Reverse flow in a square duct with an obstruction at the entry

Chang Hyun Sohn; B. H.Lakshmana Gowda; Myong Gun Ju

doi:10.1007/s12206-009-0628-5

Reverse flow in a square duct with an obstruction at the entry

Chang Hyun Sohn, B. H.Lakshmana Gowda, Myong Gun Ju

School of Mechanical Engineering

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

In this paper, the reverse flow in a square duct with an obstruction at the front (which is a square plate), is investigated using particle image velocimetry (PIV). The gap g between the obstruction and the entry to the duct was systematically varied, and it was found that maximum reverse flow occurs around a g/w value of 0.75. The velocity vectors, vorticity plots, and other details described indicate that the flow field is different compared with the two-dimensional channel case.

Original language	English
Pages (from-to)	2376-2389
Number of pages	14
Journal	Journal of Mechanical Science and Technology
Volume	23
Issue number	9
DOIs	https://doi.org/10.1007/s12206-009-0628-5
State	Published - Sep 2009

Keywords

Obstruction
PIV
Reverse flow
Shear layers
Square duct

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10.1007/s12206-009-0628-5

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abstract = "In this paper, the reverse flow in a square duct with an obstruction at the front (which is a square plate), is investigated using particle image velocimetry (PIV). The gap g between the obstruction and the entry to the duct was systematically varied, and it was found that maximum reverse flow occurs around a g/w value of 0.75. The velocity vectors, vorticity plots, and other details described indicate that the flow field is different compared with the two-dimensional channel case.",

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N2 - In this paper, the reverse flow in a square duct with an obstruction at the front (which is a square plate), is investigated using particle image velocimetry (PIV). The gap g between the obstruction and the entry to the duct was systematically varied, and it was found that maximum reverse flow occurs around a g/w value of 0.75. The velocity vectors, vorticity plots, and other details described indicate that the flow field is different compared with the two-dimensional channel case.

AB - In this paper, the reverse flow in a square duct with an obstruction at the front (which is a square plate), is investigated using particle image velocimetry (PIV). The gap g between the obstruction and the entry to the duct was systematically varied, and it was found that maximum reverse flow occurs around a g/w value of 0.75. The velocity vectors, vorticity plots, and other details described indicate that the flow field is different compared with the two-dimensional channel case.

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KW - PIV

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KW - Shear layers

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ER -

Reverse flow in a square duct with an obstruction at the entry

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Keywords

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