Numerical analysis of mixed convection at various walls speed ratios in two-sided lid-driven cavity partially heated and filled with nanofluid

Jmai, Ridha; Ben-Beya, Brahim; Tong, Lili

doi:10.1016/j.molliq.2016.05.076

Cited by 24 publications

(12 citation statements)

References 48 publications

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“…Present results of velocity ratio compared with Jmai et al 13 [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Code Justificationmentioning

confidence: 80%

“…Introduction of a moving flat plate in the midsection of the cavity helps trigger the rate of heat transfer 11,12 . In the latest research, it has been observed that the speed ratio of the moving wall in a lid‐driven cavity leads to an increased rate of heat transfer, as established by Jmai et al 13 and Nithyadevi et al 14 …”

Section: Introductionmentioning

confidence: 91%

“…A grid independence test was performed with different grid sizes to ensure the accuracy of the problem, and it was concluded that a grid size of 121 × 121 established the grid‐independent solution. The principal assesment was done by validating the finite‐volume method with the experimental work of Calcagni et al, 21 and the next evaluation was done by validating with the work of Jmai et al, 13 considering flow fields and temperature fields at diverse λ wall speed ratios in Figures 2 and 3, respectively. It should be concluded that the result after the evaluation provides a satisfactory assurance of the existing mathematical work.…”

Section: Code Justificationmentioning

confidence: 99%

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Analysis of mixed convection in an inclined square cavity using nanofluids with Vajjha and Das' nanofluid model

Begum

Chamkha

2021

Heat Trans

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In this article, the effects of angle of inclination on heat transfer by mixed convection have been analyzed numerically in a square cavity packed with a CuO nanofluid. Cavity boundaries are constructed by having sinusoidal varying temperature on sidewalls, inactive horizontal walls, and the hot passing plate at the center of the cavity. The transport equations for fluid and heat are solved using the finite‐volume method with SIMPLE algorithm. The Richardson number (Ri) varying from 0.01 to 100, inclination angle (γ) from 0° to 90°, wall speed ratios (λ) from 0 to 3 and volume fraction of nanoparticles (φ) from 0.0 to 0.1 are given and represented in the form of flow fields, temperature fields, and mean heat transfer graphs. It is detected that the principal flow constraints have a substantial impact on the flow lines and thermal lines. Specifically, the structures of cavity inclination, existence of copper nanoparticles, and the hot wall in motion at the midpoint of the cavity are established to enrich the overall rate of heat transfer. Correspondingly, in the present study, the Vajjha and Das model is taken into account for the effective thermal conductivity and viscosity of the nanofluid; application of this model is beneficial for the industries working in a high‐temperature environment.

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“…Present results of velocity ratio compared with Jmai et al 13 [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Code Justificationmentioning

confidence: 80%

Section: Introductionmentioning

confidence: 91%

Section: Code Justificationmentioning

confidence: 99%

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Analysis of mixed convection in an inclined square cavity using nanofluids with Vajjha and Das' nanofluid model

Begum

Chamkha

2021

Heat Trans

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“…The effects of new parameters could be tested on such benchmark and obtained results could be generalized to other more complex geometries and applications. Examples of the flow study in cavity applications are: Chemical reactors, 1 chemical vapor deposition instruments and equipment, 2 oil extraction, effectiveness increase of heat exchangers, thermal management of electric coolers, the effective area of electromagnetic fields, 3,4 solar energy collectors 5 and so many other applications. Therefore, various aspects of lid-driven cavity flow have been investigated in numerous studies which some of the recent investigations are surveyed in the following.…”

Section: Literature Surveymentioning

confidence: 99%

Effect of strength and direction of external magnetic field on dynamics of vortices in a square lid-driven cavity flow

Hadidi

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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In this study, the effect of magnetic field strength and its direction are considered on square lid-driven cavity flow. The whole range of applicable magnetic field strength which is used in practice up to now (0 to 10 Tesla) is accomplished in this research. The governing equations, including non-linear conservative equations of continuity, momentum and magnetic field equations are solved numerically. Continuity and momentum equations are solved by the finite volume method using SIMPLE algorithm, where the finite difference method is used in the magnetic field equation solving. In this research the effect of magnetic field on the velocity distribution, streamlines and vortex flow show that the vortices of the cavity shrink (decreases) up to 0.01 T where the uniform and vertical magnetic field applied from the bottom surface of the square cavity. For the magnetic field of 0.01 T, vortices in the cavity flow disappear. Higher values of the magnetic field create larger vortices. It was also concluded that the magnetic field has a strong effect on vortex formation, its size and location; therefore it can be used to control the vortex dynamics in a contactless way.

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“…He has concluded that for all thermal phase deviations, heat transfer and Nusselt number would enhance as the Richman number decreases. In a similar study by Jmai et al [22] the effect of different walls velocity ratios on heat transfer were investigated. They modeled a double lid driven Nanofluid filled cavity and impose partial heating to analyze mixed convection.…”

Section: Introductionmentioning

confidence: 99%

Different shapes of Fe3O4 nanoparticles on the free convection and entropy generation in a wavy-wall square cavity filled by power-law non-Newtonian nanofluid

Hatami¹

2018

IJHT

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The goal of this paper is to investigate the influences of Nanoparticles volume fraction, Nanoparticles shape, amplitude and wavelength of wavy surface, Hartmann number and the Angle of magnetic field on the Nusselt number, Bejan number and the entropy generation rate in a wavy wall cavity, numerically. The nanoparticles are considered Fe3O4 which are magnetic in presence of magnetic and the base fluid is considered as a power-law non-Newtonian nanofluid which its density variation is approximated by the standard Boussinesq model. The wavy wall is maintained in low temperatures while the right wall has high temperature and up/down walls is insulated. The problem is solved by finite element method using FlexPDE commercial code and found that the highest average Nusselt number is observed for the Nanofluid with brick shaped particles; however, the Nanofluid with spherical shaped particles is found to have the lowest Nusselt. Furthermore, Minimum and maximum Bejan numbers were observed for brick and spherical nanoparticles, respectively.

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Numerical analysis of mixed convection at various walls speed ratios in two-sided lid-driven cavity partially heated and filled with nanofluid

Cited by 24 publications

References 48 publications

Analysis of mixed convection in an inclined square cavity using nanofluids with Vajjha and Das' nanofluid model

Analysis of mixed convection in an inclined square cavity using nanofluids with Vajjha and Das' nanofluid model

Effect of strength and direction of external magnetic field on dynamics of vortices in a square lid-driven cavity flow

Different shapes of Fe3O4 nanoparticles on the free convection and entropy generation in a wavy-wall square cavity filled by power-law non-Newtonian nanofluid

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