Abstract
Irregularity of vortex shedding from a circular cylinder is studied experimentally. The study is based on a spectral analysis of local rms value of velocity fluctuation behind the circular cylinder. Spectral analysis of circulation of vortices obtained by both PIV and image processing of the streak line visualized by hydrogen bubbles extending from the location near the separation point of shear layer is made in order to investigate the relationship between velocity fluctuations and circulation fluctuations. From this study, long time scale periodic fluctuation, approximately 20 times the vortex shedding periodicity, is clarified. Also a good correlation between the time variation of the local rms value and that of the circulation was obtained.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.