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Computation of turbulent flow in a thin liquid layer of fluid involving a hydraulic jumpNumerically computed flow fields and free surface height distributions are presented for the flow of a thin layer of liquid adjacent to a solid horizontal surface that encounters a hydraulic jump. Two kinds of flow configurations are considered: two-dimensional plane flow and axisymmetric radial flow. The computations used a boundary-fitted moving grid method with a k-epsilon model for the closure of turbulence. The free surface height was determined by an optimization procedure which minimized the error in the pressure distribution on the free surface. It was also checked against an approximate procedure involving integration of the governing equations and use of the MacCormack predictor-corrector method. The computed film height also compared reasonably well with previous experiments. A region of recirculating flow was found to be present adjacent to the solid boundary near the location of the jump, which was caused by a rapid deceleration of the flow.
Document ID
19910070240
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Rahman, M. M.
(Wright State Univ. Dayton, OH, United States)
Faghri, A.
(Wright State Univ. Dayton, OH, United States)
Hankey, W. L.
(Wright State University Dayton, OH, United States)
Date Acquired
August 14, 2013
Publication Date
September 1, 1991
Publication Information
Publication: ASME, Transactions, Journal of Fluids Engineering
Volume: 113
ISSN: 0098-2202
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
91A54863
Funding Number(s)
CONTRACT_GRANT: NAG5-956
Distribution Limits
Public
Copyright
Other

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