppress these reflecting waves, as well as their implementation in the lattice Boltzmann method, are introduced herein. The performance of our novel boundary treatment method to effectively suppress excessive disturbances is verified by three different numerical experiments.

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《中国物理快报：英文版》 |2008年第6期|1964-1967|共4页
作者
KIM Dehee; KIM Hyung Min; JHON Myung S.; VINAY Ⅲ Stephen J.; BUCHANAN John;
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作者单位

Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA 15213, USA;

Division of Mechanical System Design Engineering, Kyonggi University, Suwon, Kyonggi-do, Korea;

Department of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA 15213, USA;

Bechtel Bettis Inc, West Mifflin, PA 15122, USA;

Bechtel Bettis Inc, West Mifflin, PA 15122, USA;

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中图分类物理学;
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A Characteristic Non-Reflecting Boundary Treatment in Lattice Boltzmann Method

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