Two-dimensional numerical simulation of thermo-gravitational convection in a vertical porous column filled with a binary fluid mixture

Jiang, Charles; Saghir, M.Z.; Kawaji, Masahiro; Ghorayeb, Kassem

doi:10.1016/j.ijthermalsci.2004.03.001

Cited by 15 publications

(7 citation statements)

References 17 publications

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“…Jiang et a/. [24] studied thermo-gravitational convection for a binary mixture of methane and nbutane in a vertical porous column. Their numerical results revealed that the lighter fluid component migrated to the hot side of the cavity.…”

Section: Onset Of Thermo-solutal Convection With So Ret Effectmentioning

confidence: 99%

Thermo-solutal convection with Soret effect

Rahman¹

2021

Preprint

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In the present study, the onset of thermal convection in a liquid layer overlying a porous layer where the whole system is being laterally heated is investigated. The non-linear two-dimensional Navier Stokes equations, the energy equation, the mass balance equation and the continuity equation are solved for the liquid layer. Instead of the Navier Stokes equations, the Brinkman model is used for the porous layer. The partial differential equations are solved numerically using the finite element technique. A two-dimensional geometrical model with lateral heating is considered. Two different cases are analyzed in this thesis. In the first case, the gravity driven buoyancy convection and the Marangoni convection are studied. For the Marangoni convection, the microgravity condition is considered and the surface tension is assumed to vary linearly with temperature. Different aspect ratios, as well as thickness ratios, are studies in detail for both the buoyancy and the Marangoni convection. Results revealed that for both the buoyancy and the Marangoni cases, flow penetrates into the porous layer, only when the thickness ratio is more than 0.90. In the case of thermo-solutal convection in the presence of Soret effect, it has been found that the isopropanol component goes either towards the hot or the cold walls depending on the fluid mixtures which has been used in the system.

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Section: Onset Of Thermo-solutal Convection With So Ret Effectmentioning

confidence: 99%

Thermo-solutal convection with Soret effect

Rahman¹

2021

Preprint

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“…Simulation of thermo-gravitational convection in a vertical porous column was important enough in diffusion process to Saghir and his team to concentrate on diffusion in porous column filled with a binary fluid mixture. Thus Jiang [25] considered the 2D numerical simulation, the convection effect in a vertical cavity having an aspect ratio of 10 and subject to a lateral heating condition based on the irreversible thermodynamics theory of Shukla and Firoozabadi [13]. The diffusion system was a vertical porous media combined with natural convection flow over a range of permeability from 0.001 to 10000 md.…”

Section: Literature Reviewmentioning

confidence: 99%

Effect of micro vibration from two space platform on liquid mixture during thermodiffusion experiment

Ahadi¹

2021

Preprint

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In the present study, a two-dimensional numerical simulation was carried out for binary mixture. The influence of micro gravity vibration or acceleration on board Iinternational Space Station and FOTON-M3, influence of different cavities size as well as the effect of the sign of the Soret coefficient (fluid flow, heat and mass transfer and concentration) in the solvent were investigated in detail. It must be noted that based on previous experiences with this investigation using the same mixture and cavity by Saghir and Parsa [

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“…These analytical results were compared with the numerical solution. Jiang et al [22] examined numerically the effect of natural convection on the Soret effect in a vertical cavity heated laterally. They used the mathematical model of Shukla and Firoozabadi to calculate molecular diffusion, thermodiffusion, and pressure diffusion coefficients as functions of temperature, pressure, and other physical properties of the binary mixture at each point of the grid.…”

Section: Introductionmentioning

confidence: 99%

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

Aouf

Seladji

2020

Acta Universitatis Sapientiae, Electrical and Mechanical Engineering

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Species 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.

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Two-dimensional numerical simulation of thermo-gravitational convection in a vertical porous column filled with a binary fluid mixture

Cited by 15 publications

References 17 publications

Thermo-solutal convection with Soret effect

Thermo-solutal convection with Soret effect

Effect of micro vibration from two space platform on liquid mixture during thermodiffusion experiment

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

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