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- W811349736 abstract "In the present study, features of the flow past a circular cylinder with single longitudinal groove pattern placed on its surface were investigated. Six different rectangular groove sizes were tested for angular position of the groove from the forward stagnation point of the circular cylinder within 0°≤θ≤150°. The particle image velocimetry (PIV) technique were employed to measure flow field downstream of the cylinder immersed in a uniform flow field with the Reynolds number, Re=5000. Time-averaged flow data such as vorticity, 〈ω〉 streamline, 〈Ψ〉, streamwise, 〈u′u′〉 and transverse, 〈v′v′〉 Reynolds normal stresses, turbulent kinetic energy, TKE and RMS of streamwise, urms and transverse, vrms velocity components were obtained from PIV data to demonstrate flow features. Moreover, frequency of Karman vortex shedding was explored using single point spectral analysis. It is concluded that presence of the groove on a cylinder surface significantly affects the near wake flow structure and turbulence statistics. Karman vortex shedding frequency, fk strongly depends on the groove size. Moreover, the shear layer instability is induced on the grooved side with additional frequencies." @default.
- W811349736 created "2016-06-24" @default.
- W811349736 creator A5012596327 @default.
- W811349736 date "2015-10-01" @default.
- W811349736 modified "2023-10-02" @default.
- W811349736 title "Characteristics of flow past a circular cylinder with a rectangular groove" @default.
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- W811349736 doi "https://doi.org/10.1016/j.flowmeasinst.2015.06.028" @default.
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