A CELL BOUNDARY ELEMENT METHOD APPLIED TO LAMINAR VORTEX-SHEDDING FROM ARRAYS OF CYLINDERS IN VARIOUS ARRANGEMENTS
A CELL BOUNDARY ELEMENT METHOD APPLIED TO LAMINAR VORTEX-SHEDDING FROM ARRAYS OF CYLINDERS IN VARIOUS ARRANGEMENTS
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DOI：
10.1006/jfls.1999.0275
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发表时间：
2000-04
影响因子：
3.6
通讯作者：
T. Farrant;M. Tan;W. Price
中科院分区：
文献类型：
--
作者：
T. Farrant;M. Tan;W. Price
本文采用单元边界元法求解二维不可压Navier-Stokes方程，研究了圆柱绕流的旋涡脱落问题。该方法是一种混合格式，在每个流体单元中使用边界元法离散，并使用有限元程序来求解全局流体问题。本文计算了四个等直径等间距圆柱和两个圆柱的二维绕流特性和相互作用力。人们发现，行为，如同相涡脱落，反相涡脱落和同步涡脱落，这是众所周知的特性，为流动过去的安排，两个圆柱体，也存在于这些更复杂的流动。这些流动问题的应用程序的细胞边界元法，使用非结构化流体域网格理想化，证明是简单的，不需要修改的机构的数量或形状的变化。
A cell boundary element method is used to solve the two-dimensional incompressible Navier–Stokes equation for vortex-shedding flows around arrays of cylinders. The method is a hybrid scheme using a boundary element method in each fluid cell discretization with a finite element procedure to solve for the global fluid problem. Computations are presented of two-dimensional flow characteristics and interactive forces associated with flows around four equispaced cylinders of equal diameter, and two cylinders, one with circular cross-section and the other elliptical. It was found that behaviour such as in-phase vortex-shedding, anti-phase vortex shedding and synchronized vortex shedding, which are well-known characteristics for flows past arrangements of two circular cylinders, were also present in these more complicated flows. The application of the cell boundary element method to these flow problems, using an unstructured fluid domain mesh idealization, proved straightforward and required no modification for variation of the number of bodies or their shape.