Effects of thermal boundary conditions on natural convection flows within a square cavity

Basak, Tanmay; Roy, S.; Balakrishnan, A.

doi:10.1016/j.ijheatmasstransfer.2006.05.015

Cited by 294 publications

(165 citation statements)

References 19 publications

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“…Moreover, two-dimensional laminar natural convection in enclosures with three flat and one wavy wall, one of which was exposed to sinusoidal temperature profile, was studied by Dalal and Das [12]. Basak et al [13] solved the governing equations using the finite element method to study the effects of thermal boundary condition in square enclosures. They numerically tested the effects of Prandtl number and observed that the non-uniform heating of the bottom wall produced greater heat transfer rates at the center of the bottom wall than the uniform heating case for the whole range of Rayleigh numbers.…”

Section: Introductionmentioning

confidence: 99%

A heatline analysis of natural convection in a square inclined enclosure filled with a CuO nanofluid under non-uniform wall heating condition

Öztop¹,

Mobedi²,

Abu‐Nada³

et al. 2012

International Journal of Heat and Mass Transfer

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a b s t r a c tHeatline visualization technique is used to understand heat transport path in an inclined non-uniformly heated enclosure filled with water based CuO nanofluid. The cavity has square cross-section and it is nonuniformly heated from a wall and cooled from opposite wall while other walls are adiabatic. The governing equations which are continuity, momentum and energy equations are solved using finite volume method. The dimensionless heatfunction for nanofluid heat flow is defined and solved to determine heatline patterns. Calculations were performed for Rayleigh numbers of 10 3 , 10 4 and 10 5, inclination angle of 0°, 30°, 60°and 90°, and nanoparticle fraction of 0, 0.02, 0.04, 0.06, 0.08 and 0.1. It is observed that heat transfer in the cavity increases by adding nanoparticles. The rate of increase is greater for the enclosures with low Rayleigh number. Visualization of heatline is successfully applied to nanoparticle convective flows. Based on the heatline patterns, three heat transfer regions are observed and discussed in details.

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Section: Introductionmentioning

confidence: 99%

A heatline analysis of natural convection in a square inclined enclosure filled with a CuO nanofluid under non-uniform wall heating condition

Öztop¹,

Mobedi²,

Abu‐Nada³

et al. 2012

International Journal of Heat and Mass Transfer

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“…In 2006 effects of thermal boundary conditions of natural convection in a square enclosure were studied [20].…”

Section: Author Model (Year)mentioning

confidence: 99%

A review on experimental research using scale models for buildings: Application and methodologies

Lirola

Castañeda

Lauret

et al. 2017

Energy and Buildings

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a b s t r a c tA complete review on scale model testing for buildings, considering a wide range of methodologies and new manufacturing techniques, in areas such as statics and dynamics, acoustics, lighting, aerodynamics and thermodynamics for energy efficiency is presented. On the one hand, scale model testing for buildings require different considerations and techniques and are usually focused on one specific physical field contributing to the information scattering. On the other hand, they are sometimes too general, theoretical or unpractical. Although commercial computer simulations are first option among professionals, they necessarily simplify complex phenomena and ignore, among other aspects, size effects and latest findings in fractals. The potential of complementary experiments using new manufactured scale models for buildings is raising, however, it is still missing a practical overview through different physical fields specifically for buildings with these considerations. This review gives a wide perspective and unified scope on uses and possibilities of scale model testing for buildings, from the traditional configurations of Leon Battiste Alberti to new possibilities applying complex physics and new techniques of 3D-modelling.

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“…Xuan and Roetzel [3] discussed about the conceptions of heat transfer correlation of nanofluids. Basak et al [4] reported on effects of thermal boundary conditions on natural convection flows within a square cavity. He et al [5] described about heat transfer and flow behaviour of aqueous suspensions of TiO2 nanofluids flowing upward through a vertical pipe.…”

Section: Literature Reviewmentioning

confidence: 99%

Numerical Studies on Cooling Of Electronics Module Using Nzo, an and Mg Water Based Nanofluids

Kund¹

2017

IJRASET

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Effects of thermal boundary conditions on natural convection flows within a square cavity

Cited by 294 publications

References 19 publications

A heatline analysis of natural convection in a square inclined enclosure filled with a CuO nanofluid under non-uniform wall heating condition

A heatline analysis of natural convection in a square inclined enclosure filled with a CuO nanofluid under non-uniform wall heating condition

A review on experimental research using scale models for buildings: Application and methodologies

Numerical Studies on Cooling Of Electronics Module Using Nzo, an and Mg Water Based Nanofluids

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