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RESEARCH PAPERS

Turbulent Viscosities for Swirling Flow in a Stationary Annulus

[+] Author and Article Information
C. J. Scott

School of Mechanical and Aerospace Engineering, University of Minnesota, Minneapolis, Minn.

D. R. Rask

Heat Transfer Laboratory, School of Mechanical and Aerospace Engineering, University of Minnesota, Minneapolis, Minn.

J. Fluids Eng 95(4), 557-566 (Dec 01, 1973) (10 pages) doi:10.1115/1.3447070 History: Received March 08, 1973; Online October 12, 2010

Abstract

Developing axial and decaying tangential velocity fields are surveyed in a stationary annulus with a nearly free vortex initial swirl distribution. Isothermal air was used as the working fluid in an annulus with a single diameter ratio (di /d0 = 0.4) and at a single axial bulk Reynolds number of 1.3 × 105 . The annular geometry was selected because the inner and outer wall curvatures yield opposite effects on the swirl turbulence. The discussion is centered on a critical exposure of the data reduction techniques (momentum integrals) for obtaining the radial variations of the axial and tangential momentum diffusivities.

Copyright © 1973 by ASME
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