Separation, Hydrodynamics, and Joule Heating Effects in Continuous Annular Electrochromatography

2013 ◽  
Vol 36 (6) ◽  
pp. 950-958 ◽  
Author(s):  
R. Laskowski ◽  
H.-J. Bart
2020 ◽  
Vol 14 ◽  

In this article investigation has been conducted on the effects of Hall parameter, rotation parameter and Joule heating on the entropy generation of fully developed electrically conducting Poiseuille flow. The coupled system of ordinary differential equations for the flow are obtained, non-dimensionalised and solutions are constructed by Adomian decomposition technique. The effects of Hall current, Ion-slip, Joule heating and magnetic parameters on the velocity, temperature, entropy generation and Bejan number are explained and shown graphically. The results indicate that fluid entropy generation is induced by increase in Hall current, rotation and Joule heating parameters. Furthermore Bejan number is accelerated by Hall current, rotation, Magnetic and Joule heating parameters which signifies that heat transfer irreversibility dominates entropy generation.


1989 ◽  
Vol 67 (4) ◽  
pp. 212-217 ◽  
Author(s):  
W. Allegretto ◽  
A. Nathan ◽  
K. Chau ◽  
H. P. Baltes

We present results of electrothermal interactions in fine geometry contacts and vias. The results have been obtained using a two-dimensional model based on the finite-box procedure. For the contact geometry, large electric potential gradients and consequently high Joule-heating effects develop at the interface, which is relatively low in electrical conductivity. In the case of the via, however, temperature escalations result from singularities in the electric field at geometrically imperfect locations, owing to inadequate step coverage in the metallization process. In particular, we discuss the treatment of boundary conditions for the temperature equation.


1999 ◽  
Vol 26 (2) ◽  
pp. 219-227 ◽  
Author(s):  
M. Abd El-Hakiem ◽  
A.A. Mohammadein ◽  
S.M.M. El-Kabeir ◽  
Rama Subba Reddy Gorla

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