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	低Reynolds数下单排方柱绕流尾迹涡型的LBM模拟
	陈永丽 ; 朱克勤 ; CHEN Yongli ; ZHU Keqin
	2010-06-07 ; 2010-06-07
关键词	射流合并 方柱绕流 叉形分叉 格子Boltzmann方法 confluence of jets flow past square cylinder pitchfork bifurcation lattice Boltzmann method O358
其他题名	LBM simulations of wake vortex pattern at low Reynolds numbers behind a row of square cylinders
中文摘要	针对工程中遇到的周期柱体绕流问题,采用格子Boltzmann方法(LBM)对低Reynolds数下单排周期排列方柱的定常绕流进行数值模拟,详细分析了柱体后面的尾迹涡型随着Reynolds数的变化情况,并通过对不同Reynolds数下尾迹涡型结构的分析,得到了二射流、三射流和四射流发生合并现象的临界Reynolds数,其中二射流出现合并的临界Reynolds数与文献的数值模拟结果一致,三射流和四射流出现合并的临界Reynolds数则偏大,但更接近实验结果。; The steady flow at low Reynolds numbers past a single row of square cylinders was numerically studied using the lattice Boltzmann method(LBM)to solve the problems often encountered in engineering applications,where flows around periodic cylinders occur.The vortex patterns of the wake agree well with the experimental results in the references,and corresponding wakes at different Reynolds numbers were given.The critical Reynolds numbers were obtained by analyzing the structure of vortex pattern behind the cylinders,beyond which two jets,three jets and four jets joined together,respectively.The critical Reynolds number of two jets joining together is consistent with the result in the reference,while those of three jets and four jets are larger than the numerical results in the reference,but closer to the experimental reports.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/37759]
专题	清华大学
推荐引用方式 GB/T 7714	陈永丽,朱克勤,CHEN Yongli,等. 低Reynolds数下单排方柱绕流尾迹涡型的LBM模拟[J],2010, 2010.
APA	陈永丽,朱克勤,CHEN Yongli,&ZHU Keqin.(2010).低Reynolds数下单排方柱绕流尾迹涡型的LBM模拟..
MLA	陈永丽,et al."低Reynolds数下单排方柱绕流尾迹涡型的LBM模拟".(2010).

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