用Lattice Boltzmann方法模拟陶瓷过滤器基体内的流体流动
Lattice Boltzmann Simulation on Flow in Porous Medium of Ceramic Filter
本文将Lattice Boltzmann方法用于研究陶瓷过滤器基体内的三维气体流动。简化后的多孔介质结构由计算机随机生成。文中给出了压降随表观速度的变化关系曲线，并将其与Darcy定律的分析结果进行了对比，证明了程序的正确性。同时分析了多孔介质内不同孔道处的速度分布，结果表明对于一个固定的孔道，在接近其中心轴线的位置，速度达到最大值，且孔道中速度沿径向近似呈抛物线分布。此外，给出了达西数与孔隙率和颗粒平均直径的关系，结果表明，达西数随孔隙率和颗粒平均直径的增大沿二次曲线增加。
he lattice Boltzmann method (LBM) is applied to simulate three dimensional flows through ceramic matrixes. The simplified structures are generated randomly by computer. As a test of the lattice Boltzmann code, the relation between pressure drop and superficial velocity in porous medium is obtained which agrees well with Darcy’s Law. Local velocities of different pores are also analyzed. The velocity distributions are approximate to parabolas. Calculation results show that the Darcy number increases along quadric curves with the increase of sphere diameter and porosity.
姬忠礼、孙梅玉、陈鸿海
力学材料科学工程基础科学
陶瓷过滤器，Lattice Boltzmann Method，三维流动，数值计算
eramic Filter Media Lattice Boltzmann Method Three dimensional Flow Simulation.
姬忠礼,孙梅玉,陈鸿海.用Lattice Boltzmann方法模拟陶瓷过滤器基体内的流体流动[EB/OL].(2007-12-24)[2025-08-04].http://www.paper.edu.cn/releasepaper/content/200712-631.点此复制
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