Numerical visualization of oscillatory flow around a circular cylinder at Re = 200 and KC = 20: An aperiodic flow case
Numerical visualization of oscillatory flow around a circular cylinder at Re = 200 and KC = 20: An aperiodic flow case
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DOI：
10.1002/(sici)1099-0887(199803)14:3
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发表时间：
1998-03
影响因子：
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通讯作者：
G. Iliadis;P. Anagnostopoulos
中科院分区：
文献类型：
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作者：
G. Iliadis;P. Anagnostopoulos
本文给出了雷诺数为200、Keulegan-Carpenter数为20时圆柱绕流粘性振荡的数值研究结果。采用有限元法求解Navier-Stokes方程，其中流函数和涡量为场变量。计算揭示了一种复杂的流动模式，在该模式下，流动不是周期性的，而是在不同的振荡周期内在不同的模式之间切换。采用数值流动显示的方法对不同循环下的旋涡脱落模式进行了识别。从解中推导出水动力的轨迹，并计算出顺列力的水动力系数。© 1998 John Wiley & Sons，Ltd。
The results of a numerical study of the viscous oscillating flow around a circular cylinder at Reynolds number=200 and Keulegan–Carpenter number=20 are presented. The finite element method was used for the solution of the Navier–Stokes equations, in the formulation where the streamfunction and the vorticity are the field variables. The computation revealed a complicated flow pattern at which the flow is not periodic but switches between different modes at various oscillation cycles. The vortex shedding patterns occurring at different cycles were identified by means of numerical flow visualization. The traces of the hydrodynamic forces were derived from the solution, and the hydrodynamic coefficients of the in-line force were evaluated. © 1998 John Wiley & Sons, Ltd.