Blockage effects on surface pressures

The case of an inclined flat plate with and without a guide plate

Research output: Contribution to journalArticle

Abstract

Wind tunnel wall confinement severely affects the flow characteristics around bluff bodies. In this experimental study, the blockage effects on the mean surface pressures of an inclined flat plate (aspect ratio = 0.5, tilt angle = 15-30°) with and without a guide plate were examined in two separated wind tunnels. The blockage ratio (BR) ranged from 1.79 to 16.12%, in which a BR of less than 5% was considered an interference-free case. The streamwise and spanwise pressure distributions are definitely affected by BR. Model configuration is another concern. Maskells correction method is applicable in the region of flow separation and corner vortices. There is only a minor correction in the stagnation flow region.

Original languageEnglish
Pages (from-to)915-922
Number of pages8
JournalJournal of the Chinese Institute of Engineers, Transactions of the Chinese Institute of Engineers,Series A/Chung-kuo Kung Ch'eng Hsuch K'an
Volume37
Issue number7
DOIs
Publication statusPublished - 2014 Oct 3

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Wind tunnels
Flow separation
Pressure distribution
Aspect ratio
Vortex flow

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

@article{56d249a14b5c44a9b622b8737042d757,
title = "Blockage effects on surface pressures: The case of an inclined flat plate with and without a guide plate",
abstract = "Wind tunnel wall confinement severely affects the flow characteristics around bluff bodies. In this experimental study, the blockage effects on the mean surface pressures of an inclined flat plate (aspect ratio = 0.5, tilt angle = 15-30°) with and without a guide plate were examined in two separated wind tunnels. The blockage ratio (BR) ranged from 1.79 to 16.12{\%}, in which a BR of less than 5{\%} was considered an interference-free case. The streamwise and spanwise pressure distributions are definitely affected by BR. Model configuration is another concern. Maskells correction method is applicable in the region of flow separation and corner vortices. There is only a minor correction in the stagnation flow region.",
author = "Kung-Ming Chung and Chou, {Chin Chang} and Keh-Chin Chang",
year = "2014",
month = "10",
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doi = "10.1080/02533839.2014.888810",
language = "English",
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journal = "Chung-kuo Kung Ch'eng Hsueh K'an/Journal of the Chinese Institute of Engineers",
issn = "0253-3839",
publisher = "Chinese Institute of Engineers",
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TY - JOUR

T1 - Blockage effects on surface pressures

T2 - The case of an inclined flat plate with and without a guide plate

AU - Chung, Kung-Ming

AU - Chou, Chin Chang

AU - Chang, Keh-Chin

PY - 2014/10/3

Y1 - 2014/10/3

N2 - Wind tunnel wall confinement severely affects the flow characteristics around bluff bodies. In this experimental study, the blockage effects on the mean surface pressures of an inclined flat plate (aspect ratio = 0.5, tilt angle = 15-30°) with and without a guide plate were examined in two separated wind tunnels. The blockage ratio (BR) ranged from 1.79 to 16.12%, in which a BR of less than 5% was considered an interference-free case. The streamwise and spanwise pressure distributions are definitely affected by BR. Model configuration is another concern. Maskells correction method is applicable in the region of flow separation and corner vortices. There is only a minor correction in the stagnation flow region.

AB - Wind tunnel wall confinement severely affects the flow characteristics around bluff bodies. In this experimental study, the blockage effects on the mean surface pressures of an inclined flat plate (aspect ratio = 0.5, tilt angle = 15-30°) with and without a guide plate were examined in two separated wind tunnels. The blockage ratio (BR) ranged from 1.79 to 16.12%, in which a BR of less than 5% was considered an interference-free case. The streamwise and spanwise pressure distributions are definitely affected by BR. Model configuration is another concern. Maskells correction method is applicable in the region of flow separation and corner vortices. There is only a minor correction in the stagnation flow region.

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