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首页> 外文期刊>International journal of nanomechanics science and technology >SIMULATION OF MICROFLOWS USING THE LATTICE BOLTZMANN METHOD ON NONUNIFORM MESHES
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SIMULATION OF MICROFLOWS USING THE LATTICE BOLTZMANN METHOD ON NONUNIFORM MESHES

机译：用格子Boltzmann方法模拟非均匀网格上的微流

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摘要

In the recent past, the lattice Boltzmann method (LBM) has attracted considerable attention in science and engineering as a potential computational tool for solving a large class of problems such as flows in microgeometries. In this work, a compressible LBM in conjunction with the ex plicit Taylor-series expansion and least squares-based lattice Boltzmann method (TLLBM) is used to simulate two-dimensional microflows. The TLLBM is based on the standard LBM with an in troduction of the Taylor-series expansion and least squares approach. The final equation is in an explicit form and essentially has no restriction on mesh structure and lattice model. To validate the method, both a lid-driven microcavity flow and microchannel flow at different Knudsen num bers are considered. Numerical results obtained by this method agree very well with the data available in the literature.
机译：在最近的过去，格子玻尔兹曼方法（LBM）作为解决许多问题（如微观几何中的流动）的潜在计算工具，在科学和工程领域引起了相当大的关注。在这项工作中，可压缩的LBM与泰勒级数展开式和基于最小二乘的格子Boltzmann方法（TLLBM）结合使用，来模拟二维微流。 TLLBM基于标准LBM，并引入了泰勒级数展开和最小二乘法。最终方程为显式形式，对网格结构和晶格模型基本上没有限制。为了验证该方法，同时考虑了盖驱动微腔流量和不同努数下的微通道流量。通过这种方法获得的数值结果与文献中的数据非常吻合。

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