Experimental Study of Slit Cylinder Vortex Shedding in Circulating Water Channel

摘要：

This paper mainly researched the influence of slit-vent modification on the flow field variation of a circular cylinders wake flow and the modulating effect on vortex shedding frequency. Experiment contents contained qualitative flow visualization and quantitative measurements. A huge amount of PIV data was acquired and evaluated to obtain the instantaneous flow structure as well as the timeaveraged feature of wake flow past both slit circular cylinder and baseline circular cylinder. Meanwhile, complete periodical evolution of vortex generation and shedding in the near wake flow was analyzed, and the vortex shedding frequency alteration under different water channel speeds was also studied. The results of flow visualization revealed that, the vortex shedding frequency of slit cylinder was faster than baseline cylinder. It demonstrated that the slit structure of cylinder enhanced the intension of wake flow variation.

关键词： Slit Cylinder PIV Measurement Circulating Water Channel Shedding Frequency

作者: Wang Junwei Yang Jinwen He Yi Bao Feng

作者单位: Department of Aeronautics Xiamen University Xiamen, China

会议类型: 国际会议

会议名称: 2012 International Conference on Measurement,Information and Control(2012测量、信息与控制国际会议 ICMIC2012)

会议地点: 哈尔滨

会议语种:英文

页码: 225-229

在线出版日期: 2012-05-18（万方平台首次上网日期，不代表论文的发表时间）