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吸水口前自由表面旋涡的LBM模拟 被引量:7

LBM simulation of free surface vortex in front of suction inlet
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摘要 作者采用单相自由面格子Boltzmann模型,数值模拟了水槽底部吸水装置在科氏力诱导下自由表面旋涡的生成和演化过程。计算结果表明本文采用的方法能够较好地捕捉自由表面旋涡流动的大幅度变化的气液两相界面,同时通过对自由表面旋涡生成与演化过程中不同水平面的速度矢量分布,切向速度、径向速度、环量以及涡核半径的变化规律的分析,说明计算结果与实验结果是一致的。 The formation and evolution process of the free surface vortex induced by the Coriolis force in front of suction inlet was simulated by using the single-phase free surface lattice Boltzmann model. The numerical simulation results show that the method could preferably capture the free surface vortex flow with substantial change in gas-liquid two-phase interface. Meanwhile by analyzing the variation of the velocity vector in different horizontal plane, the tangential velocity, the radial velocity, the circulation and the vortex core radius with the formation and evolution of the free surface vortex, it shows that the LBM simulation results are consistent with experimental results.
出处 《水动力学研究与进展(A辑)》 CSCD 北大核心 2010年第5期676-682,共7页 Chinese Journal of Hydrodynamics
基金 国家自然科学基金(10772108) 上海市重点学科建设项目(Y0103)资助
关键词 吸水口 自由表面旋涡 科氏力 格子BOLTZMANN方法 数值模拟 suction inlet free surface vortex Coriolis force lattice Boitzmann method numerical simulation
作者简介 陈红勋(196-),男,江苏镇江人,研究员,博士,博导.E-mail:chenhx@shu.edu.cn
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