The present investigation is focused on the onset phenomena from a stratified two-phase region through a single branch located on a semi-circular wall, resembling a circular reservoir of a CANDU header-feeder configuration. Two different models have been developed, over the whole range of branch Froude number, to predict the critical height at the onset of gas-entrainment. The results showed that there is both a maximum and a minimum physical limit of prediction, which depends on the branch size and configuration. Also, at a distinct range of Froude numbers within the physical limits, the predicted values of both models collaborated to the same values. The critical height corresponding to the onset of gas entrainment was found to be a function of the branch orientation and Froude number. Three different experimental data sets at branch orientation angles of zero, 45, and 90 degrees were used to validate the present models. A good concurrence was illustrated between the experimental and theoretical values.
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e-mail: hassan@me.concordia.ca
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July 2006
Technical Papers
Modeling of the Onset of Gas Entrainment From a Stratified Two-Phase Region Through Branches on a Curved Surface
A. F. Andaleeb,
A. F. Andaleeb
Department of Mechanical and Industrial Engineering,
Concordia University
, Montreal, Quebec, H3G 1M8, Canada
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I. Hassan,
I. Hassan
Department of Mechanical and Industrial Engineering,
e-mail: hassan@me.concordia.ca
Concordia University
, Montreal, Quebec, H3G 1M8, Canada
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W. Saleh,
W. Saleh
Department of Mechanical and Industrial Engineering,
Concordia University
, Montreal, Quebec, H3G 1M8, Canada
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T. Ahmad
T. Ahmad
Department of Mechanical and Industrial Engineering,
Concordia University
, Montreal, Quebec, H3G 1M8, Canada
Search for other works by this author on:
A. F. Andaleeb
Department of Mechanical and Industrial Engineering,
Concordia University
, Montreal, Quebec, H3G 1M8, Canada
I. Hassan
Department of Mechanical and Industrial Engineering,
Concordia University
, Montreal, Quebec, H3G 1M8, Canadae-mail: hassan@me.concordia.ca
W. Saleh
Department of Mechanical and Industrial Engineering,
Concordia University
, Montreal, Quebec, H3G 1M8, Canada
T. Ahmad
Department of Mechanical and Industrial Engineering,
Concordia University
, Montreal, Quebec, H3G 1M8, CanadaJ. Fluids Eng. Jul 2006, 128(4): 717-725 (9 pages)
Published Online: April 25, 2005
Article history
Received:
March 17, 2004
Revised:
April 25, 2005
Citation
Andaleeb, A. F., Hassan, I., Saleh, W., and Ahmad, T. (April 25, 2005). "Modeling of the Onset of Gas Entrainment From a Stratified Two-Phase Region Through Branches on a Curved Surface." ASME. J. Fluids Eng. July 2006; 128(4): 717–725. https://doi.org/10.1115/1.2201614
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