Laminar flow mass transfer in a flat duct with permeable walls

AIChE Journal ◽  
1971 ◽  
Vol 17 (4) ◽  
pp. 773-780 ◽  
Author(s):  
Clark K. Colton ◽  
Kenneth A. Smith ◽  
Pieter Stroeve ◽  
Edward W. Merrill
Keyword(s):  
Mass Transfer ◽  
Laminar Flow ◽  
Permeable Walls

Computational analysis of heat and mass transfer in a micropolar fluid flow through a porous medium between permeable channel walls

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Sohail Ahmad ◽  
Muhammad Ashraf ◽  
Kashif Ali ◽  
Kottakkaran Sooppy Nisar
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Micropolar Fluid ◽  
Numerical Data ◽  
Substantial Effect ◽  
Linearization Method ◽  
Transfer Rates ◽  
Micropolar Fluid Flow ◽  
Permeable Walls ◽  
Model Equations

Abstract The present work numerically investigates the mass and heat transport flow of micropolar fluid in a channel having permeable walls. The appropriate boundary layer approximations are used to convert the system of flow model equations in ODEs, which are then numerically treated with the quasi-linearization method along with finite difference discretization. This technique creates an efficient way to solve the complex dynamical system of equations. A numerical data comparison is presented which assures the accuracy of our code. The outcomes of various problem parameters are portrayed via the graphs and tables. The concentration and temperature accelerate with the impacts of the Peclet numbers for the diffusion of mass and heat, respectively. It is also found that the porosity of the medium has a substantial effect on the skin friction but low effect on the heat and mass transfer rates. Our results may be beneficial in lubrication, foams and aerogels, micro emulsions, micro machines, polymer blends, alloys, etc.

Local and Average Transfer Coefficients for Developing Laminar Flow Between Parallel Flat Plates

1983 ◽  
Vol 7 (1) ◽  
pp. 12-16
Author(s):  
E.C. Fernandes ◽  
F.E.M. Saboya
Keyword(s):  
Mass Transfer ◽  
Laminar Flow ◽  
Equivalent Diameter ◽  
Transfer Coefficients ◽  
Flat Plates ◽  
Experimental Conditions ◽  
Average Mass ◽  
Channel One ◽  
Plate Length ◽  
Naphthalene Sublimation Technique

Local and average mass transfer coefficients in the entrance region between parallel flat plates were experimentally determined. The mass transfer experiments were performed using the naphthalene sublimation technique. In accordance with the analogy between heat and mass transfer, the experimental conditions simulated the heat transfer situation characterized by laminar flow in a parallel plate channel, one wall being isothermal and the other insulated, The temperature and velocity fields were simultaneously developing. Results were obtained for Reynolds numbers from 100 to 1500 and plate length-to-equivalent diameter ratios from 5 to 20. By use of the reciprocal of the Graetz number as an independent variable, the data for the various test runs could be brought together. The experimental results were compared with analytical predictions and a very good agreement was observed. Overall mass transfer results were measured with a precision balance and compared with the integral local values; the two methods gave results that agree to within a few percent (typically 2%).

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