Numerical calculation of separated flow past a circular cylinder using panel technique |
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Authors: | A Roy |
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Affiliation: | a Department of Space Engineering and Rocketry, Birla Institute of Technology, Mesra, Ranchi 835 215, India b Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur 721 302, India |
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Abstract: | In the present investigation, a potential flow model based on panel technique, has been developed for calculation of bubble type separated flow past smooth and rough circular cylinder. Free vortex lines are assumed to emanate from the points of separation that converge downstream of the body. The converged wake shape is iteratively obtained by integrating the velocity vectors at the collocation points on the wake panels. Effect of vorticity dispersion in the wake, which plays the dominant role in the flow separation phenomena, is incorporated in the flow model. It has been observed that separated flow past circular cylinder for different Reynolds number and surface roughness can be calculated with reasonable accuracy with appropriate values of vorticity dispersion factor (λ). |
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Keywords: | Separated flow Smooth and rough circular cylinder Panel technique Vorticity dispersion |
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