| LATTICE BOLTZMANN METHOD WITH DOUBLE MESHES |
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| 作者姓名： | Wang Xing yong Suo Li sheng College of Water Conservancy and Hydropower Engineering Hohai University Nanjing ChinaCheng Yong guang School of Water Resources and Hydropower Wuhan University Wuhan ChinaLiu De youCollege of Water Conservancy and Hydropower Engineering Hohai University Nanjing China |
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| 作者单位： | Wang Xing yong，Suo Li sheng College of Water Conservancy and Hydropower Engineering，Hohai University，Nanjing 210098，ChinaCheng Yong guang School of Water Resources and Hydropower，Wuhan University，Wuhan 430072，ChinaLiu De youCollege of Water Conservancy and Hydropower Engineering，Hohai University，Nanjing 210098，China |
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| 基金项目： | ThisworkwassupportedbytheNationalNaturalscienceFoundationofChina (GrantNo :5 0 0 0 90 0 7) |
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| 摘 要： | 1 . ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｒｅｃｅｎｔ ｙｅａｒｓ ,ｔｈｅｏｒｙａｎｄａｐｐｌｉｃａｔｉｏｎｓｏｆＬａｔｔｉｃｅＢｏｌｔｚｍａｎｎｍｅｔｈｏｄ (ＬＢＭ )ｈａｖｅｍａｄｅｒａｐｉｄ ｐｒｏｇｒｅｓｓ ,ｍａｋｉｎｇＬＢＭｃｏｍｐｅｔｉｔｉｖｅｔｏｔｈｅｃｏｎｖｅｎｔｉｏｎａｌａｐｐｒｏａｃｈｅｓｉｎＣｏｍｐｕｔａｔｉｏｎａｌＦｌｕｉｄＤｙｎａｍｉｃｓ (ＣＦＤ )ａｎｄａｎａｌｔｅｒｎａｔｉｖｅｗａｙｔｏｓｉｍｕ ｌａｔｅｔｈｅｆｌｕｉｄｆｌｅｌｄ1] .ＴｈｅｋｅｙｉｄｅａｂｅｈｉｎｄＬＢＭｉｓｔｈ…
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LATTICE BOLTZMANN METHOD WITH DOUBLE MESHES |
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| Wang Xing yong,Suo Li sheng College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing ,ChinaCheng Yong guang School of Water Resources and Hydropower,Wuhan University,Wuhan ,ChinaLiu De youCollege of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing ,China.LATTICE BOLTZMANN METHOD WITH DOUBLE MESHES[J].Journal of Hydrodynamics,2003,15(1). |
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| Authors: | WANG Xing-yong Suo Lis-heng CHENG Yong-guang LIU Deyou |
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| Abstract: | To improve the computational efficiency of Lattice Boltzmann Method (LBM), in this paper, LBM with doule meshes is presented, whose basic ideology is borrowed from the Finite Difference Method (FDM). Taking merits of both the coarse and fine meshes, the presented method speeds up the convergence, and increases the computational efficiency. Three numerical examples, two dimensional Poiseuille flow, backward facing step flow and flow in channel with a rectangular slot, are illustated, proving that time cost by double mesh LBM is much less than that by commonly used uniform mesh LBM, and the results obtained are correct and dependable. |
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| Keywords: | Lattice Boltzmann Method(LBM) flow field double meshes computational efficiency |
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