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Viscid-inviscid interaction of incompressible separated flowsA flow model has been devised to deal with the viscid-inviscid interaction of a class of two-dimensional incompressible separated flow problems. It is suggested that the corresponding inviscid flow of these problems is described by the free streamline theory with few unspecified parameters and their values are, in turn, determined by the viscous flow considerations. The problem of a flow past a backward facing step is selected for study in detail. The viscous flow components of turbulent jet mixing, recompression, and reattachment are delineated and studied individually. When they are later combined, it is found that the point of reattachment behaves as a saddle-point-type singularity in the system of differential equations describing the viscous flow process. This feature is employed to the determination of the aforementioned free parameters and thus the establishment of the overall corresponding inviscid flow field. The resulting base pressure coefficient for the specific case agrees reasonably well with the available experimental data.
Document ID
19770027149
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chow, W. L.
(Illinois, University Urbana, Ill., United States)
Spring, D. J.
(U.S. Army, Research, Development and Engineering Laboratory, Redstone Arsenal Ala., United States)
Date Acquired
August 8, 2013
Publication Date
September 1, 1976
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
ASME PAPER 76-WA/APM-7
Accession Number
77A10001
Funding Number(s)
CONTRACT_GRANT: NGL-14-005-140
CONTRACT_GRANT: DAHC04-75-0041
Distribution Limits
Public
Copyright
Other

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