Reaction on a solid surface supplied by an anomalous mass transfer source

2014 ◽  
Vol 410 ◽  
pp. 399-406 ◽  
Author(s):  
E.K. Lenzi ◽  
M.K. Lenzi ◽  
R.S. Zola ◽  
H.V. Ribeiro ◽  
F.C. Zola ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Solid Surface

Diffusion-Layer Theory for Flows Under Apparent Wall Slip

1998 ◽  
Vol 63 (1) ◽  
pp. 132-140 ◽  
Author(s):  
Ondřej Wein
Keyword(s):  
Mass Transfer ◽  
Velocity Profile ◽  
Solid Surface ◽  
Diffusion Layer ◽  
Analytical Formula ◽  
Wall Slip ◽  
Slip Effect ◽  
Local Power ◽  
Overall Mass Transfer Coefficient ◽  
Apparent Wall Slip

An explicit analytical formula is given for the overall mass transfer coefficient between the bulk of flowing microdisperse liquid and a small but finite active part of a solid surface. The apparent wall slip effect inside a diffusion layer is reflected through the local power-law velocity profile, vx(z) = Bzp, and a distribution B = B(x,y) over the solid surface.

Concentration boundary layer under general steady-flow conditions

1990 ◽  
Vol 55 (10) ◽  
pp. 2404-2416 ◽  
Author(s):  
Ondřej Wein
Keyword(s):  
Boundary Layer ◽  
Mass Transfer ◽  
Velocity Field ◽  
Transfer Coefficient ◽  
Solid Surface ◽  
Active Surface ◽  
Flow Conditions ◽  
Liquid Stream ◽  
Concentration Boundary ◽  
Overall Mass Transfer Coefficient

An explicit formula is given for the overall mass-transfer coefficient between a steady liquid stream and a small active part of a solid surface in the stream. This is a generalization of the well-known Lighthill formula to the form applicable for any velocity field and any shape of the active surface. Its use is demonstrated for the circular electrodiffusion probes under various kinematic conditions.

Simultaneous Heat and Mass Transfer From a Two-Dimensional, Partially Liquid-Covered Surface

1991 ◽  
Vol 113 (4) ◽  
pp. 874-882 ◽  
Author(s):  
Y.-X. Tao ◽  
M. Kaviany
Keyword(s):  
Heat Transfer ◽  
Mass Transfer ◽  
Reynolds Number ◽  
Surface Temperature ◽  
Heat And Mass Transfer ◽  
Solid Surface ◽  
Transfer Rate ◽  
Mass Transfer Rate ◽  
Ambient Air ◽  
Simultaneous Heat

Simultaneous heat and mass transfer from partially liquid-covered surfaces is examined experimentally using a surface made of cylinders with the voids filled with liquid. The steady-state evaporation rate, surface temperature of the liquid and exposed solid, and location of meniscus are measured for various ambient air velocities and temperatures. Using these, we examine the effect of the extent to which the liquid covers the surface on the evaporation mass transfer rate resulting from the convective heat transfer from the ambient gas to this surface. The results show strong Bond and Reynolds number effects. For small Bond and Reynolds numbers, the presence of dry (exposed solid) surface does not influence the mass transfer rate. As the Bond or Reynolds number increases, a critical liquid coverage is found below which the mass transfer begins to decrease. Heat transfer from the exposed solid to the liquid is also examined using the measured surface temperature, a conduction model, and an estimate of the liquid and solid surface areas (using a static formation for the liquid meniscus). The results show that at the liquid surface an analogy between heat and mass transfer does not exist.

Numerical Treatment of the MHD Convective Heat and Mass Transfer in an Electrically Conducting Fluid over an Infinite Solid Surface in Presence of the Internal Heat Generation

2003 ◽  
Vol 58 (11) ◽  
pp. 601-611 ◽  
Author(s):  
N. T. Eldabe ◽  
A. G. El-Sakka ◽  
Ashraf Fouad
Keyword(s):  
Mass Transfer ◽  
Heat Generation ◽  
Solid Surface ◽  
Numerical Solutions ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Conducting Fluid ◽  
Electrically Conducting ◽  
Linear Partial Differential Equations ◽  
Electrically Conducting Fluid

Numerical solutions of a set of non-linear partial differential equations are investigated. We obtained the velocity distribution of a conducting fluid flowing over an infinite solid surface in the presence of an uniform magnetic field and internal heat generation. The temperature and concentration distributions of the fluid are studied as well as the skin-friction, rate of mass transfer and local wall heat flux. The effect of the parameters of the problem on these distributions is illustrated graphically.

Dissolution of a vertical solid surface by turbulent compositional convection

2015 ◽  
Vol 765 ◽  
pp. 211-228 ◽  
Author(s):  
Ross C. Kerr ◽  
Craig D. McConnochie
Keyword(s):  
Mass Transfer ◽  
Theoretical Model ◽  
Solid Surface ◽  
Vertical Wall ◽  
Scaling Analysis ◽  
Field Observations ◽  
Laboratory Measurements ◽  
Salty Water ◽  
Free Parameters ◽  
Compositional Convection

AbstractWe examine the dissolution of a vertical solid surface in the case where the heat and mass transfer is driven by turbulent compositional convection. A theoretical model of the turbulent dissolution of a vertical wall is developed, which builds on the scaling analysis presented by Kerr (J. Fluid Mech., vol. 280, 1994, pp. 287–302) for the turbulent dissolution of a horizontal floor or roof. The model has no free parameters and no dependence on height. The analysis is tested by comparing it with laboratory measurements of the ablation of a vertical ice wall in contact with salty water. The model is found to accurately predict the dissolution velocity for water temperatures up to approximately 5–$6\,^{\circ }\text{C}$, where there is a transition from turbulent dissolution to turbulent melting. We quantify the turbulent convective dissolution of vertical ice bodies in the polar oceans, and compare our results with some field observations.

Influence of solid-surface vibrations on mass transfer

2017 ◽  
Vol 51 (5) ◽  
pp. 633-638 ◽  
Author(s):  
I. A. Semenov ◽  
B. A. Ul’yanov ◽  
M. Yu. Fereferov ◽  
N. N. Kulov
Keyword(s):  
Mass Transfer ◽  
Solid Surface ◽  
Surface Vibrations
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