Heat and Mass Transfer into a Porous Annulus Found Between Two Horizontal Concentric Circular Cylinders

2016 ◽  
pp. 511-522 ◽  
Author(s):  
Karim Ragui ◽  
Abdelkader Boutra ◽  
Rachid Bennacer ◽  
Youb Khaled Benkahla
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Circular Cylinders

Local Mass Transfer From Circular Cylinders in Cross Flow

1961 ◽  
Vol 83 (4) ◽  
pp. 483-491 ◽  
Author(s):  
H. H. Sogin ◽  
V. S. Subramanian
Keyword(s):  
Boundary Layer ◽  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Cross Flow ◽  
Circular Cylinders ◽  
Local Rate ◽  
Local Mass ◽  
Ordinary Temperature ◽  
Local Mass Transfer ◽  
Temperature And Pressure

This is an investigation of the distribution of the local rate of mass transfer from 4.2-in-diam naphthalene cylinders to air at ordinary temperature and pressure, flowing normal to the axis. The air speeds are near and within the critical zone of the drag. The results in the laminar region are compared with approximate boundary-layer calculations of H. Schuh and of H. J. Merk and with corresponding heat and mass-transfer experimentation in the literature. It is shown that the calculations after Merk are reliable from the point of stagnation to the predicted point of separation.

Numerical Analysis of Heat and Mass Transfer From Horizontal Cylinders in Downward Flow of Air-Water Mist

1990 ◽  
Vol 112 (2) ◽  
pp. 472-478 ◽  
Author(s):  
T. Aihara ◽  
W.-S. Fu ◽  
Y. Suzuki
Keyword(s):  
Mass Transfer ◽  
Numerical Analysis ◽  
Size Distribution ◽  
Heat And Mass Transfer ◽  
Droplet Size ◽  
Droplet Size Distribution ◽  
Water Mist ◽  
Circular Cylinders ◽  
Two Phase ◽  
Downward Flow

A numerical analysis is made of heat and mass transfer from horizontal circular cylinders in a downward flow of air/water mist of polydisperse droplets, taking into account the far-upstream droplet size distribution and the blockage effect of the gas phase flow. The effects of the droplet size distribution, temperatures, and liquid-to-gas mass flow ratio upon the liquid film thickness and wall shear stress, velocity, and temperature of the air-water interface, two-phase Nusselt numbers, etc., are examined.

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