Experimental study of the turbulent free convection over horizontal smooth or grooved surfaces in an open cavity

Kumar, L. Gangadhara Kiran; Kumar, Shailesh Ranjan; Subudhi, Sudhakar

doi:10.1007/s00231-015-1559-6

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…They concluded that the rate of heat transfer rises due to the presence of a baffle in this mode of convection. Kumar et al [49] published an experimental analysis on turbulent free convection in a cavity with a smooth or grooved bottom area in the presence of heat fux. A numerical study on the mixed convective flow of nanoliquids in a grooved channel like solid cylinders with the efffect of magnetic field is carried out by Job and Gunakala [50].…”

Section: Introductionmentioning

confidence: 99%

Convection Heat Transfer of MgO-Ag /Water Magneto-Hybrid Nanoliquid Flow into a Special Porous Enclosure

Mebarek‐Oudina

Redouane

Rajashekhar

2020

AJRESD

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This work explores numerically a computational study of free convection in a grooved porous enclosure filled with water-based hybrid-nanoliquid in the presence of an external magnetic field. To solve the governing equations of the problem, the Galerkin finite element technique is utilized. For a several governing parameters such as Rayleigh number (102≤Ra ≤106), magnetic field parameter (0≤Ha≤100), Darcy number (10-2≤ Da ≤10-4) the results are obtained and discussed via streamlines, isotherms and average Nusselt number. The magnetic field has a good regulating effect for the fluid flow and the heat transfer in porous media

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Section: Introductionmentioning

confidence: 99%

Convection Heat Transfer of MgO-Ag /Water Magneto-Hybrid Nanoliquid Flow into a Special Porous Enclosure

Mebarek‐Oudina

Redouane

Rajashekhar

2020

AJRESD

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“…Sharma et al [36] studied the mixed convection in a grooved channel in the presence of adiabatic baffle and concluded that heat transfer rate increases within the mixed convection regime due to the presence of a baffle. Kumar et al [37] performed an experimental study on turbulent free convection in a cavity having smooth or grooved bottom surface in the presence of heat flux, and they highlighted that temperature distributions fluctuated remarkably for grooved surface than smooth. Job and Gunakala [38] carried out a numerical study on mixed convective flow of nanofluids in a grooved channel including solid cylinders in the presence of magnetic field effect.…”

Section: Introductionmentioning

confidence: 99%

MHD natural convection and entropy generation in a grooved enclosure filled with nanofluid using two-component non-homogeneous model

2020

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In this paper, a computational study of natural convection in a grooved enclosure filled with water-based nanofluid in the presence of external magnetic field is numerically investigated. Two-component non-homogeneous model is introduced to develop the governing partial differential equations. Galerkin finite element method is used to solve the governing equations. The computation is carried out for a wide range of governing parameters such as Rayleigh number (10 3 ≤ Ra ≤ 10 6), magnetic field parameter (10 ≤ Ha ≤ 100) and volume fraction of nanoparticles (0% ≤ ϕ ≤ 5%) with fixed values of remaining parameters. A detailed parametric analysis is performed to show the effects of physical parameters on the fluid flow and temperature distributions within the enclosure via streamlines, isotherms, isoconcentrations, midsectional velocities, average Nusselt number and temperature, respectively. In addition, the entropy generation and Bejan number are also computed and discussed elaborately. The results of the current study are compared to those of previous numerical and experimental studies and found to be in rational agreements. The results ascertain that the average Nusselt number and entropy generation increase with rising Rayleigh number and nanoparticle volume fraction, whereas they decrease with increasing magnetic field strength. Moreover, it is found that the appropriate combination of governing parameters can maximize the heat transfer rate and minimize the entropy generation as well.

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Oberbeck-Boussinesq approximations and geometrical confinement effects of free convection in open cavity

2019

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Experimental study of the turbulent free convection over horizontal smooth or grooved surfaces in an open cavity

Cited by 5 publications

References 18 publications

Convection Heat Transfer of MgO-Ag /Water Magneto-Hybrid Nanoliquid Flow into a Special Porous Enclosure

Convection Heat Transfer of MgO-Ag /Water Magneto-Hybrid Nanoliquid Flow into a Special Porous Enclosure

MHD natural convection and entropy generation in a grooved enclosure filled with nanofluid using two-component non-homogeneous model

Oberbeck-Boussinesq approximations and geometrical confinement effects of free convection in open cavity

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