Investigations on the effect of non-uniform temperature on fluid flow and heat transfer in a trapezoidal cavity filled with porous media

Aparna, K.; Seetharamu, K.N.

doi:10.1016/j.ijheatmasstransfer.2016.11.083

Cited by 33 publications

(5 citation statements)

References 39 publications

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“…Code validation method is replicated from K Aparna et al [8]. The comparison between their study and the present study is show in Figures 3 and 4.…”

Section: Code Validationmentioning

confidence: 81%

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A Numerical Investigation of Natural Convection in a Porous Enclosure with Lower Wall Heating

V.M,

et al. 2023

jmmf

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Fluid movement and heat transmission study of consistent and non-consistent heated porous material has emerged as a discrete study field in the last thirty years, owing to its relevance in abundant applications, including waste used in nuclear power plant and fibres insulations, solar collectors, and so on. In recent decades, there has been a surge in interest in studying various elements of the porous media. This enormous level of attention has resulted in a slew of research publications addressing a wide variety of issues affecting porous materials, including understanding their structure, deformation, and natural convective heat transport, to name a few. The investigate of the porous material is one of the classical topics in field of science. In this paper, we investigate the free convection in a trapezoidal porous enclosure with different Rayleigh numbers (10 1 ≤ Ra ≤ 103) and aspect ratios (0.25 ≤ H/L ≤ 1). The effect of Ra and AR on temperature contours, local and mean Nusselt numbers has been analyzed and presented. This provided a result in which the mean Nu increased by increasing the H/L ratio and Modified Ra. In addition, convection mode is dominant when Rayleigh number is high. The outcome results are differentiated with those found in the literature and were found to be in good accordance.

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“…Code validation method is replicated from K Aparna et al [8]. The comparison between their study and the present study is show in Figures 3 and 4.…”

Section: Code Validationmentioning

confidence: 81%

“…K. Aparna et al [8] studied free natural convection in trapezoidal shape cavity with porous matrix. The lower wall temperature was changed uniformly and non-uniformly, top wall was cooled, and side boundaries were adiabatic.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Investigation of Natural Convection in a Porous Enclosure with Lower Wall Heating

V.M,

et al. 2023

jmmf

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“…The finite element method's Galerkin weighted residual methodology is used to solve the reduced equations in this study, following the solution of governing equations through the penalty method. Aparna and Seetharamu [23] conducted a study in a porous trapezoidal chamber with a bottom wall that was heated uniformly and non-uniformly, using a finite element computational approach. The study presented in Ref.…”

Section: Grmentioning

confidence: 99%

Finite element analysis of convective heat transfer in a linearly heated porous trapezoidal cavity in the presence of a magnetic field

Suchana,

Ali

2023

Preprint

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A computational study is carried out to examine how a magnetic field affects convective heat transfer in a linearly heated trapezoidal cavity, filled with a fluid-saturated by porous medium. Both inclined walls are adiabatic, with the top wall maintaining a constant cooled temperature Tc which is moving with a constant velocity U0 in the positive x-axis direction, and the bottom wall being heated linearly which is moving with a constant velocity that is the same as that of the top wall but in the opposite direction. The finite element technique is utilized to resolve the governing equations associated with appropriate initial and boundary conditions. The resulting solutions are represented graphically in respect of streamlines, isothermal lines, and thermal gradient magnitude for an extensive range of Darcy numbers (10− 2 ≤ Da ≤ 10− 5), Hartmann numbers (0 ≤ Ha ≤ 100), and Prandtl numbers (0.7 ≤ Pr ≤ 15). The findings indicate the enhancement of flow circulation concerning the higher values of Darcy number but the reduction of that with the higher values of Hartmann number as well as Prandtl number. In addition, the temperature distribution is affected by various values of the Darcy number and Hartmann number. It is also reflected that the rate of convective heat transfer declines with the growing values of the Hartmann number and the decreasing values of the Darcy number and Prandtl number.

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“…They examined that minimization in entropy and a larger heat transfer rate occurs due to distinct heat induction and contaminant source. The natural convective flow in a trapezoidal cavity was assessed by Aparna and Seetharamu (2017) under the thermally variable boundary impact. They stated that rate of heat transfer at the bottom wall increases as opposed to variable temperature under the influence of specific temperature.…”

Section: Introductionmentioning

confidence: 99%

Simulations of micropolar nanofluid-equipped natural convective-driven flow in a cavity

Ullah

Nadeem

McCash

et al. 2021

HFF

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Purpose This paper aims to focus on the natural convective flow analysis of micropolar nanofluid fluid in a rectangular vertical container. A heated source is placed in the lower wall to generate the internal flow. In further assumptions, the left/right wall are kept cool, while the upper and lower remaining portions are insulated. Free convection prevails in the regime because of thermal difference in-between the lower warmer and upper colder region. Design/methodology/approach The physical setup owns mathematical framework in-terms of non-linear partial differential equations. For the solution purpose of the differential system, finite volume method is adopted. The interesting features of the flow along with thermal transportation involve both translational and rotational movement of fluid particles. Findings Performing the simulations towards flow controlling variables the outputs are put together in contour maps and line graphs. It is indicated that the variations in flow profile mass concentration and temperature field augments at higher Rayleigh parameter because of stronger buoyancy effects. Higher viscosity coefficient implies decrease in flow and thermal transportation. Further, the average heat transfer rate also grows by increasing both the Rayleigh parameter and heated source length. Originality/value To the best of the authors’ knowledge, no such study has been addressed yet. Further, the results are validated by comparing with previously published work.

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Investigations on the effect of non-uniform temperature on fluid flow and heat transfer in a trapezoidal cavity filled with porous media

Cited by 33 publications

References 39 publications

A Numerical Investigation of Natural Convection in a Porous Enclosure with Lower Wall Heating

A Numerical Investigation of Natural Convection in a Porous Enclosure with Lower Wall Heating

Finite element analysis of convective heat transfer in a linearly heated porous trapezoidal cavity in the presence of a magnetic field

Simulations of micropolar nanofluid-equipped natural convective-driven flow in a cavity

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