Stratified Stokes flow over a cylinder
ORAL
Abstract
A body that does not permit density gradients on its boundary when immersed in a stratified fluid generates a localized flow around it. The flow velocity in such a configuration is usually small and the flow generated around the body belongs to the Stokes regime with asymptotically small Reynolds numbers. In this talk I will present features of Stokes flow generated around a cylinder in the low Reynolds number regime in a stratified fluid. In the low Peclet limit a Greens function approach will be used to obtain a semi-analytical solution of the governing equations. The semi-analytical solution will then be used to discuss the far field decay rates of the flow field and the density field. Contrary to the flow over a cylinder in the unstratified Stokes regime, stratified Stokes flow over a cylinder is characterized by algebraic decay of the velocity in the far field.
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Presenters
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Jim Thomas
University of North Carolina at Chapel H, University of North Carolina at Chapel Hill
Authors
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Jim Thomas
University of North Carolina at Chapel H, University of North Carolina at Chapel Hill
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Roberto Camassa
University of North Carolina at Chapel Hill
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Robert Hunt
University of North Carolina at Chapel H, University of North Carolina at Chapel Hill