Numerical simulation of low-Reynolds number flows past two tandem cylinders of different diameters
Numerical simulation of low-Reynolds number flows past two tandem cylinders of different diameters作者机构:College of Environmental Science and EngineeringSuzhou University of Science and Technology College of Water Conservancy and Hydropower EngineeringHohai University College of EnvironmentHohai University
出 版 物:《Water Science and Engineering》 (水科学与水工程(英文版))
年 卷 期:2013年第6卷第4期
页 面:433-445页
核心收录:
学科分类:080703[工学-动力机械及工程] 0707[理学-海洋科学] 08[工学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0813[工学-建筑学] 0824[工学-船舶与海洋工程] 0814[工学-土木工程]
基 金:supported by the National Natural Science Foundation of China(Grant No.40871050)
主 题:two tandem cylinders vortex shedding drag force lift force numerical simulation
摘 要:The flow past two tandem circular cylinders of different diameters was simulated using the finite volume method. The diameter of the downstream main cylinder (D) was kept constant, and the diameter of the upstream control cylinder (d) varied from 0.1D to D. The studied Reynolds numbers based on the diameter of the downstream main cylinder were 100 and 150. The gap between the control cylinder and the main cylinder (G) ranged from 0.1D to 4D. It is concluded that the gap-to-diameter ratio (G/D) and the diameter ratio between the two cylinders (d/D) have important effects on the drag and lift coefficients, pressure distributions around the cylinders, vortex shedding frequencies from the two cylinders, and flow characteristics.