Heat Transfer Enhancement of Pulsating Flow in an Open Cavity Subjected to Uniform Magnetic Field

Zamzari, Fatma; Mehrez, Zouhaier; Cafsi, Afif El

doi:10.1134/s0015462819020149

Cited by 9 publications

(4 citation statements)

References 19 publications

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“…Ibrahim [18] imposed the convective boundary conditions along with slip effects in flow of tangent hyperbolic nanofluid over a stretched surface. Some more recent interesting contributions can be seen in the [19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Theoretical analysis of tangent hyperbolic nanoparticles with combined electrical MHD, activation energy and Wu’s slip features: a mathematical model

et al. 2019

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Current study deals with the rheology of non-Newtonian material over moving surface by utilizing the electrical, magnetohydrodynamics and activation energy effects. A famous tangent hyperbolic viscoelastic fluid model has been used in presence of nanoparticles which may extremely useful to enhance the transportation phenomenon. The second order slip effects (Wu’s slip) are also entertained in the boundary conditions. Further, the energy equation occupied the nonlinear thermal radiation while the activation energy expression is carried out in the concentration equation. The highly nonlinear boundary value problem is metamorphosed into ordinary differential equations by means of the suitable variables. These transmuted equations results the self-similar solution which is computed numerically by shooting technique. First, the reported solution is justified after comparing with available resources and detail graphical analysis have been executed for parameters like Weissenberg number mixed convection buoyancy parameters the power law index thermophoresis Brownian constraint and slip parameters Further, the impact of suggested parameters on local Nusselt number and Sherwood number is determined in tabular form. It is found that the slip parameters resulted the weaker momentum boundary layer. The nanoparticles temperature is enhanced by the increasing values of thermophoresis and Brownian motion parameters, Weissenberg and thermal Biot numbers. Further, the convection parameters decrease the nanoparticles concentration while presence of activation energy slightly boosts up the nanoparticles concentration.

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Section: Introductionmentioning

confidence: 99%

Theoretical analysis of tangent hyperbolic nanoparticles with combined electrical MHD, activation energy and Wu’s slip features: a mathematical model

et al. 2019

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“…Al-Farhany et al (2020) solved a combination of convection and heat transfer in an enclosed space with a partly preheated bottom wall, revealing reduced heat transfer with higher Hartmann numbers and increased Nu values with rising Richardson numbers. Zamzari et al (2019) investigated pulsing flows under MHD in a straight channel with an open cavity. Khalili and Sheikholeslami (2023) numerically modeled a solar cell module with a thermoelectric generator using Fe 3 O 4 -water nanofluid under MHD.…”

Section: Introductionmentioning

confidence: 99%

“…Huang et al (2018) examined outside pulsing laminar flow in a groove channel cavity, revealing a significant heat transfer increase at Re = 300. Various studies explored grooved channels (Biswas et al , 2015; Sharma et al , 2016), with Yu et al (2021) reporting an increased heat transfer rate with reduced groove space.…”

Section: Introductionmentioning

confidence: 99%

Effects of heater positions on magneto-hydrodynamic convection of CuO-water nanofluid flow in a grooved channel

Rahaman,

Biswas,

Santra

et al. 2024

HFF

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Purpose This study aims to delve into the coupled mixed convective heat transport process within a grooved channel cavity using CuO-water nanofluid and an inclined magnetic field. The cavity undergoes isothermal heating from the bottom, with variations in the positions of heated walls across the grooved channel. The aim is to assess the impact of heater positions on thermal performance and identify the most effective configuration. Design/methodology/approach Numerical solutions to the evolved transport equations are obtained using a finite volume method-based indigenous solver. The dimensionless parameters of Reynolds number (1 ≤ Re ≤ 500), Richardson number (0.1 ≤ Ri ≤ 100), Hartmann number (0 ≤ Ha ≤ 70) and magnetic field inclination angle (0° ≤ γ ≤ 180°) are considered. The solved variables generate both local and global variables after discretization using the semi-implicit method for pressure linked equations algorithm on nonuniform grids. Findings The study reveals that optimal heat transfer occurs when the heater is positioned at the right corner of the grooved cavity. Heat transfer augmentation ranges from 0.5% to 168.53% for Re = 50 to 300 compared to the bottom-heated case. The magnetic field’s orientation significantly influences the average heat transfer, initially rising and then declining with increasing inclination angle. Overall, this analysis underscores the effectiveness of heater positions in achieving superior thermal performance in a grooved channel cavity. Research limitations/implications This concept can be extended to explore enhanced thermal performance under various thermal boundary conditions, considering wall curvature effects, different geometry orientations and the presence of porous structures, either numerically or experimentally. Practical implications The findings are applicable across diverse fields, including biomedical systems, heat exchanging devices, electronic cooling systems, food processing, drying processes, crystallization, mixing processes and beyond. Originality/value This work provides a novel exploration of CuO-water nanofluid flow in mixed convection within a grooved channel cavity under the influence of an inclined magnetic field. The influence of different heater positions on thermomagnetic convection in such a cavity has not been extensively investigated before, contributing to the originality and value of this research.

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“…The flow within a square enclosure was taken by Yasmin et al [25] to analyze the heat transport and flow features of MHD Cassonna nanofluids. Further investigations on cavity flows can be found in [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Numerical Assessment of Dipole Interaction with the Single-Phase Nanofluid Flow in an Enclosure: A Pseudo-Transient Approach

Ayub

Ahmad

et al. 2022

Materials

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Nanofluids substantially enhance the physical and thermal characteristics of the base or conducting fluids specifically when interacting with the magnetic field. Several engineering processes like geothermal energy extraction, metal casting, nuclear reactor coolers, nuclear fusion, magnetohydrodynamics flow meters, petrochemicals, and pumps incorporate magnetic field interaction with the nanofluids. On the other hand, an enhancement in heat transfer due to nanofluids is essentially required in various thermal systems. The goal of this study is to figure out that how much a magnetic field affects nanofluid flow in an enclosure because of a dipole. The nanofluid is characterized using a single-phase model, and the governing partial differential equations are computed numerically. A Pseudo time based numerical algorithm is developed to numerically solve the problem. It can be deduced that the Reynolds number and the magnetic parameter have a low effect on the Nusselt number and skin friction. The Nusselt number rises near the dipole location because of an increase in the magnetic parameter Mn and the Reynolds number Re. The imposed magnetic field alters the region of high temperature nearby the dipole, while newly generated vortices rotate in alternate directions. Furthermore, nanoparticle volume fraction causes a slight change in the skin friction while it marginally reduces the Nusselt number.

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Heat Transfer Enhancement of Pulsating Flow in an Open Cavity Subjected to Uniform Magnetic Field

Cited by 9 publications

References 19 publications

Theoretical analysis of tangent hyperbolic nanoparticles with combined electrical MHD, activation energy and Wu’s slip features: a mathematical model

Theoretical analysis of tangent hyperbolic nanoparticles with combined electrical MHD, activation energy and Wu’s slip features: a mathematical model

Effects of heater positions on magneto-hydrodynamic convection of CuO-water nanofluid flow in a grooved channel

Numerical Assessment of Dipole Interaction with the Single-Phase Nanofluid Flow in an Enclosure: A Pseudo-Transient Approach

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