Surface Static Pressures in an Inlet Vortex Flow Field

[+] Author and Article Information
W. Liu, E. M. Greitzer, C. S. Tan

Department of Aeronautics and Astronautics, Massachusetts Institute of Technology, Cambridge, Mass. 02139

J. Eng. Gas Turbines Power 107(2), 387-393 (Apr 01, 1985) (7 pages) doi:10.1115/1.3239738 History: Received January 18, 1984; Online October 15, 2009


An experimental investigation of the three-dimensional flow field associated with an inlet vortex is reported. The specific configuration investigated is an inlet, in proximity to a ground plane, in crosswind. Parametric data are presented to define the regimes of vortex formation in this configuration, as a function of inlet height to diameter ratio and inlet velocity ratio. The detailed static pressure distribution on the inlet is given for two quite different flow regimes, one with a strong inlet vortex and one with no inlet vortex. These new quantitative data are supplemented by flow visualization studies that allow an estimate to be made of the circulation around the inlet vortex. It is argued that the static pressure distributions in both cases can be clearly interpreted using the basic ideas of inlet vortex formation that were previously developed from (qualitative) water tunnel studies.

Copyright © 1985 by ASME
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