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Interfacial friction in cocurrent upward annular flow. Final report. [PWR; BWR]

Technical Report ·
OSTI ID:5338642
Cocurrent upward annular flow is investigated, with an emphasis on correlating and predicting pressure drop. Attention is given to the characteristics of the liquid flow in the film, and the interaction of the core with the film. Alternate approaches are discussed for correlating suitably defined interfacial friction factors. Both approaches are dependent on knowledge of the entrainment in order to make predictions. Dimensional analysis is used to define characteristic parameters of the flow and an effort is made to determine, to the extent possible, the influences of these parameters on the interfacial friction factor.
Research Organization:
Dartmouth Coll., Hanover, NH (USA). Thayer School of Engineering
OSTI ID:
5338642
Report Number(s):
EPRI-NP-2326; ON: DE82903119
Country of Publication:
United States
Language:
English