Vortex motions in stratified wake flows

The vortex wakes of obstacles (circular cylinder and sphere) moving through a linearly stratified fluid have been investigated, by means of flow visualization, at Reynolds numbers smaller than 800 and non-dimensional buoyancy frequencies smaller than 6. Vortex shedding from a horizontally suspended...

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Bibliographic Details
Published in:Fluid dynamics research 1988-09, Vol.3 (1), p.425-430
Main Author: Honji, Hiroyuki
Format: Article
Language:English
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Summary:The vortex wakes of obstacles (circular cylinder and sphere) moving through a linearly stratified fluid have been investigated, by means of flow visualization, at Reynolds numbers smaller than 800 and non-dimensional buoyancy frequencies smaller than 6. Vortex shedding from a horizontally suspended circular cylinder is suppressed when the fluid is stratified. The wake of a sphere is affected by lee waves when the Reynolds number exceeds about 200.
ISSN:0169-5983
1873-7005
1873-7005
DOI:10.1016/0169-5983(88)90104-9