Numerical Simulation of Natural Convection in an Inclined Square Cavity

Munir, Fudhail Abdul; Sidik, Nor Azwadi Che; Ibrahim, Nik Izual Nik

doi:10.3923/jas.2011.373.378

Cited by 13 publications

(7 citation statements)

References 7 publications

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“…Proper treatment of the external forces was a concern. There are few techniques for dealing with the force term for LBM that have been investigated in several papers [35][36][37]. In order to incorporate buoyancy force due to convection in the model, an extra term was added to the collision process as follows [38].…”

Section: Thermal Lattice Boltzmann Modelsmentioning

confidence: 99%

The Use of Thermal Lattice Boltzmann Numerical Scheme for Particle-Laden Channel Flow with a Cavity

Jahanshaloo

Sidik

Salimi

et al. 2014

Numerical Heat Transfer, Part A: Applications

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In this article, particle-laden flow in a channel with heated cavity has been investigated. Calculations were performed using a point force scheme for particle dynamics, while the process of fluid renewal was modeled using the double-population thermal lattice Boltzmann method. Point-particle formulation accounts for the finite-size dispersed phase and the forces acting on the particles were modeled through drag force correlations. Two-way interactions of solid-fluid calculation were considered by adding an external force term for feedback that forced particles in the evolution of fluid distribution function. The method was first validated with steady state flow in a channel with cavity in the presence and absence of a heat source. It was then applied to mixed convection flow laden with particles at various Grashof numbers. The particle dispersion characteristics were examined in detail, where the particle removal rate from cavity upon cavity aspect ratio was emphasized. The effect of the Reynolds number on particle distribution was further investigated numerically by varying the speed of inlet flow into the channel.

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Section: Thermal Lattice Boltzmann Modelsmentioning

confidence: 99%

The Use of Thermal Lattice Boltzmann Numerical Scheme for Particle-Laden Channel Flow with a Cavity

Jahanshaloo

Sidik

Salimi

et al. 2014

Numerical Heat Transfer, Part A: Applications

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“…The authors have chosen the 256 2 grid size and claimed that this grid size gave a grid-independent solution. Since 0% of the volume fraction has been chosen, the condition can be referred as natural convection of pure water in an enclosure [2-5]. However, the rest of the predictions involved a more critical condition, such as the Rayleigh number being greater than 10 6 with a 5% of volume fraction of Al 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Comments on ‘Lattice Boltzmann simulation of alumina-water nanofluid in a square cavity’ by Yurong He, Cong Qi, Yanwei Hu, Bin Qin, Fengchen Li and Yulong Ding

Sidik

Safdari

2012

Nanoscale Res Lett

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“…While, Varol et al [8], investigated the effects of inclination angle on natural convection in an enclosure with corner heater over a wide range of parameters; Rayleigh number; Prandtl number; dimensionless lengths of heater in x and y directions. Munir et al [9], reported the fluid flow behavior and the characteristic of heat transfer from a differentially heated enclosure walls and tilted at various inclination angles using the double distribution function lattice Boltzmann numerical scheme with the same lattice structure. Further, Khezzar et al [10], studied two-dimensional natural convection in fluid filled cavities heated from below with varied inclination angle numerically.…”

Section: Introductionmentioning

confidence: 99%

Natural convection in tilted rectangular cavities due to bidirectional temperature gradient

Benyoucef¹,

Zeroual²,

Benmoussa³

2017

IJHT

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The study by the CFD for a 3D natural convection in a tilted rectangular cavity filled by silicone oil at high Prandtl number has been compared to experimental results. A constant vertical temperature gradient has been performed by subjecting the horizontal walls to temperature Th and Tc; respectively. Other walls are adiabatic except the left small sidewall is differentially heating with temperature TA creating the horizontal temperature gradient. Different values of the lateral heating and the tilt with respect to the horizontal plane are imposed. The results draw dynamic maps. The influence of two factors (TA and ) on the flow pattern and on the convective heat transfer are analysed and discussed. The simulation flow pattern results are close to those obtained experimentally for treated cases with a minimum discrepancy between the both. A spectral analysis is done to show the fluctuations seen on the natural convective flow after the stability caused by the lateral heating and tilted angle; which based on the visualization of the amplitude as a function to the frequency. The results also show a significant impact on the flow fields and the heat transfer performance is improved.

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Numerical Simulation of Natural Convection in an Inclined Square Cavity

Cited by 13 publications

References 7 publications

The Use of Thermal Lattice Boltzmann Numerical Scheme for Particle-Laden Channel Flow with a Cavity

The Use of Thermal Lattice Boltzmann Numerical Scheme for Particle-Laden Channel Flow with a Cavity

Comments on ‘Lattice Boltzmann simulation of alumina-water nanofluid in a square cavity’ by Yurong He, Cong Qi, Yanwei Hu, Bin Qin, Fengchen Li and Yulong Ding

Natural convection in tilted rectangular cavities due to bidirectional temperature gradient

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