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气固两相流全分辨率直接数值模拟的并行算法

PARALLEL ALGORITHM FOR FULLY RESOLVED DIRECT NUMERICAL SIMULATION OF GAS-SOLID TWO-PHASE FLOWS
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摘要 用沉浸边界法对气固两相流进行全分辨率直接数值模拟,介绍并行算法及其并行效率。考察球形颗粒的空间分辨率等对计算精度的影响,对颗粒雷诺数Rep=1~150,颗粒直径与计算网格比大于20时,该并行算法获得的计算精度较高。 We employ the immersed boundary method to carry out the fully resolved direct numerical simulation of the gas-solid two-phase flows, and introduce the parallel algorithm and its parallel efficiency as well. We also investigate the influence of spatial resolution of spherical particle on the calculation precision. The parallel algorithm achieves higher calculation accuracy when the particle Reynolds number Rep=1~150, and the ratio of the particle diameter and computation grid is greater than 20.
作者 徐磊 徐莹
出处 《计算机应用与软件》 CSCD 北大核心 2014年第10期258-261,277,共5页 Computer Applications and Software
基金 国家自然科学基金项目(10902063) 上海市科委科研计划项目(11DZ2290400)
关键词 并行计算 多相流 计算流体力学 Parallel computing Multiphase flows Computational fluid dynamics
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参考文献24

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