The role of visualization in clarifying interfacial heat and mass transfer mechanisms

1999 ◽  
Vol 2 (2) ◽  
pp. 159-167
Author(s):  
V. De Angelis ◽  
S. Banerjee
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Transfer Mechanisms

Role of heat and mass transfer in membrane distillation process

Desalination ◽  
1991 ◽  
Vol 81 (1-3) ◽  
pp. 91-106 ◽  
Author(s):  
S. Bandini ◽  
C. Gostoli ◽  
G.C. Sarti
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Membrane Distillation ◽  
Distillation Process

An insight into the heat and mass transfer mechanisms of eggshells hatching broiler chicks and its effects to the hatcher environment

2015 ◽  
Vol 48 ◽  
pp. 69-76 ◽  
Author(s):  
C.E.B. Romanini ◽  
V. Exadaktylos ◽  
S.W. Hong ◽  
Q. Tong ◽  
I. McGonnell ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Broiler Chicks ◽  
Transfer Mechanisms ◽  
Insight Into

Computational Investigations of Pyrolysis in Porous Media: Impact of Heat and Mass Transfer

2004 ◽  
Author(s):  
Emilie Biotteau ◽  
Fre´de´ric Plourde ◽  
Son Kim Doan ◽  
Jean-Pierre Lambelin
Keyword(s):  
Mass Transfer ◽  
Porous Media ◽  
Heat And Mass Transfer ◽  
Lumped Parameter Model ◽  
Grain Structure ◽  
Media Impact ◽  
Lumped Parameter ◽  
Volatile Products ◽  
Dimensional Simulation

The present paper deals with impact of heat and mass transfer on pyrolysis mechanisms in a porous media. Importance of porous medium anisotropy is addressed by using a two-dimensional simulation of the problem. To do so, the energy equation is discretized in space by a central differencing while modeling of mass transfer is based on pressure instead of velocity formulation. The kinetics is assumed to follow the lumped-parameter model which is mainly described by a three competitive reactions scheme. Results shed light on the role of grain over the pyrolytic behavior. The grain structure is found to strongly affect heat conduction as well as flows of volatile products through the pores.

Validation of a CFD Condensation Model Based on Heat and Mass Transfer Analogy by TOSQAN Facility ISP47 Test

2006 ◽  
Author(s):  
Matteo Bucci ◽  
Walter Ambrosini ◽  
Nicola Forgione ◽  
Francesco Oriolo ◽  
Sandro Paci
Keyword(s):  
Mass Transfer ◽  
Heat And Mass Transfer ◽  
Nuclear Reactor ◽  
Momentum Balance ◽  
Average Temperature ◽  
Standard Problem ◽  
Computational Fluid Dynamics Analysis ◽  
Energy And Momentum ◽  
Transfer Mechanisms ◽  
Good Agreement

The content of this paper is focused on a computational fluid dynamics analysis of the test performed within the facility TOSQAN as a part of the International Standard Problem 47 (ISP 47). The aim of the study is to contribute to the understanding of the heat and mass transfer mechanisms and to check the possibility to use a commercial CFD code for simulating the mass transfer phenomena of interest in nuclear reactor containment design and safety analysis. In this aim, the FLUENT 6.2 code has been used. The effect of the condensation rate onto the vessel walls was simulated by appropriate source terms introduced by user-defined subroutines into the mass, energy and momentum balance equations. In the paper the time trends of the average temperature and pressure of the atmosphere inside the TOSQAN vessel have been compared with the available experimental data, obtaining a good agreement. Spatial profiles have been also analysed and compared with the experimental ones for the main physical variables in the first, second and fourth steady-state phases which the test consists of.

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