Invariance in growth and mass transport

2018 ◽  
Vol 24 (6) ◽  
pp. 1707-1713 ◽  
Author(s):  
Mohammadjavad Javadi ◽  
Marcelo Epstein

The equations of balance of a continuum under conditions of growth and mass diffusion are derived from a principle of invariance under general observer transformations. The resulting equations are invariant under inertial transformations. Apparent body forces stemming from the mass transport phenomenon are identified and shown to be associated with non-inertial observers.

1983 ◽  
Vol 54 (5) ◽  
pp. 2407-2412 ◽  
Author(s):  
T. R. Chen ◽  
L. C. Chiu ◽  
A. Hasson ◽  
K. L. Yu ◽  
U. Koren ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Shiang-Wuu Perng ◽  
Chang-Ren Chen

This study analyzes how anode thickness and working temperature affect heat/mass transport characteristics and cell performance of the anode-supported SOFC button cell by the finite-volume SIMPLE-C method coupled with preconditioned conjugate gradient methods. The numerical results of this work are compared with the experimental data and good agreement is observed. The simulation is carried out for various anode thicknesses (0.1, 0.5, and 1.0 mm) and working temperatures (873, 1073, and 1273 K). The results showed that the cell performance reduces about 5.05% as the anode thickness is increased from 0.1 mm to 1.0 mm; however, the influence of anode thickness on the heat/mass transport phenomenon is slight because the geometric size of anode thickness is tiny for the whole SOFC. In addition, the cell performance increases about 50.54% as the working temperature is increased from 873 K to 1273 K. A higher working temperature enhances the fluid velocity and convection and consequently promotes the chemical reaction and obtains a better cell performance.


2016 ◽  
Vol 100 ◽  
pp. 477-486 ◽  
Author(s):  
E. Gutiérrez-Cortez ◽  
I. Rojas-Molina ◽  
M.L. Zambrano-Zaragoza ◽  
D.G. Espinosa-Arbeláez ◽  
A. Rojas ◽  
...  

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