Entropy generation in concentric annuli of 400 kV gas-insulated transmission line

Hashemi-Tilehnoee, M.; Tashakor, S.; Dogonchi, A.S.; Khaleghi, M.

doi:10.1016/j.tsep.2020.100614

Cited by 13 publications

(6 citation statements)

References 27 publications

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“…The transformed solutions of Equations (39), (40) and (41) with the boundary conditions (42) and (43) specified by,…”

Section: Formulation and Solution Of The Problemmentioning

confidence: 99%

“…Dogonchi et al [39] described the importance of the Cattaneo-Christov theory of heat conduction in a triangular enclosure with a semi-circular heater subjected to Fe 3 O 4 -H 2 O nanofluid, heat generation and shape factor of nanoparticles and viscosity dependent on magnetic field is taken into consideration to simulate ferrofluid viscosity. Hashemi-Tilehnoee et al [40] studied entropy generation analysis in the concentric annuli of a gas insulation transmission line enclosure loaded with air and SF 6 -N 2 mixture gas. Singh et al [41] presented for the MHD convective flow of visco-elastic fluid through a vertical channel bounded by the porous regime with Hall current and induced magnetic field effects.…”

Section: Introductionmentioning

confidence: 99%

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Hall and ion slip effects on magnetohydrodynamic convective rotating flow of Jeffreys fluid over an impulsively moving vertical plate embedded in a saturated porous medium with Ramped wall temperature

Krishna

Chamkha

2020

Numerical Methods Partial

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In the present study, it is explored theoretically Hall and ion slip effects on the unsteady magnetohydrodynamic (MHD) rotating flow of a viscous, incompressible electrically conducting, and optically thick radiating Jeffreys fluid over an impulsively, moving vertical plate embedded in a saturated porous medium, when the temperature of the plate has a provisionally ramped profile. The exact solutions of the governing equations for the flow domain are attained by making use of the Laplace transform method. The specified analytical solutions are also acquired for some limiting cases. The research phrases of engineering curiosity for skin friction and Nusselt number are originated for both ramped wall temperature and the isothermal plate. Sherwood number is also obtained. The numerical results of velocity, temperature, and concentration distributions are exhibited graphically whereas skin friction, Nusselt number, and also Sherwood number are mentioned in a table form. It is observed that on either cases of ramped wall temperature and isothermal plate, the resultant velocity enhances with an increase in Hall and ion slip parameters. Reversal behavior is observed with an increase in magnetic field parameter, Jeffreys fluid parameter and Prandtl number. Thermal and concentration buoyancy forces and thermal radiation tend to accelerate the resultant velocity throughout the boundary layer region. The temperature reduces with an increase in Prandtl number and reverse

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“…The transformed solutions of Equations (39), (40) and (41) with the boundary conditions (42) and (43) specified by,…”

Section: Formulation and Solution Of The Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hall and ion slip effects on magnetohydrodynamic convective rotating flow of Jeffreys fluid over an impulsively moving vertical plate embedded in a saturated porous medium with Ramped wall temperature

Krishna

Chamkha

2020

Numerical Methods Partial

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“…The amount of radiation was also calculated while calculating the impact of the parameters of the Prandtl number and Nusselt number [ [35] , [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] , [44] ]. Also, researchers have conducted many studies in the field of heat flow analysis, displacement, and entropy effects around the semi-annular chamber with different nanofluids [ [45] , [46] , [47] , [48] ]. The primary purpose of this essay is to show the impact of magnetism purview aboard hydrothermal operation of nanofluid betwixt two tubes.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of AGM and FEM method for thermal radiation on nanofluid flow between two tubes in nearness of magnetism field

Alizadeh

Takami

Iranmanesh

et al. 2023

Heliyon

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“…e literature review shows that there are many studies about natural convection analysis in enclosures [1][2][3][4][5][6][7][8]. As we know, a considerable amount of energy can be stored by a small amount of Phase Change Materials (PCMs) during a solid to liquid phase change process.…”

Section: Introductionmentioning

confidence: 99%

Impact of Fusion Temperature on Hydrothermal Features of Flow within an Annulus Loaded with Nanoencapsulated Phase Change Materials (NEPCMs) during Natural Convection Process

Seyyedi

Sharifpur

2021

Mathematical Problems in Engineering

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A new type of nanofluids is nanoencapsulated phase change materials (NEPCMs), where nanoparticles are made of a shell and a core. In the current study, characteristics of free convection flow, entropy generation, and heat transfer of NEPCMs in an enclosure are investigated. The enclosure is an annulus between concentric horizontal circular and square cylinders with a porous medium. The governing equations (i.e., continuity, energy, and momentum) are written in the nondimensional form and then numerically solved by the control volume finite element method (CVFEM). The results of the validation are in good agreement with those of the literature. The effects of decision variables on the entropy generation number and the average Nusselt number are investigated. The outcomes discovered that there is a maximum for Nu ave and a minimum for N gen at θ f = 0.4 for each value of the Stefan number. Also, Nu ave and ECOP increase by 8.8% and 24.8%, respectively, while N gen decreases by 12.8% when ϕ increases from 0 (pure fluid) to 0.05 at θ f = 0.4 .

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Entropy generation in concentric annuli of 400 kV gas-insulated transmission line

Cited by 13 publications

References 27 publications

Hall and ion slip effects on magnetohydrodynamic convective rotating flow of Jeffreys fluid over an impulsively moving vertical plate embedded in a saturated porous medium with Ramped wall temperature

Hall and ion slip effects on magnetohydrodynamic convective rotating flow of Jeffreys fluid over an impulsively moving vertical plate embedded in a saturated porous medium with Ramped wall temperature

Evaluation of AGM and FEM method for thermal radiation on nanofluid flow between two tubes in nearness of magnetism field

Impact of Fusion Temperature on Hydrothermal Features of Flow within an Annulus Loaded with Nanoencapsulated Phase Change Materials (NEPCMs) during Natural Convection Process

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