Flow regimes in a single dimple on the channel surface |
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Authors: | G V Kovalenko V I Terekhov A A Khalatov |
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Institution: | (1) Department of Technical Thermodynamics, University of Rostock, 18059 Rostock, Germany |
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Abstract: | The boundaries of the domains of existence of flow regimes past single dimples made as spherical segments on a flat plate
are determined with the use of available experimental results. Regimes of a diffuser-confuser flow, a horseshoe vortex, and
a tornado-like vortex in the dimple are considered. Neither a horseshoe vortex nor a tornado-like vortex is observed in dimples
with the relative depth smaller than 0.1. Transformations from the diffuser–confuser flow regime to the horseshoe vortex regime
and from the horseshoe vortex flow to the tornado-like vortex flow are found to depend not only on the Reynolds number, but
also on the relative depth of the spherical segment. Dependences for determining the boundaries of the regime existence domains
are proposed, and parameters at which the experimental results can be generalized are given. |
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Keywords: | |
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