Spectral entropy in a boundary-layer flow
type: Item
instance of: scholarly article
title: Spectral entropy in a boundary-layer flow
zbMATH Open document ID: 1446.76103
published in: Entropy
publication date: 2014-08-26T00:00:00Z
review text: Summary: This article presents a comparison of the entropy production in a laminar and transitional boundary layer flow with the spectral entropy produced in a region of instability induced by an imposed periodic disturbance. The objective of the study is exploratory in nature by computing a boundary-layer environment with well-established computer techniques and comparing the predictions of the maximum rate of entropy production in the wall shear layer with the deterministic prediction of the spectral entropy growth within an inceptive instability in the inner region of the upstream boundary-layer flow. The deterministic values of the spectral entropy within the instability are brought into agreement with the computed rate of entropy production inversely along the shear flow with the assumption that the instability is of a span-wise vortex form and that the spectral entropy components are transported into the wall shear layer by vortex down sweep and are processed into thermodynamic entropy in the boundary-layer wall region.
Mathematics Subject Classification ID: 76D10
Mathematics Subject Classification ID: 76F40
Mathematics Subject Classification ID: 76F06
zbMATH DE Number: 6334262
zbMATH Keywords: boundary-layer computations
zbMATH Keywords: boundary layer entropy production
zbMATH Keywords: induced flow instabilities
zbMATH Keywords: spectral entropy
zbMATH Keywords: vortex-induced down sweep
author: La Var King Isaacson
MaRDI profile type: Publication
full work available at URL: https://doi.org/10.3390/e13091555
OpenAlex ID: W1988109943
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DOI: 10.3390/E13091555
description: scientific article; zbMATH DE number 6334262