Dufour and Soret Effects on Square Porous Annulus

Ghazali, Nik Nazri Nik; Badruddin, Irfan Anjum; Badarudin, A.; Tabatabaeikia, Seyedsaeed

doi:10.1155/2014/209753

Cited by 69 publications

(9 citation statements)

References 41 publications

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“…Natural convection in porous medium refers to a case where fluid gets heated due to temperature gradient at different points and moves to areas of lower temperature due to thermal buoyancy. Such studies have been reported for different geometrical and physical parameters of porous fluid combination Yunus Khan et al 2016;Badruddin et al 2007;Prasad et al 1984;Ahmed et al 2011;Zheng et al 2001;Nik-Ghazali. et al 2014).…”

Section: Introductionmentioning

confidence: 87%

Conjugate Double Diffusion in a Square Cavity Divided Into Two Sections

Ahammad¹,

Kamangar²

2017

Frontiers in Heat and Mass Transfer

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The current work discusses the heat and mass transfer due to a solid wall dividing the porous medium into two distinct sections. The left vertical surface of cavity is maintained at constant temperature Th and concentration Ch whereas right vertical surface is kept at isothermal temperature Tc and iso-concentration Cc such that Th>Tc and Ch>Cc. Finite element method is used to solve the governing partial differential equations. The results discussed with respect to thermal conductivity ratio, solid width, buoyancy ratio, Lewis number etc.

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Section: Introductionmentioning

confidence: 87%

Conjugate Double Diffusion in a Square Cavity Divided Into Two Sections

Ahammad¹,

Kamangar²

2017

Frontiers in Heat and Mass Transfer

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“…Another situation which can arise in practice along with cross diffusions is a chemical reaction produced in the medium. This phenomenon plays an important role in petroleum industry, cooling of nuclear reactors, and packed-bed catalytic reactors [8]. In view of the significance Hayat et al [9] presented the Soret and Dufour effects in threedimensional flow over an exponentially stretching surface with porous medium, chemical reaction and heat source/sink.…”

Section: Introductionmentioning

confidence: 99%

Soret and Dufour effects on chemically reacting mixed convection flow in an annulus with Navier slip and convective boundary conditions

Kaladhar¹,

Komuraiah²,

Reddy³

2019

Applied Mathematics and Nonlinear Sciences

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This analysis is to study the incompressible mixed convection laminar Newtonian flow through concentric cylindrical annulus associated with slip and convective boundary conditions. This presentation considered the cross diffusions and chemical reaction effects also. The fluid flow in an annulus is due to the rotation of the outer cylinder with constant velocity. The analysis of such kind of fluid flow is governed by nonlinear partial differential equations. The governing system of equations were mapped into dimensionless system with appropriate transformations. The system has been solved using Homotopy Analysis Method (HAM). The influence of Soret, Dufour, slip parameter and the chemical reaction parameter on velocity, temperature and concentration are investigated, and presented through plots. The maximum values of slip leads to increase in velocity and temperature profiles. Further the impact of boundary conditions on velocity, temperature and concentration are also presented.

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“…The emphasis on the study of natural convection [6][7][8][9][10][11][12][13][14][15][16][17][18], combined radiation and natural convection [19], conjugate heat transfer [20][21][22], and the thermal nonequilibrium approach to investigating heat transfer and fluid flow behavior [23][24][25][26][27] have been reported. In addition to the above, heat and mass transfer [28][29] and heat transfer in square cavities are also discussed in detail [30][31][32][33][34][35][36][37][38][39][40][41][42]. Viscous dissipation is an interesting phenomenon that arises due to friction between the moving fluid and the solid matrix of the porous medium.…”

Section: Introductionmentioning

confidence: 99%

Double Diffusive Convection and the Improvement of Flow in Square Porous Annulus

Ali¹,

Al‐Rashed²,

Alnaqi³

2017

IJERA

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There has been increased interest shown in recent years to investigate the behavior of heat and mass transfer in a square annulus with a porous medium fixed between the inner and outer walls. This paper aims to evaluate the Soret effect arising in the case of heat and mass transfer in a porous medium bounded by a square annulus and subjected to isothermal heating of the inner surfaces as well as the outer horizontal surfaces. The phenomenon is governed by 3 partial differential equations, the momentum, energy and concentration equations, that are coupled together and result in a situation where change in one variable affects the other equations and vice versa. The partial differential equations are converted into finite element equations with the help of the Galerkin method and then solved to predict solution variables such as temperature, stream function and concentration in the porous medium. It is found that the heat transfer rate at the hot wall decreases with increasing viscous dissipation effect in the porous medium.

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Dufour and Soret Effects on Square Porous Annulus

Cited by 69 publications

References 41 publications

Conjugate Double Diffusion in a Square Cavity Divided Into Two Sections

Conjugate Double Diffusion in a Square Cavity Divided Into Two Sections

Soret and Dufour effects on chemically reacting mixed convection flow in an annulus with Navier slip and convective boundary conditions

Double Diffusive Convection and the Improvement of Flow in Square Porous Annulus

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