| 基于多松弛格子玻尔兹曼的弯道水流三维数值模拟 |
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| 引用本文： | 丁全林,王玲玲,汪德爟,方政.基于多松弛格子玻尔兹曼的弯道水流三维数值模拟[J].水科学进展,2012,23(4):523-528. |
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| 作者姓名： | 丁全林 王玲玲 汪德爟 方政 |
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| 作者单位： | 1.河海大学力学与材料学院, 江苏南京 210098; |
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| 基金项目： | 中央高校基本科研业务费专项资金资助项目(2010B07714);国家自然科学基金资助项目(51179058)~~ |
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| 摘 要： | 为研究弯道水流现象并且拓展格子玻尔兹曼(Lattice Boltzmann Method,LBM)在水利工程领域的应用,建立了弯道水流的三维多松弛LBM演进模型,其中包括水流自由表面模拟、弯曲固壁边界处理以及紊流模型耦合求解等关键技术。应用该模型模拟研究了不同流量下U型弯道的水流状态,得到了水位、最大水深平均流速以及紊动能等参数的分布规律。分析和实践表明,该模型能较好地模拟三维弯道水流现象。
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| 关 键 词： | 多松弛格子玻尔兹曼 流体 弯道水流 紊流模型 |
| 收稿时间： | 2011-09-26 |
Three-dimensional numerical simulation of bend flow based on the multi-relaxation times lattice Boltzmann method |
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| DING Quan-lin
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WANG Ling-ling
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WANG De-guan
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FANG Zheng.Three-dimensional numerical simulation of bend flow based on the multi-relaxation times lattice Boltzmann method[J].Advances in Water Science,2012,23(4):523-528. |
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| Authors: | DING Quan-lin WANG Ling-ling WANG De-guan FANG Zheng |
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| Affiliation: | 1.College of Mechanics and Materials, Hohai University, Nanjing 210098, China;2.Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, Hohai University, Nanjing 210098, China;3.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | For researching bend flows,as well as expanding the application of the Lattice Boltzmann Method(LBM) in the water conservancy field,a 3D multi-relaxation times LBM model,which includes free surface simulation,curved boundary treatment and turbulence models solving,was established.U-type bend flows under different flow rates were simulated,and the distributions of water level,maximum depth-averaged velocities and turbulent kinetic energy were obtained.Both the theoretical analysis and the simulation result indicate that the model in the paper can adequately simulate 3D bend flows. |
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| Keywords: | multi-relaxation times lattice Boltzmann method fluid flow bend flow turbulence model |
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