A numerical study on the mechanism of reverse flow in a channel without obstruction at the entry
type: Item
instance of: scholarly article
title: A numerical study on the mechanism of reverse flow in a channel without obstruction at the entry
zbMATH Open document ID: 1292.76034
DOI: 10.1504/PCFD.2012.044853
author: Yanyan Li
published in: Progress in Computational Fluid Dynamics
publication date: 2014-07-31T00:00:00Z
review text: Summary: It is known that reverse flow occurs in a channel when there is an obstruction at the entry. However, it has been recently shown that the reverse flow can be realised even without an obstruction. This is achieved when the two sides of the channel have a stagger and are kept at an angle of attack to the free stream. The features of the computed reverse flow agree with the experimental results. The computations show that the pumping mechanism of reverse flow in the present case can be explained by the relatively lower pressure near the entry to the channel and the slightly higher pressure near the exit of the channel. The low pressure region, near the entry to the channel, having staggered walls and kept at an angle of attack, is generated by the flow separation at the leading edge of the bottom wall of the channel.
Mathematics Subject Classification ID: 76D05
Mathematics Subject Classification ID: 76M20
zbMATH DE Number: 6323314
zbMATH Keywords: reverse flow
zbMATH Keywords: channels
zbMATH Keywords: staggered sides
zbMATH Keywords: unsteady flow
MaRDI profile type: Publication
full work available at URL: pcfd.2012.044853
OpenAlex ID: W2081937696
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description: scientific article