scholarly journals Variational multiscale stabilized finite element analysis of non-Newtonian Casson fluid flow model fully coupled with Transport equation with variable diffusion coefficients

2022 ◽  
Vol 388 ◽  
pp. 114272
Author(s):  
B.V. Rathish Kumar ◽  
Manisha Chowdhury
Keyword(s):  
Finite Element Analysis ◽  
Diffusion Coefficients ◽  
Flow Model ◽  
Casson Fluid ◽  
Element Analysis ◽  
Stabilized Finite Element ◽  
Variational Multiscale ◽  
Variable Diffusion ◽  
Variable Diffusion Coefficients ◽  
Fully Coupled

Soret Effect for a Ternary Mixture in Porous Cavity: Modeling With Variable Diffusion Coefficients and Viscosity

2008 ◽  
Vol 130 (8) ◽  
Author(s):  
T. J. Jaber ◽  
Y. Yan ◽  
M. Z. Saghir
Keyword(s):  
Thermal Diffusion ◽  
Diffusion Coefficients ◽  
Molecular Diffusion ◽  
Soret Effect ◽  
Left Wall ◽  
Porous Cavity ◽  
Buoyancy Convection ◽  
Variable Diffusion ◽  
Variable Diffusion Coefficients ◽  
The Right

A porous cavity filled with methane (C1), n-butane (nC4), and dodecane (C12) at a pressure of 35.0MPa is used to investigate numerically the flow interaction due to the presence of thermodiffusion and buoyancy forces. A lateral heating condition is applied with the left wall maintained at 10°C and the right wall at 50°C. The molecular diffusion and thermal diffusion coefficients are functions of temperature, concentration, and viscosity of mixture components. It has been found that for permeability below 200md the thermodiffusion is dominant; and above this level, buoyancy convection becomes the dominant mechanism. The variation of viscosity plays an important role on the molecular and thermal diffusion.

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