Statistical Properties in the Wake of a Rectangular Plate

Statistical Properties in the Wake of a Rectangular Plate

Wake properties of a rectangular plate with aspect ratio AR of 2 and 3 are investigated experimentally to identify statistically. It is characteristic of the near wake of a rectangular plate that mean velocity profile has two inflection points on the major-axis. One of the inflection points is yield...

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Veröffentlicht in:Nihon Kikai Gakkai rombunshuu. B hen 2003/03/25, Vol.69(679), pp.568-573
Hauptverfasser: TASAKA, Yuji, ISHIKAWA, Hitoshi, MOCHIZUKI, Osamu, KIYA, Masaru
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Sprache:eng ; jpn
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Turbulence
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container_start_page 568
container_title Nihon Kikai Gakkai rombunshuu. B hen
container_volume 69
creator TASAKA, Yuji
ISHIKAWA, Hitoshi
MOCHIZUKI, Osamu
KIYA, Masaru
description Wake properties of a rectangular plate with aspect ratio AR of 2 and 3 are investigated experimentally to identify statistically. It is characteristic of the near wake of a rectangular plate that mean velocity profile has two inflection points on the major-axis. One of the inflection points is yielded by the vortex shedding and the other is located within the recirculation region. The growth rate of a half width on the minor-axis is greater than that of the axisymmetric bluff bodies, such as a sphere and a circular disk, it follows the growth rate of a half width of the two-dimensional wake. The reduction rate of the maximum velocity defect is also greater than wakes of axisymmetric and two-dimensional bluff bodies. These wake properties of a rectangular plate are similar with that of an elliptic wake with the same AR. However, the existence of the corner of a rectangular plate, which is the geometrical difference between the rectangular and elliptic plate, only affected the maximum turbulent intensity on major axis.
doi_str_mv 10.1299/kikaib.69.568
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subjects Turbulence
title Statistical Properties in the Wake of a Rectangular Plate
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