Unsteady flow due to an impulsively started rotating sphere
type: Item
instance of: scholarly article
title: Unsteady flow due to an impulsively started rotating sphere
zbMATH Open document ID: 0662.76045
DOI: 10.1016/0045-7930(88)90015-1
author: S. C. R. Dennis
author: Peter W. Duck
published in: Computers and Fluids
publication date: 1988-01-01T00:00:00Z
review text: The development of the flow due to a sphere which is impulsively started rotating about a diameter in a fluid initially at rest is studied numerically using two independent approaches. The first involves computing the solution of the full unsteady Navier-Stokes equations, while the second involves integration of the unsteady boundary-layer equations. As has been shown previously, the latter approach results in a breakdown of the flow in the equational region of the sphere after a finite time. This effect is reflected in the solution of the full equations by a burst of vorticity into the fluid, although in this case the steady-state solution is ultimately achieved for the finite Reynolds numbers considered.
Mathematics Subject Classification ID: 76D10
Mathematics Subject Classification ID: 76D05
Mathematics Subject Classification ID: 76M99
Mathematics Subject Classification ID: 76U05
zbMATH DE Number: 4083198
zbMATH Keywords: unsteady flow
zbMATH Keywords: impulsively started rotating sphere
zbMATH Keywords: full unsteady Navier- Stokes equations
zbMATH Keywords: unsteady boundary-layer equations
MaRDI profile type: Publication
full work available at URL: 0045-7930(88)90015-1
OpenAlex ID: W2014703335
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description: scientific article; zbMATH DE number 4083198