Near wakes of a circular cylinder in stratified flows

Y. Ohya, Y. Nakamura

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6 Citations (Scopus)


Near wakes of a circular cylinder in linearly stratified flows are experimentally investigated by means of flow visualization and measurements of vortex shedding frequencies, at Reynolds numbers 5 × 10 3-104 and stratification parameters K smaller than 1.0. The study demonstrates that as K increases from zero, the vortex shedding from a circular cylinder is progressively strengthened, while the Strouhal number becomes gradually lower than that for a homogeneous flow. At a certain critical value of K, the enhanced vortex shedding is suddenly weakened and the Strouhal number increases sharply to a high value.

Original languageEnglish
Pages (from-to)481-483
Number of pages3
JournalPhysics of Fluids A
Issue number4
Publication statusPublished - 1990

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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