Mass transfer at the solid-liquid interface for climbing film flow in an annular duct

Technical Report · Tue Apr 09 04:00:00 EST 1968

DOI:https://doi.org/10.2172/10180264· OSTI ID:10180264

Sutey, A M; Knudsen, J G

A method utilizing a diffusion controlled electrochemical reaction was used to measure average and instantaneous mass transfer coefficients at the solid-liquid interface in upward gas-liquid climbing film flow in a vertical annular duct. These measurements give some indication of the mechanics of flow of the film, the extent of turbulence at the inner wall, and the effect of film thickness and wave motion on the mass transfer process at the inner wall. Predictions of incipient downflow of the film, shear stress at the inner wall, and interfacial shear stress were obtained from these measurements. Fluctuations in the velocity gradient at the inner wall were also studied. Results of this study are in fair agreement with previous work and with theoretical predictions based on simplified momentum balance concepts.

• Research Organization: Battelle-Northwest, Richland, WA (United States). Pacific Northwest Lab.
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10180264
• Report Number(s): BNWL-SA--1767; ON: DE94018422
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400
ANNULAR SPACE
DUCTS
EXPERIMENTAL DATA
FILM FLOW
HEAT TRANSFER AND FLUID FLOW
HISTORICAL ASPECTS
MASS TRANSFER
MEASURING METHODS
RESEARCH PROGRAMS
SHEAR
TWO-PHASE FLOW