Effect of Turbulent Schmidt Number on Mass-Transfer Rates to Falling Liquid Films

1999 ◽  
Vol 38 (6) ◽  
pp. 2503-2504 ◽  
Author(s):  
Aleksandar Duduković ◽  
Rada Pjanović
Keyword(s):  
Mass Transfer ◽  
Schmidt Number ◽  
Liquid Films ◽  
Transfer Rates ◽  
Turbulent Schmidt Number ◽  
Falling Liquid Films

scholarly journals Gas-solid and gas-liquid mass transfer: Effect of turbulent Schmidt number

2007 ◽  
Vol 13 (3) ◽  
pp. 167-168 ◽  
Author(s):  
Aleksandar Dudukovic ◽  
Rada Pjanovic
Keyword(s):  
Mass Transfer ◽  
Eddy Viscosity ◽  
Schmidt Number ◽  
Mass Transfer Rate ◽  
Transfer Effect ◽  
Transfer Coefficients ◽  
Mass Transfer Effect ◽  
Liquid Mass ◽  
Turbulent Schmidt Number ◽  
Liquid Mass Transfer

The scope of this paper is to explain effect of eddy viscosity and turbulent Schmidt number on mass transfer rate. New, theoretically based correlation for gas-liquid mass transfer coefficients are proposed.

scholarly journals Simultaneous measurements of thickness and local mass transfer rate on falling liquid films.

1979 ◽  
Vol 12 (6) ◽  
pp. 483-485
Author(s):  
RYUZO ITO ◽  
KAORU TOMURA ◽  
MASAO YAMAMOTO ◽  
YUKIE OKADA ◽  
NOBUHIRO TSUBOI ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Transfer Rate ◽  
Mass Transfer Rate ◽  
Liquid Films ◽  
Local Mass ◽  
Simultaneous Measurements ◽  
Local Mass Transfer ◽  
Falling Liquid Films

Momentum and Mass Transfer in a Submerged Water Jet

1955 ◽  
Vol 22 (2) ◽  
pp. 161-164
Author(s):  
Walton Forstall ◽  
E. W. Gaylord
Keyword(s):  
Mass Transfer ◽  
Sodium Chloride ◽  
Schmidt Number ◽  
Water Jet ◽  
Turbulent Prandtl Number ◽  
Tracer Technique ◽  
Air Jets ◽  
Air Jet ◽  
Turbulent Schmidt Number ◽  
Diffusion Profiles

Abstract For a round water jet issuing into stationary water, momentum and material diffusion were measured, the latter by means of a sodium chloride tracer technique. It was found that (a) the behavior of the water jet was the same as that found by others for an air jet issuing into air, and hence constants obtained from measurements in air can be applied to water; (b) the turbulent Schmidt number for water is approximately the same as the turbulent Schmidt number for air and about equal to the turbulent Prandtl number for air jets; and (c) the error curve serves as a useful and satisfactory representation of diffusion profiles for water just as it does for air.

Liquid Films Falling Over Horizontal Tube Banks: Deviations From Idealized Flow Patterns and Implications for Heat and Mass Transfer

2002 ◽  
Author(s):  
Jesse D. Killion ◽  
Srinivas Garimella
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Horizontal Tube ◽  
High Heat ◽  
Liquid Films ◽  
Heat Pumps ◽  
Pressure Drops ◽  
Transfer Rates ◽  
Internally Cooled ◽  
Simplifying Assumptions

Liquid films falling over banks of internally cooled horizontal tubes are often used to absorb mass from a surrounding vapor. This arrangement is particularly suitable for absorption processes where the vapor has a high heat of absorption and where high transfer rates and low pressure drops are required, as is the case of absorption heat pumps and other chemical processes. When the liquid film presents a significant resistance to heat and mass transfer, understanding the motion of the film is critical. However, mathematical models of these types of systems in the literature have generally made use of many simplifying assumptions about the behavior of the falling liquid. The formation, detachment, and impact of droplets and the associated waves and film disturbances can all affect the mixing of the liquid and can enhance transfer rates accordingly. The objective of this paper is to identify and visually document these deviations from idealized film behavior and discuss their implications on the heat and mass transfer processes, which are important to consider in the development of mechanistic models of the absorption process.

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