An effect of sudden circumferential strain on the laminar boundary layer on a rotating cylinder in an axial flow
type: Item
instance of: scholarly article
title: An effect of sudden circumferential strain on the laminar boundary layer on a rotating cylinder in an axial flow
zbMATH Open document ID: 0568.76050
DOI: 10.1007/BF01176674
author: B. George
published in: Acta Mechanica
publication date: 1985-01-01T00:00:00Z
review text: The laminar boundary layer which develops on a rotating thin cylinder fitted with an aft-section rotating with an angular velocity different from that of a fore-section is examined numerically. This problem concerns a relaxation process of the boundary layer subjected to a sudden circumferential rate of strain. Two methods are adopted: one is to regard the flow on the aft-cylinder as perturbations of that on the fore- section, and the other is to approximate the discontinuous change in the angular celocity by the cumulative normal distribution function. It is shown that the flow fields are largely influenced by the degree of favorable pressure gradient produced in the boundary layer. Especially, in case of flow passing onto the aft-section with a smaller angular velocity, adverse pressure gradient is induced immediately after the junction between two cylinders, and when the degree of the discontinuity is increased, flow separation can be provoken.
Mathematics Subject Classification ID: 76D10
Mathematics Subject Classification ID: 76M99
zbMATH DE Number: 3908019
zbMATH Keywords: laminar boundary layer
zbMATH Keywords: rotating thin cylinder
zbMATH Keywords: relaxation process
zbMATH Keywords: sudden circumferential rate of strain
zbMATH Keywords: flow on the aft-cylinder as perturbations of that on the fore-section
zbMATH Keywords: approximate the discontinuous change in the angular celocity
zbMATH Keywords: cumulative normal distribution function
zbMATH Keywords: pressure gradient
MaRDI profile type: Publication
cites work: Behavior of a Turbulent Boundary Layer Subjected to Sudden Transverse Strain
cites work: Q3230061
cites work: Q3859432
full work available at URL: https://doi.org/10.1007/bf01176674
OpenAlex ID: W2043914855
description: scientific article; zbMATH DE number 3908019