Effect of water-based Al2O3 nanofluids on heat transfer and pressure drop in periodic mixed convection inside a square ventilated cavity

Sourtiji, E.; Hosseinizadeh, S.F.; Gorji-Bandpy, M.; Ganji, D.D.

doi:10.1016/j.icheatmasstransfer.2011.05.009

Cited by 34 publications

(10 citation statements)

References 23 publications

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“…The results revealed that the thermal conductivity of nanofluids depends to various parameters such as interfacial layer at the particle/liquid interface [3], nanoparticle size and shape [4], nanoparticle clustering [5], Brownian motion of the nanoparticle in the base fluid [6], temperature and volume fraction concentration of the nanoparticles in the base fluid. In the recent years many researches have investigated numerically and experimentally the enhancement of heat transfer utilizing nanofluids [7][8][9][10][11][12][13]. Aminossadati [14] performed a numerical analysis of natural cooling of a right triangular heat source by a CuO-water nanofluid in a right triangular cavity that is under the influence of a horizontal magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of mixed convection characteristics inside a ventilated cavity including the effects of nanoparticle suspensions

Sourtiji

Gorji-Bandpy

2017

THERM SCI

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A numerical study of mixed convection flow and heat transfer inside a square cavity with inlet and outlet ports is performed. The position of the inlet port is fixed but the location of the outlet port is varied along the four walls of the cavity to investigate the best position corresponding to maximum heat transfer rate and minimum pressure drop in the cavity. It is seen that the overall Nusselt number and pressure drop coefficient vary drastically depending on the Reynolds and Richardson numbers and the position of the outlet port. As the Richardson number increases, the overall Nusselt number generally rises for all cases investigated. It is deduced that placing the outlet port on the right side of the top wall is the best position that leads to the greatest overall Nusselt number and lower pressure drop coefficient. Finally, the effects of nanoparticles on heat transfer are investigated for the best position of the outlet port. It is found that an enhancement of heat transfer and pressure drop is seen in the presence of nanoparticles and augments with solid volume fraction of the nanofluid. It is also observed that the effects of nanoparticles on heat transfer at low Richardson numbers is more than that of high Richardson numbers.

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Section: Introductionmentioning

confidence: 99%

Numerical analysis of mixed convection characteristics inside a ventilated cavity including the effects of nanoparticle suspensions

Sourtiji

Gorji-Bandpy

2017

THERM SCI

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“…The authors found that the presence of nanoparticles is more effective in Bottom-Top configuration in comparison with other configurations, while the increase in solid concentration has the least effects in Top-Top configuration. Another study of unsteady mixed convection flows through an alumina-water nanofluid in a ventilated square cavity was performed by Sourtiji et al (2011) for the TopBottom configuration. It was observed that the heat transfer is enhanced for all the Strouhal and Richardson numbers investigated by adding nanoparticles to the base fluid.…”

Section: Introductionmentioning

confidence: 99%

Mixed Convection Heat Transfer Enhancement in a Vented Cavity Filled with a Nanofluid

Bahlaoui

Raji

Hasnaoui

et al. 2016

JAFM

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“…In this line of research, highlights are the works of Radhakrishnan et al (2007), Rahman et al (2008), Ghasemi and Aminossadati (2008), Rahman et al (2012) and Belmiloud and Sad chemloul (2015). Ventilated cavities with no elements inside are less common, but no less important, as the studies by Mahmoudi et al (2010), Sourtiji et al (2011) and Sourtiji et al (2014). In general, three kinds of convection, natural, forced and mixed, are present in studies of ventilated cavities without internal elements.…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study of Convection Flow in an Open Water Cavity

Mioralli¹,

Avallone²,

Scalon³

et al. 2016

Procceedings of the 16th Brazilian Congress of Thermal Sciences and Engineering

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The development of new technologies of solar energy and its optimization necessarily involves studying the behavior of the energy stored inside the thermal reservoir. A simple way to estimate this behavior is through the analysis of a flow in a cavity with different inlet and outlet of the mass flow. In this study was analized water flow inside the cavity with two openings. The numerical simulation was performed using the computer package open source OpenFOAM®, considering a two-dimensional flow. Simulations were performed considering the effects of the flow field forces and excluding these effects, represented by Richardson Number. The results obtained for the velocity and temperature profiles in the tested cases were presented and the influence of the field forces on the thermal stratification of the water was observed. The results obtained allow to evaluate the influence of the parameters velocity and temperature for the characterization of the obtained thermal stratification inside the solar heater reservoir.

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Effect of water-based Al2O3 nanofluids on heat transfer and pressure drop in periodic mixed convection inside a square ventilated cavity

Cited by 34 publications

References 23 publications

Numerical analysis of mixed convection characteristics inside a ventilated cavity including the effects of nanoparticle suspensions

Numerical analysis of mixed convection characteristics inside a ventilated cavity including the effects of nanoparticle suspensions

Mixed Convection Heat Transfer Enhancement in a Vented Cavity Filled with a Nanofluid

A Numerical Study of Convection Flow in an Open Water Cavity

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