Local heat transfer coefficients for condensation in stratified countercurrent steam-water flows

Journal Article · Tue Nov 01 04:00:00 EST 1983 · J. Heat Transfer; (United States)

DOI:https://doi.org/10.1115/1.3245652· OSTI ID:6736785

Kim, H J; Bankoff, S G

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.

• Research Organization: Graduate Student, Mechanical and Nuclear Engineering Department
• OSTI ID: 6736785
• Journal Information: J. Heat Transfer; (United States), Journal Name: J. Heat Transfer; (United States) Vol. 105:4; ISSN JHTRA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
COUNTERFLOW SYSTEMS
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
HYDROGEN COMPOUNDS
NUSSELT NUMBER
OXYGEN COMPOUNDS
TURBULENCE
TWO-PHASE FLOW
WATER