Calculation of Interacting Turbulent Shear Layers: Duct Flow

[+] Author and Article Information
P. Bradshaw, R. B. Dean

Department of Aeronautics, Imperial College, London, England

D. M. McEligot

Department of Mechanical Engineering, Imperial College, London, England

J. Fluids Eng 95(2), 214-219 (Jun 01, 1973) (6 pages) doi:10.1115/1.3446990 History: Received July 27, 1972; Online October 12, 2010


The boundary-layer calculation method of Bradshaw, Ferriss, and Atwell has been adapted to deal with the interaction between two shear layers with a change of sign of shear stress. Good agreement with experiments in symmetrical duct flow is found, using the same empirical input as in a boundary layer and assuming that the turbulence fields on either side of the duct can be superposed. The restriction to symmetrical flow is temporary and is a numerical rather than a physical simplification. In free jet flows, which have higher turbulence levels than ducts, small changes in empirical input are required to treat the interaction.

Copyright © 1973 by ASME
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