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Turbulent wake behind a T-shaped plate: Comparison with a cross-shaped plate
Published in Elsevier B.V.
2017
Volume: 65
   
Pages: 127 - 140
Abstract
The wake behind T-shaped intersecting flat plates has been studied by direct numerical simulations and compared with the wake behind intersecting plates forming a cross. The Reynolds number based on the uniform inflow velocity and the plate width d was 1000. Similar to the cross-plate the vortex shedding was suppressed in a 4d wide intersection region with a substantial base suction pressure reduction. Shear-layer (K-H) instabilities have been observed and its characteristic frequency obtained. In contrast to the cross-plate, a main feature of the mean wake structure behind the T-plate is the formation of two symmetrically positioned swirling vortices close to the internal corners of the T. This was examined by considering pressure contours and the turbulent production terms of mean streamwise vorticity. In spite of some similarities, major features of the wake behind the T-plate turned out to be distinctly different from the wake behind a cross-plate configuration. © 2017 Elsevier Inc.
About the journal
JournalData powered by TypesetInternational Journal of Heat and Fluid Flow
PublisherData powered by TypesetElsevier B.V.
ISSN0142727X
Open AccessNo
Concepts (14)
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    Reynolds number
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    Shear flow
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    Vortex flow
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    Vortex shedding
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    Wakes
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    Characteristic frequencies
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    PRESSURE CONTOURS
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    SHEAR LAYER INSTABILITY
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    Suction pressures
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    SWIRLING VORTEX
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    TURBULENT WAKE
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    UNIFORM INFLOW
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    Wake interactions
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    Plates (structural components)