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| A new approach for treating curved boundary in Lattice Boltzmann method based on interpolation |
| Received:May 09, 2007 |
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| DOI：10.7511/jslx20094011 |
| KeyWord:Meshless method meshless local Petrov-Galerkin method shell weak form of equivalent integration for differential equation moving least square |
| Author | Institution |
| 刘演华 |
浙江大学 力学系流体工程研究所,杭州 |
| 林建忠 |
浙江大学 力学系流体工程研究所,杭州 |
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| Abstract: |
| A new curved boundary treatment is proposed for the Lattice Boltzmann method. With Cartesian coordinate, it is a combination of the exising treatment of boundary condition and immersed boundary condition. It adopts an interpolation to evaluate the node velocity near the physical wall, which provides at least secondary-order accuracy both in velocity and distribution fields. Once the node velocity is given, a variety of boundary treatment proposed previously can be applied to these nodes. Numerical test shows that it is more stable and has secondary-order accuracy. |
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