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A Flowfield Calculation around Two Circular Cylinders in Various Arrangements by a Discrete Vortex Method  

노기덕 (경상대학교 기계항공공학부)
박지태 (경상대학교 대학원 기관공학과)
강호근 (경상대학교 기계항공공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.27, no.3, 2003 , pp. 365-372 More about this Journal
Abstract
The Flow patterns around two cylinders in various arrangements were studied by a discrete vortex method. The flow for the surface of each cylinder was represented by arranging bound vortices at adequate intervals. The viscous diffusion of fluid was represented by the random walk method. The vortex distributions. streaklines. timelines and velocity vectors around two cylinders were calculated for centre-to-centre pitch ratios of P/D=1.5 and 2.5, attack ang1es of $a=0^{circ}, 30^{circ}, 60^{circ} and 90^{\circ}$. and Reynolds number of Re= 1200. The results of simulation correspond to the photographs by flow visualization and the flow intereference between two cylinders in various arrangements were clearly visualized by a numerical simulation.
Keywords
Fluid Dynamics; Numerical Analysis; Discrete Vortex Method; Flow Visualization; Two Cylinders;
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