A New Technique for Computing Viscous-Inviscid Interactions in Internal Flows

[+] Author and Article Information
R. C. Strawn

Acurex Corp., Aerotherm Division, Mountain View, Calif. 94039

J. H. Ferziger, S. J. Kline

Thermosciences Division, Department of Mechanical Engineering, Stanford University, Stanford, Calif. 94305

J. Fluids Eng 106(1), 79-84 (Mar 01, 1984) (6 pages) doi:10.1115/1.3242409 History: Received April 01, 1983; Online October 26, 2009


A new viscous-inviscid interaction technique has been developed for computing separated flow in planar diffusers. The method couples a set of integral equations for the boundary layers to a fully elliptic potential core flow. Rapid convergence of the method is demonstrated for planar diffusers with large regions of transitory stall. For these cases, convergence of the new method is an order of magnitude faster than that obtained using the interaction schemes of Carter and Le Balleur. Good agreement between the prediction method and experimental data is obtained for diffusers that are operating near peak pressure recovery. More importantly, the onset of asymmetric detachment is successfully predicted for these cases.

Copyright © 1984 by ASME
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