scholarly journals Effect of Dispersion on Solutal Convection in Porous Media

2018 ◽  
Vol 45 (18) ◽  
pp. 9690-9698 ◽  
Author(s):  
Yu Liang ◽  
Baole Wen ◽  
Marc A. Hesse ◽  
David DiCarlo
Keyword(s):  
Porous Media ◽  
Solutal Convection ◽  
Convection In Porous Media

Numerical Analysis of Thermal-Solutal Convection in Heterogeneous Porous Media

2005 ◽  
Vol 73 (1) ◽  
pp. 21-25 ◽  
Author(s):  
Charles-Guobing Jiang ◽  
M. Ziad Saghir ◽  
M. Kawaji
Keyword(s):  
Porous Media ◽  
Thermal Diffusion ◽  
Soret Effect ◽  
Heterogeneous Porous Media ◽  
Soret Coefficient ◽  
Solutal Convection ◽  
Coefficient Distribution ◽  
Separation Ratio ◽  
Diffusion In Porous Media ◽  
Vertical Cavity

Thermal diffusion, or Soret effect, in porous media is mathematically modeled with the Firoozabadi model based on non-equilibrium thermodynamics. The Soret effect in a binary mixture is investigated in a vertical cavity with heterogeneous permeability, where natural convection can occur. The thermo solutal convection with heterogeneous permeability was studied in terms of flow pattern, concentration distribution, component separation ratio, and Soret coefficient distribution. A consistent analysis was conducted and it is concluded that the Soret coefficient of thermal diffusion in porous media strongly depends on the heterogeneity of permeability.

Using Direct Numerical Simulations for Investigating Physics of Turbulence in Porous Media

2017 ◽  
Author(s):  
Y. Jin ◽  
A. V. Kuznetsov
Keyword(s):  
Porous Media ◽  
Turbulence Models ◽  
Maximum Size ◽  
Reynolds Numbers ◽  
Direct Numerical Simulations ◽  
Velocity Measurements ◽  
Turbulent Eddies ◽  
Size Limitation ◽  
Large Eddies ◽  
Convection In Porous Media

One of the most controversial topics in the field of convection in porous media is the issue of macroscopic turbulence. It remains unclear whether it can occur in porous media. It is difficult to carry out velocity measurements within porous media, as they are typically optically opaque. At the same time, it is now possible to conduct a definitive direct numerical simulation (DNS) study of this phenomenon. We examine the processes that take place in porous media at large Reynolds numbers, attempting to accurately describe them and analyze whether they can be labeled as true turbulence. In contrast to existing work on turbulence in porous media, which relies on certain turbulence models, DNS allows one to understand the phenomenon in all its complexity by directly resolving all the scales of motion. Our results suggest that the size of the pores determines the maximum size of the turbulent eddies. If the size of turbulent eddies cannot exceed the size of the pores, then turbulent phenomena in porous media differ from turbulence in clear fluids. Indeed, this size limitation must have an impact on the energy cascade, for in clear fluids the turbulent kinetic energy is predominantly contained within large eddies.

scholarly journals Numerical simulation of salt finger convection in porous media

2008 ◽  
Vol 57 (4) ◽  
pp. 2306
Author(s):  
Luo Ying-Ying ◽  
Zhan Jie-Min ◽  
Li Yok-Sheung
Keyword(s):  
Numerical Simulation ◽  
Porous Media ◽  
Convection In Porous Media

Natural Convection In Porous Media

10.2118/6813 ◽  
1968 ◽  
Author(s):  
K. Aziz ◽  
P.H. Holt ◽  
P.S. Karra
Keyword(s):  
Porous Media ◽  
Natural Convection ◽  
Convection In Porous Media
Sign in / Sign up

Export Citation Format

Share Document