Bejan’s heatline and massline visualization of multi-force effect on convection in a porous enclosure

Kumar, Vinay; Murthy, S. V. S. S. N. V. G. Krishna; Kumar, B. V. Rathish

doi:10.1016/j.ijmecsci.2018.07.026

Cited by 15 publications

(3 citation statements)

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“…Ramzan et al [20] discussed the mixed flux of second grade nanofluid with lipid boundary conditions: an optimal solution. Kumar et al [21] studied Bejan's heat and mass lines ideation of multiforce influence on convection in a pored enclosure. Aurangzaib et al [22] investigated the influence of a fractional slide on an unstable MHD mixed convection stagnationpoint flow of a micropolar fluid towards a porous contraction plate.…”

Section: Introductionmentioning

confidence: 99%

MHD Mixed Convection Nanofluid Flow over Convectively Heated Nonlinear due to an Extending Surface with Soret Effect

et al. 2021

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The aim of this paper is to investigate the flow of MHD mixed convection nanofluid flow under nonlinear heated due to an extending surface. The transfer of heat in nanofluid subject to a magnetic field and boundary conditions of convective is studied to obtain the physical meaning of the convection phenomenon. The governing partial differential equations (PDEs) of the boundary layer are reduced to ordinary differential equations (ODEs) considering a technique of the transformation of similarity. The transformed equations are solved numerically considering the technique of an efficient numerical shooting applying the Runge–Kutta technique scheme from the fourth-fifth order. The results corresponding to the dimensionless speed, temperature, concentration profiles, and the Nusselt number reduced, and the Sherwood numbers are presented by figures to display the physical meaning of the phenomena. A comparison has been made between the obtained results with the previous results obtained by others and agrees with them if the new parameters vanish. The results obtained indicate the impacts of the nondimensional governing parameters, namely, magnetic field parameter M, Soret number Sr, heat source λ, thermal buoyancy parameter λ T , and solutal buoyancy parameter λ C on the flow, temperature, and concentration profiles being discussed and presented graphically.

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Section: Introductionmentioning

confidence: 99%

MHD Mixed Convection Nanofluid Flow over Convectively Heated Nonlinear due to an Extending Surface with Soret Effect

et al. 2021

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“…Natural convection within enclosures has also been investigated using the Bejan heat lines approach in recent years. Vinay et al [19] reported Bejan's heatline and massline visualization of Cross diffusion impact on MHD convection in porous enclosure with multi-forces. Roy et al [20] examined various moving wall boundary effects on mixed convection in a porous enclosure with the heatline approach.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of thermal radiation influence on natural convection in a trapezoidal enclosure: Heat flow visualization through energy flux vectors

Venkatadri¹,

Bég

Rajarajeswari

et al. 2020

International Journal of Mechanical Sciences

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“…Later on, the heatline concept has been illustrated in a limited number of studies [56][57][58][59][60][61][62]. The mathematical modeling of heatline and masslines has been extended for multi-force effects by Kumar et al [63,64].…”

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confidence: 99%

Entropy and multiphysics analysis in a viscous dissipative non-Darcian porous enclosure

2021

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The present article assessed the mathematical model for the entropy generation in free convective heat and mass transfer phenomenon in the thermal and species stratified fluid-saturated non-Darcy porous domain. In this model, the viscous dissipation forces are assumed significant. Moreover, the physical model is exposed to the magnetic forces to accommodate the control over the stratification forces. For a better understanding of the temperature and concentration field, the heat function (H ) and mass function (M) models for the multi-force effect on porous media flow, are proposed in this study by which the directional flow accompanying magnitudes of heat flux and mass flux can be visually manifested. To solve the mathematical model numerically, the finite element method is implemented on the dimensionless form of the governing nonlinear partial differential equations. The obtained results are portrayed by of the streamline, isotherm, isoconcentration contours, and cumulative Nusselt and Sherwood number plots for the parameters associated with the problem with additional heatline and massline contour visuals. Moreover, the thermodynamical attributes of fluid flow are illustrated by the contour plots of the entropy production due to fluid friction, heat transfer, mass transfer, and total entropy. Besides, the other characteristics are delineated by the Bejan number plots for the study of thermodynamic irreversibilities. Here, it is observed that the intensification of thermal buoyancy forces raises the stratification levels in the fluid flow. The high intensity of stratification forces introduces the contra-rotating pair of fluid flow movements. On the other hand, horizontally applied magnetic forces significantly restrict the convective flow of heat and mass fluxes, resulting in a massive drop of entropy generation by viscous dissipation. NomenclatureB Buoyancy ratio Be Bejan Number C Non-dimensional species concentration c Dimensional species concentration c p Specific heat at constant temperature c s Concentration susceptibility a e-mails:

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Bejan’s heatline and massline visualization of multi-force effect on convection in a porous enclosure

Cited by 15 publications

References 69 publications

MHD Mixed Convection Nanofluid Flow over Convectively Heated Nonlinear due to an Extending Surface with Soret Effect

MHD Mixed Convection Nanofluid Flow over Convectively Heated Nonlinear due to an Extending Surface with Soret Effect

Numerical simulation of thermal radiation influence on natural convection in a trapezoidal enclosure: Heat flow visualization through energy flux vectors

Entropy and multiphysics analysis in a viscous dissipative non-Darcian porous enclosure

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