Numerical analysis of magnetic hybrid Nano-fluid natural convective flow in an adjusted porous trapezoidal enclosure

Chabani, Ines; Mebarek‐Oudina, Fateh; Vaidya, Hanumesh; Ismail, Ahmad Izani Md.

doi:10.1016/j.jmmm.2022.170142

Cited by 77 publications

(23 citation statements)

References 71 publications

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“…Finally, GFEM was invented to solve the abovementioned fundamental equations (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18) and suitable boundary conditions (20)(21)(22). The Galerkin weighted residual approach was utilized to transform these fundamental equations into integral equations.…”

Section: Boundary Conditionsmentioning

confidence: 99%

“…In the last two decades, it was suggested that the use of nanofluids (dissolved nanoparticles in a base fluid) and additional approaches could improve the heat transfer rate. Multiple research studies have shed light on the impact of many factors and techniques on the natural convection and heat transfer rate of nanoliquid in a variety of enclosures [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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The baffle shape effects on natural convection heat transfer in nanofluid-filled permeable container with magnetic field

Abderrahmane

Younis

Mourad

et al. 2023

Preprint

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Enhancing heat transfer rates within enclosures is a topic of considerable interest since it has several technical applications. Most heat transfer research projects focus on increasing the heat transfer rates of thermal systems since this will raise the systems' total efficiency. The geometry of the enclosure might have a substantial impact on heat transfer rates. This research studies quantitatively the natural convection of a nanofluid in a complicated form geometry with many baffle configurations. The system's governing equations were addressed by Galerkin Finite Element Method (GFEM). The main consideration was given to the effects of the following factors: The Darcy number (Da), which ranges from 10− 2 to 10− 5; the Hartmann number (Ha), which ranges from 0 to 100; the volumetric fraction (ϕ), which ranges from 0 to 0.08, and the Rayleigh number (Ra) (102 to 106). The results suggested that raising Ra increases heat transfer discharge, whereas raising Ha and Da decreases it. In terms of heat transmission, case 1 (the case with a wavenumber of 1 and the zigzag pointing outward) is determined to be the optimum cavity structure, as it obtained the highest mean Nusselt (Nuavg) number when compared to other cases. At the highest studied Ra number, growing (ϕ) from 0 to 0.8 improved Nuavg by 25%, while growing Da from 10− 2 to 10− 5 and Ha from 0 to 100 declined Nuavg by 57% and 48%, respectively. The reason for the improvement in the values of the (Nu) is due to the speed of fluid movement within the compartment.

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Section: Boundary Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The baffle shape effects on natural convection heat transfer in nanofluid-filled permeable container with magnetic field

Abderrahmane

Younis

Mourad

et al. 2023

Preprint

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“…They observed that a wedge, a plate, and stagnation point of a flat plate all reduce the fluid temperature when the suction/injection parameter is increased. Some very interesting and novel works related to nanofluids flow and heat transport characteristics have been presented. − …”

Section: Introductionmentioning

confidence: 99%

Investigation of Entropy Production with Thermal Analysis under Soret and Dufour Effects in MHD Flow between Convergent and Divergent Channels

et al. 2023

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Hydromagnetic flow and heat transport have sustainable importance in conventional system design along with high-performance thermal equipment and geothermal energy structures. The current computational study investigates the energy transport and entropy production due to the pressure-driven flow of non-Newtonian fluid filled inside the wedge-shaped channel. The nonlinear radiation flux and uniform magnetic field are incorporated into the flow analysis. To be more precise, non-Newtonian fluid initiates from an inlet with the bound of the parabolic profile and leaves at outlet of a convergent/divergent channel. We assume that the channel flow is adiabatic and influenced by the wall friction. The leading flow equations are modeled via the Carreau fluid model using fundamental conservation laws. The thermodynamical aspect of the system is visualized using a two-phase model and analyses of the entropy equation due to fluid friction, ohmic heating, and diffusion of heat and mass fluxes. The modeled system of equations is normalized using a dimensionless variable mechanism. The system was elevated for the significant variation of controlling parameters. The outcomes obtained from the computational investigation are validated with the theoretical results that are available in the literature. An increasing semivertex angle and Reynolds number increase the converging channel flow. In the core flow zone, an increase in the divergent semiangle causes the flow to decelerate, while near and at the channel wall it causes a slight acceleration. Outcomes designate that the main contribution to the irreversibility is due to ohmic loss, frictional loss, and heat loss. The thermal performance and entropy production is dominant for a diverging flow. The outcomes of this research will assist in comprehending the process of entropy minimization in conjunction with the flow of nanomaterials in a nonuniform channel, which is essential in engineering processes such as the creation of micro machines, supersonic Jets, nozzles, and clean energy.

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“…A very recently Dharmaiah et al, [10] have reviewed nuclear reactor application on Jeffrey fluid flow with Falkner-skan factor, Brownian and thermophoresis, non-linear thermal radiation impacts past a wedge. Chabani et al, [11] have studied Ismail, Numerical analysis of magnetic hybrid Nano-fluid natural convective flow in an adjusted porous trapezoidal enclosure. Mebarek-Oudina [12] has expressed Convective heat transfer of Titania nanofluids of different base fluids in cylindrical annulus with discrete heat source.…”

Section: Introductionmentioning

confidence: 99%

Hall Current and Thermal Radiation Effects on MHD Nanofluid in the Presence of Heat Source/Sink, Brownian Motion and Thermophoresis with Inclined Plates

Gopalam

Annareddy

2023

ARFMTS

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The purpose of present study is to analyse the influence of Hall current and thermal radiation MHD electrically conducting nanofluid flow past a continuously stretching surface with heat absorption/generation in the presence of Brownian motion and Thermophoresis has been explored. Transverse magnetic field with the assumption of small Reynolds number is implemented vertically. Appropriate similarity transformations are utilized to transform the governing partial differential equations into the non-linear ordinary differential equations. Numerical solutions for the dimensionless velocity, temperature and nanoparticle concentration are computed with the help of the shooting method. The impact of each of the Hall current parameter, thermal radiation parameter, Heat source/sink parameter, Brownian motion parameter, thermophoresis parameter and magnetic parameter on velocity, concentration and temperature, is discussed through graphs. The skin friction coefficient, the local Nusselt number and the Sherwood number are calculated numerically to look into the inside behaviour of the emerging parameters. It is witnessed that the flow velocity is a diminishing function of the linear and non-linear thermal radiation parameter. Moreover, mounting values of Brownian motion parameter reduce the nanoparticle concentration profile.

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Numerical analysis of magnetic hybrid Nano-fluid natural convective flow in an adjusted porous trapezoidal enclosure

Cited by 77 publications

References 71 publications

The baffle shape effects on natural convection heat transfer in nanofluid-filled permeable container with magnetic field

The baffle shape effects on natural convection heat transfer in nanofluid-filled permeable container with magnetic field

Investigation of Entropy Production with Thermal Analysis under Soret and Dufour Effects in MHD Flow between Convergent and Divergent Channels

Hall Current and Thermal Radiation Effects on MHD Nanofluid in the Presence of Heat Source/Sink, Brownian Motion and Thermophoresis with Inclined Plates

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