A study of steam condensation in countercurrent stratified flow of steam and subcooled water has been carried out in a rectangular channel inclined 33 deg to the horizontal. The variables in this experiment were the inlet water and steam flow rates, and the inlet water temperature. Condensation heat transfer coefficients were determined as functions of local steam and water flow rates, and the degree of subcooling. Correlations are given for the local Nusselt number for the smooth and for the rough interface regimes, and also for the dimensionless wave amplitude. A turbulence-centered model is also developed. It is shown that better agreement with the data can be obtained if the characteristic scales in the turbulent Nusselt number and Reynolds numbers are related to measured interfacial parameters rather than the bulk flow parameters. The important effect of interfacial shear, missing in previous eddy-transport models, is thus implicitly included.
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Local Heat Transfer Coefficients for Condensation in Stratified Countercurrent Steam-Water Flows
H. J. Kim,
H. J. Kim
Mechanical and Nuclear Engineering Department, Northwestern University, Evanston, Ill. 60201
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S. G. Bankoff
S. G. Bankoff
Chemical Engineering Department and Mechanical and Nuclear Engineering Department, Northwestern University, Evanston, Ill. 60201
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H. J. Kim
Mechanical and Nuclear Engineering Department, Northwestern University, Evanston, Ill. 60201
S. G. Bankoff
Chemical Engineering Department and Mechanical and Nuclear Engineering Department, Northwestern University, Evanston, Ill. 60201
J. Heat Transfer. Nov 1983, 105(4): 706-712 (7 pages)
Published Online: November 1, 1983
Article history
Received:
November 5, 1982
Online:
October 20, 2009
Citation
Kim, H. J., and Bankoff, S. G. (November 1, 1983). "Local Heat Transfer Coefficients for Condensation in Stratified Countercurrent Steam-Water Flows." ASME. J. Heat Transfer. November 1983; 105(4): 706–712. https://doi.org/10.1115/1.3245652
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