Flow simulation around circular cylinder at low Reynolds numbers using vortex particle method
Flow simulation around circular cylinder at low Reynolds numbers using vortex particle method
复制标题
采用涡粒子法进行低雷诺数圆柱绕流模拟
DOI：
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
I. Marchevsky
中科院分区：
文献类型：
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作者：
K. Kuzmina;I. Marchevsky
本文研究了粘性涡域法在作者的程序VM 2D中的实现算法。该代码允许模拟二维粘性不可压缩流和解决流体-结构相互作用问题。该算法的验证，即，考虑粘性效应的正确性，进行充分研究的试验问题的绕流模拟的圆柱雷诺数在20范围内。. . 200：摘要研究了圆柱的脉冲起动问题，分析了流动分离角与雷诺数的关系。结果表明，在低雷诺数（140以下）下，VM 2D数值模拟得到的流动分离角与其他研究结果吻合较好。对于较高的雷诺数，估计的分离角略有高估。
The algorithm of the Viscous Vortex Domain method implemented in the author’s code VM2D is investigated. This code allows simulating 2D viscous incompressible flows and solving fluid-structure interaction problems. The verification of the algorithm, namely, the correctness of taking into account the viscosity effect, is performed on well-studied test problems of the flow simulation around a circular cylinder for Reynolds numbers in the range 20 . . . 200: the problem of the impulse start of the circular cylinder is considered, and the dependency of the flow separation angle on the Reynolds number is investigated. The comparison shows that for low Reynolds numbers (up to 140), the flow separation angle obtained in numerical simulations by using the VM2D code is in good agreement with the results of other studies. For higher Reynolds numbers, the estimated separation angle is slightly overestimated.