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FLOW OF A NEWTONIAN FLUID BETWEEN ECCENTRIC ROTATING CYLINDERS

ESTEBAN SAATDJIAN (Laboratoire des Sciences du Genie Chimique, ENSIC—LSGC, 1 Rue Grandville, BP 451, F‐54001 Nancy Cédex, France)
NOEL MIDOUX (Laboratoire des Sciences du Genie Chimique, ENSIC—LSGC, 1 Rue Grandville, BP 451, F‐54001 Nancy Cédex, France)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 1 March 1992

Abstract

The flow between eccentric rotating cylinders when either the outer or inner cylinder is stationary is analysed both for the creeping flow approximation and for the case when inertial effects are not negligible. Numerical solutions are obtained using a finite difference ADI scheme and a fine orthogonal bipolar coordinate grid. When the centres of the two cylinders are far enough, a two‐dimensional recirculation zone appears in the region where the gap spacing is greatest. On increasing the eccentricity, the recirculation zone becomes bigger and the separation and reattachment points move towards the region of narrowest gap. Further increase of the eccentricity results in the formation of a saddle point between the cylinders at the region of narrowest gap. As the Reynolds numbers increases, inertial effects modify slightly the recirculation region; the separation point moves upstream and the reattachment point moves downstream when either the inner or the outer cylinder rotate.

Keywords

Citation

SAATDJIAN, E. and MIDOUX, N. (1992), "FLOW OF A NEWTONIAN FLUID BETWEEN ECCENTRIC ROTATING CYLINDERS", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 2 No. 3, pp. 261-270. https://doi.org/10.1108/eb017494

Publisher

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MCB UP Ltd

Copyright © 1992, MCB UP Limited