Experimental and numerical investigation of natural convection in tilted square cavity filled with air

Leporini, Mariella; Corvaro, Francesco; Marchetti, Barbara; Polonara, Fabio; Benucci, M.

doi:10.1016/j.expthermflusci.2018.08.023

Cited by 34 publications

(11 citation statements)

References 25 publications

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“…Among them are included the ultrafine particles of zinc, aluminum, and titanium oxides (ZnO, Al 2 O 3 , TiO 2 ). They were investigated experimentally in a variety of energy systems, including heat exchangers, cooling, pool boiling, and transformer systems [20][21][22][23][24][25][26], in addition to extensive numerical simulation studies demonstrating the efficacy of these oxides in promoting heat transfer [27][28][29][30][31][32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Mixed Convection Flow of Magnetized Casson Nanofluid over a Cylindrical Surface

et al. 2022

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This work aimed to establish a numerical simulation of kerosene oil as a host Casson fluid flowing around a cylindrical shape with an applied magnetic field crossing through it, under constant wall temperature boundary conditions. Nanoparticles of zinc, aluminum, and titanium oxides were included to reinforce its thermal characteristics. The governing model was established based on the Tiwari and Das model. Graphical and numerical results for correlated physical quantities were gained through the Keller Box method, with the assistance of MATLAB software (9.2). The combined convection (λ>0 & λ<0), magnetic parameter (M>0), Casson parameter (β>0), and nanosolid volume fraction (0.1≤χ≤0.2) were the parameter ranges considered in this study. According to the current findings, the growth of mixed convection parameter or volume fraction of ultrafine particles contributes to boosting the rate of energy transport, skin friction, and velocity distribution. Zinc oxide–kerosene oil has the highest velocity and temperature, whatever the parameters influencing it.

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Section: Introductionmentioning

confidence: 99%

Mixed Convection Flow of Magnetized Casson Nanofluid over a Cylindrical Surface

et al. 2022

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“…Then, a membrane was introduced to the square cavity to study different aspect of natural convection for different Rayleigh numbers [8]. Two years before, the mechanism of natural convection of air within a square cavity with inferior walls and active side was experimentally and computationally investigated [11]. This last paper showed that the average and maximum velocity, with small values characteristics of natural convection, rise with Rayleigh and even with the angle and attain an extreme value for Ra maximum.…”

Section: Introductionmentioning

confidence: 99%

A Computational Simulation of Steady Natural Convection in an H-Form Cavity

Loukili

Kotrasová

Dutykh

2020

Software Engineering Perspectives in Intelligent Systems

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The simulation of natural convection problem based on the Galerkin finite-element method, with the penalty finite-element formulation of the momentum balance equation, is exploited for accurate solutions of equations describing the problem of H-Form cavity differentially heated side walls. The cavity is occupied by the air whose Prandtl number is Pr=0.71, the fluid is assumed to be steady, viscous and incompressible within thermal convection. A numerical investigation has been made for Rayleigh numbers ranging from 10 to 10 6 for three cases of total internal height aspects of H-Form cavity: 0%, 50%, and 85%. Firstly, the goal is to validate the numerical code used to resolve the equations governing the problem of this work. For that, we present a comparison between the profiles at the point (0.5, 0) for the u-component, and u-component obtained in previous work for simple square cavity. Further, a comparison of the averaged Nusselt number with previous works for simple square cavity is realized in order to ensure the numerical accuracy, and the validity of our considered numerical tool. Secondly, the objective is to investigate on the hydrodynamic effects of Rayleigh number for different total internal height aspects of H-Form cavity on the dynamics of natural convection. Shortly after, the ambition is to assess the heat transfer rate for different Rayleigh number for three cases of internal height aspects.

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“…In [3][4][5][6], considerable attention is paid to the stability of stationary convective flows. The authors have made many studies of flows between flat parallel walls.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of the low-Reynolds flows in the vertical heated caverns

et al. 2019

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The object of research is the critical geometry of a three-dimensional air flow in a cavern between two vertical heated plates. In this rate the convection's contribution to heat transfer will be limited due to thermal conductivity at a fixture temperature drop. A three-dimensional RANS approach closed by the k-w SST turbulence model in conjunction with the energy equation. The model validated and verified by comparison with the experimental results. The results of the work applied in developing of ventilated façades.

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Experimental and numerical investigation of natural convection in tilted square cavity filled with air

Cited by 34 publications

References 25 publications

Mixed Convection Flow of Magnetized Casson Nanofluid over a Cylindrical Surface

Mixed Convection Flow of Magnetized Casson Nanofluid over a Cylindrical Surface

A Computational Simulation of Steady Natural Convection in an H-Form Cavity

Numerical study of the low-Reynolds flows in the vertical heated caverns

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