Melting heat transfer of a non-Newtonian phase change material in a cylindrical vertical-cavity partially filled porous media

Ghalambaz, Mohammad; Ayoubloo, Kasra Ayoubi; Hajjar, Ahmad

doi:10.1108/hff-08-2019-0620

Cited by 15 publications

(4 citation statements)

References 68 publications

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“…The results showed that the presence of carbon nanotubes reduces and increases the heat transfer rate and the melting time, respectively. Ghalambaz et al (2019aGhalambaz et al ( , 2019b examined the impact of a layer of metal foam on the phase change heat transfer of a PL non-Newtonian PCM in a cylindrical enclosure. The metal foam was an isotropic porous aluminum that could be placed in different locations in the enclosure.…”

Section: Melting Process Of Pcmmentioning

confidence: 99%

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Melting process of PCM with Carreau – Yasuda non-Newtonian behavior in a shell and tube heat exchanger occupied by anisotropic porous medium

Fadaei

Izadi

Assareh

et al. 2022

HFF

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Purpose This study aims to evaluate the melting process of the phase-change RT-35 material in a shell and tube heat exchanger saturated with a porous medium. Titanium porous media with isotropic and inhomogeneous structures are studied. The considered tubes in the shell and tube exchanger are made of copper with specific thicknesses. The phase-change material has a non-Newtonian behavior and follows the endorsed Carreau–Yasuda Model. Design/methodology/approach The enthalpy–porosity method is used for modeling of the melting process. The governing equations were transferred to their dimensionless forms. Finally, the equations are solved by applying the Galerkin finite element method. Findings The findings for different values of the relative permeability (K*) and permeability deviation angle (λ) are represented in the forms of charts, streamlines and constant temperature contours. The considerable effects of the relative permeability (K*) and deviation angle (λ) on the flow line patterns of the melting phase-change material are some of the significant achievements of this works. Originality/value This study was conducted using data from relevant research articles provided by reputable academic sources. The data included in this manuscript have not been published previously and are not under consideration by any other journal.

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Section: Melting Process Of Pcmmentioning

confidence: 99%

“…The Nusselt number was examined for the surface of the hot tube. The local effective Nusselt number for the porous medium on the considered surface was defined according to the base fluid (Ghalambaz et al , 2019a, 2019b): …”

Section: Model Description and Formulationmentioning

confidence: 99%

Melting process of PCM with Carreau – Yasuda non-Newtonian behavior in a shell and tube heat exchanger occupied by anisotropic porous medium

Fadaei

Izadi

Assareh

et al. 2022

HFF

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“…Recently, Selimefendigil and Chamkha [24] found significant changes in the average Nusselt number, which are obtained by varying the location of the porous medium. Ghalambaz et al [25] and Ghalambaz et al [26] investigated the thermal performance of nanoencapsulated phase change material suspension in the composite enclosure. Recently, Aly and Alsedais [27] concluded that at lower Darcy parameters, the existence of a porous sheet in the right region inhibits the suspension flow in this region.…”

Section: Introductionmentioning

confidence: 99%

Free Convection Heat Transfer in Composite Enclosures with Porous and Nanofluid Layers

Alhashash

2023

Advances in Mathematical Physics

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This work conducts a numerical investigation of convection heat transfer within two composite enclosures. These enclosures consist of porous and nanofluidic layers, where the porous layers are saturated with the same nanofluid. The first enclosure has two porous layers of different sizes and permeabilities, while the second is separated by a single porous layer. As the porous layer thickness approaches zero, both enclosures transition to clear nanofluid enclosures. The study uses the Navier–Stokes equations to govern fluid flow in the nanofluid domain and the Brinkman–Forchheimer extended Darcy model to describe flow within the saturated porous layer. Numerical solutions are obtained using an iterative finite difference method. Key parameters studied include the porous thickness ( 0.0 ≤ S ≤ 1.0 ), the nanoparticle volume fraction ( 0.0 ≤ ϕ ≤ 0.05 ), the thermal conductivity ratio ( 0.5 ≤ R k ≤ 10 ), and the Darcy number ( 10 − 5 ≤ D a ≤ 10 − 2 ). Key findings include the observation that the highest heat transfer is achieved at the highest concentration, regardless of the porous layer configuration, permeability value, or thermal conductivity ratio. Specifically, an augmentation in values of N u ― I up to 22% is obtained as concentration is adjusted from 1% to 5%. Similarly, an augmentation in values of N u ― II up to 25% is obtained as concentration is adjusted from 1% to 5%.

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“…Ayoubloo et al (2019) examined the natural convection of pseudo-plastic fluids moving through a cylindrical vertical cavity. Ghalambaz et al (2019) and Ayoubloo et al (2019) scrutinized the heat transfer mechanism during melting in a porous medium. Mishra et al (2019) scrutinized the buoyancy-driven flow with electro-magnetohydrodynamic (EMHD) and chemical effects over a stretching surface using a nonlinear Darcy model.…”

Section: Introductionmentioning

confidence: 99%

Electro-magnetohydrodynamic flow and heat transfer of a third-grade fluid using a Darcy-Brinkman-Forchheimer model

Zhang

Bhatti

Michaelides³

2020

HFF

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Purpose The purpose of this paper is to examine the electro-magnetohydrodynamic behavior of a third-grade non-Newtonian fluid, flowing between a pair of parallel plates in the presence of electric and magnetic fields. The flow medium between the plates is porous. The effects of Joule heating and viscous energy dissipation are studied in the present study. Design/methodology/approach A semi-analytical/numerical method, the differential transform method, is used to obtain solutions for the system of the nonlinear differential governing equations. This solution technique is efficient and may be adapted to solve a variety of nonlinear problems in simple geometries, as it was confirmed by comparisons between the results using this method and those of a fully numerical scheme. Findings The results of the computations show that the Darcy–Brinkman–Forchheimer parameter and the third-grade fluid model parameter retards, whereas both parameters have an inverse effect on the temperature profile because the viscous dissipation increases. The presence of the magnetic field also enhances the temperature profile between the two plates but retards the velocity profile because it generates the opposing Lorenz force. A graphical comparison with previously published results is also presented as a special case of this study. Originality/value The obtained results are new and presented for the first time in the literature.

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Melting heat transfer of a non-Newtonian phase change material in a cylindrical vertical-cavity partially filled porous media

Cited by 15 publications

References 68 publications

Melting process of PCM with Carreau – Yasuda non-Newtonian behavior in a shell and tube heat exchanger occupied by anisotropic porous medium

Melting process of PCM with Carreau – Yasuda non-Newtonian behavior in a shell and tube heat exchanger occupied by anisotropic porous medium

Free Convection Heat Transfer in Composite Enclosures with Porous and Nanofluid Layers

Electro-magnetohydrodynamic flow and heat transfer of a third-grade fluid using a Darcy-Brinkman-Forchheimer model

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