| 格子玻尔兹曼方法(LBM)及其在微通道绕流中的应用 |
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| 引用本文： | 冯俊杰,孙冰,姜杰,徐伟,石宁.格子玻尔兹曼方法(LBM)及其在微通道绕流中的应用[J].安全．健康和环境,2019,19(1):7-12. |
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| 作者姓名： | 冯俊杰 孙冰 姜杰 徐伟 石宁 |
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| 作者单位： | 中国石化青岛安全工程研究院化学品安全控制国家重点实验室,山东青岛,266071;中国石化青岛安全工程研究院化学品安全控制国家重点实验室,山东青岛,266071;中国石化青岛安全工程研究院化学品安全控制国家重点实验室,山东青岛,266071;中国石化青岛安全工程研究院化学品安全控制国家重点实验室,山东青岛,266071;中国石化青岛安全工程研究院化学品安全控制国家重点实验室,山东青岛,266071 |
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| 摘 要： | 介绍了格子玻尔兹曼方法基本理论与计算方法,并建立了D2Q9计算模型,对宏观尺度及微通道中的非稳态绕流进行了数值模拟,得到了绕流过程的速度分布和涡量分布等信息,对流场结构、固体阻力、尾涡脱落等变化规律进行了分析。结果表明,格子玻尔兹曼方法以其计算稳定、效率高等优势能够应用于微反应器领域的数值模拟;同等液相停留时间条件下,微反应器中的圆柱绕流湍动程度明显降低,未形成周期性涡流,流动更加均匀稳定,有助于实现化学反应的精确控制。
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| 关 键 词： | 格子玻尔兹曼(LBM) 微反应器 微通道 绕流 |
Numerical Simulation of Flow around a Cylinder in Micro-Channel by the Lattice Boltzmann Method |
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| Feng Junjie,Sun Bing,Jiang Jie,Xu Wei,Shi Ning.Numerical Simulation of Flow around a Cylinder in Micro-Channel by the Lattice Boltzmann Method[J].Safety Environment Health,2019,19(1):7-12. |
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| Authors: | Feng Junjie Sun Bing Jiang Jie Xu Wei Shi Ning |
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| Institution: | (State Key Laboratory of Safety and Control for Chemicals,SINOPEC Research Institute of Safety Engineering,Shandong,Qingdao,266071) |
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| Abstract: | The lattice Boltzmann method,its most important model lattice BGK and the boundary condition were introduced briefly.Using LBM,numerical simulation of flow around a cylinder in micro-channel was computed.The results included the velocity and vorticity distribution,the flow resistance,vortex formation and periodic shedding.The results showed that LBM had a stable and reliable computation performance and high efficiency,and could be used to investigate the fluid dynamics in micro-reactors.The turbulence around the cylinder in the micro-reactor decreased,and no periodic eddy current was formed.The flow was more uniform and stable,which was helpful to control the chemical reaction accurately. |
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| Keywords: | Lattice Boltzmann Method(LBM) microreactor microchannel flow around |
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