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U.S. Department of Energy
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Effect of scale on two-phase countercurrent flow flooding. Final report, July 1977-June 1978

Technical Report ·
OSTI ID:5981602
Air-water countercurrent flow experiments have been performed in vertical tubes of different sizes and in annuli with different gap sizes. The gas velocity sufficient to produce zero penetration of liquid in large tubes (6'' and more) seems to be the same. For 2'' diameter tubes the flooding behavior can be represented by the Wallis correlation. In large tubes and annuli it was assumed that all liquid penetrated in the form of a film along the walls. A force balance on this liquid film leads to a correlation, which predicts the flooding behavior in most cases satisfactorily.
Research Organization:
Dartmouth Coll., Hanover, NH (USA). Thayer School of Engineering
OSTI ID:
5981602
Report Number(s):
NUREG/CR-0312
Country of Publication:
United States
Language:
English