Thermohaline convection in micropolar ferromagnetic fluid with Soret effect and sparsely distributed porous medium: A Brinkman model

2021 ◽  
Author(s):  
Nirmala P. Ratchagar ◽  
S. Seyalmurugan
Keyword(s):  
Porous Medium ◽  
Soret Effect ◽  
Brinkman Model ◽  
Thermohaline Convection ◽  
Ferromagnetic Fluid

scholarly journals Stability analysis of soret effect on thermohaline convection in dusty ferrofluid saturating a Darcy porous medium

2015 ◽  
Vol 3 (1) ◽  
pp. 37
Author(s):  
R. Sekar ◽  
K. Raju
Keyword(s):  
Porous Medium ◽  
Stability Analysis ◽  
Soret Effect ◽  
Dust Particles ◽  
Stationary Mode ◽  
Free Boundaries ◽  
Thermohaline Convection ◽  
Particle Parameter ◽  
Thermoconvective Instability ◽  
Oscillatory Instabilities

<p>The Soret–driven ferro thermoconvective instability of multi–component fluid in a porous medium heated from below and salted from above in the presence of dust particles subjected to a transverse uniform magnetic field has been analyzed using Darcy model for various values of permeability of the porous medium. The salinity effect has been contained in magnetization and density of the ferrofluid. A small thermal perturbation imparted on the basic state and a linear stability analysis is used for this model for which normal mode technique is applied. An exact solution is obtained for the case of two free boundaries and both stationary and oscillatory instabilities have been investigated. It is found that the system destabilizes only through stationary mode. The non-buoyancy magnetization parameter, the dust particle parameter and the permeability of the porous medium are found to destabilize the system. The results are depicted graphically.</p>

scholarly journals Thermosolutal Convection in a Porous Medium Cavity Subjected to Heat and Mass Flux: A Discrete Fracture Effect

2020 ◽  
Vol 12 (1) ◽  
pp. 86-104
Author(s):  
Zakaria Aouf ◽  
Chakib Seladji
Keyword(s):  
Porous Medium ◽  
Soret Effect ◽  
Heterogeneous Porous Media ◽  
Separation Process ◽  
Thermosolutal Convection ◽  
Cold Wall ◽  
Positive Role ◽  
Industrial Activities ◽  
Discrete Fracture ◽  
The One

AbstractSpecies separation in heterogeneous porous media is a field of interest of many industrial activities. In our investigation, the effect of a single discrete fracture on the thermosolutal convection coupled with the Soret effect have been analyzed. The main results show that the fracture can greatly affect the behavior of the thermogravitational flow and might play a positive role to the separation caused by the Soret effect. Furthermore, the fracture tilted to the cold wall causes a large separation compared to the one tilted to the hot wall with the same angle. Therefore, the separation process could be greatly improved.

scholarly journals Effect of Thermophysical Properties on Coupled Heat and Mass Transfer in Porous Material during Forced Convective Drying

2014 ◽  
Vol 6 ◽  
pp. 830387 ◽  
Author(s):  
Wei Cai ◽  
Lexian Zhu ◽  
Shilin Dong ◽  
Guozhen Xie ◽  
Junming Li
Keyword(s):  
Porous Medium ◽  
Diffusion Coefficient ◽  
Temperature Distribution ◽  
Moisture Content ◽  
Initial Conditions ◽  
Positive Impact ◽  
Soret Effect ◽  
Convective Drying ◽  
Large Temperature ◽  
Kinetics Of

The convective drying kinetics of porous medium was investigated numerically. A mathematical model for forced convective drying was established to estimate the evolution of moisture content and temperature inside multilayered porous medium. The set of coupled partial differential equations with the specified boundary and initial conditions were solved numerically using a MATLAB code. An experimental setup of convective drying had been constructed and validated the theoretical model. The temperature and moisture content of the potato samples were dynamically measured and recorded during the drying process. Results indicate that thermal diffusion coefficient has significant positive impact on temperature distribution and mass diffusion coefficient might directly affect the moisture content distribution. Soret effect has a significant impact on heat flux and temperature distribution in the presence of large temperature gradient.

Analytical Solution of Forced Convection in a Duct of Rectangular Cross Section Saturated by a Porous Medium

2005 ◽  
Vol 128 (6) ◽  
pp. 596-600 ◽  
Author(s):  
Kamel Hooman ◽  
Ali A. Merrikh
Keyword(s):  
Porous Medium ◽  
Forced Convection ◽  
Cross Section ◽  
Viscosity Ratio ◽  
Rectangular Cross Section ◽  
Darcy Number ◽  
Uniform Heat Flux ◽  
Brinkman Model ◽  
Type Solution ◽  
Series Type

A theoretical analysis is presented to investigate thermally and hydrodynamically fully developed forced convection in a duct of rectangular cross section filled with a hyper-porous medium. The Darcy-Brinkman model was adopted in the present analysis. A Fourier series type solution is applied to obtain the exact velocity and temperature distribution within the duct. The case of uniform heat flux on the walls, i.e., the H boundary condition in the terminology of Kays and Crawford (1993, Convective Heat and Mass Transfer, 3rd ed., McGraw-Hill, NY), is treated. Values of the Nusselt number and the friction factor as a function of the aspect ratio, the Darcy number, and the viscosity ratio are reported.

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