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RESEARCH PAPERS

Calculation of Confined Swirling Flows With a Second Moment Closure

[+] Author and Article Information
W. P. Jones, A. Pascau

Department of Chemical Engineering and Chemical Technology, Imperial College, London SW7 2AZ, England

J. Fluids Eng 111(3), 248-255 (Sep 01, 1989) (8 pages) doi:10.1115/1.3243638 History: Received May 13, 1987; Online October 26, 2009

Abstract

A Reynolds stress transport equation model and the k –ε turbulence model have been applied to the calculation of a confined, strongly swirling flow. A comparison of the results with measurement shows clearly the superiority of the transport equation model. It reproduces the major features of the flow including the strong stabilizing effects of the swirl on the shear stresses and the calculated axial and circumferential components of mean velocity are in reasonable agreement with measured profiles. The corresponding normal stresses are, however, overpredicted but previously suggested modifications to the ε-equation to account for rotation did not bring any improvement. The k –ε model does not contain any mechanism to describe the stabilizing effects of swirling motion and as a consequence it performs poorly; large discrepancies exist between the measured and calculated mean velocity field.

Copyright © 1989 by ASME
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