Author(s)

I.E. Abdalla & Z. Yang

Abstract

Investigation of vortex shedding in transitional separating - reattaching flow on a blunt plate I.E. Abdalla & Z. Yang Department of Aeronautical and Automotive Engineering, Loughborough University, UK Abstract It has been reported in transitional and turbulent separating-reattaching flows that different vortex shedding frequencies exist, in particular the so called low-frequency flapping [I, 21. In addition it has been reported that a higher-frequency shedding also exists by Tafti and Vanka [3]. It is quite debatable if these low and high frequency vortex shedding exist in all transitional and turbulent separating-reattaching flows. It is also not clear what the working mechanisms are behind the so called low-frequency flapping as reported by several researchers. The major purpose of the paper is trying to address these issues. Large-Eddy Simulation of the transitional flow over a blunt plate held normal to a uniform stream has been carried out to study the physics of separated boundary laye

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