Experimental investigation of the ventilated cavitating vortex shedding using PIV-POD method

摘要：

　　The objective of this paper is to investigate ventilated cavitating vortex shedding by a high-speed particle image velocimetry (PIV) technique.The proper orthogonal decomposition (POD) is applied to identify the spatial and temporal coherent structures.The self-oscillatory periodic behaviors of the ventilated cavitation vortex shedding are obtained and the strength of vortex shedding reduced with increasing of Qv.The POD analysis demonstrates that the first and second modes give the dominant mode shapes and frequencies which are associated with the vortex shedding.The ventilated cavitation plays an important role in the first mode pairs to affect the vortex shedding.

关键词： Ventilated cavitating Flow Particle image velocimetry Proper orthogonal decomposition Vortex shedding

作者: Zhiying Wang Mindi Zhang Guoyu Wang Junkai Huang Biao Huang Deming Gao

作者单位: School of Mechanical and Vechicular Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Beijing, China

会议类型: 国际会议

会议名称: The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)

会议地点: 江苏 无锡

会议语种:英文

页码: 190-195

在线出版日期: 2016-11-11（万方平台首次上网日期，不代表论文的发表时间）