New Nusselt number correlations to predict the thermal conductivity of nanofluids

Zerradi, Hicham; Ouaskit, S.; Dezairi, A.; Loulijat, Hamid; Mizani, Soufiya

doi:10.1016/j.apt.2014.02.020

Cited by 41 publications

(23 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At this circumstance, the use of nanofluids with higher thermal conductivity can be considered as a promising solution [17][18][19]. However, in recent years there have been some new efforts to produce a new class of high efficiency heat exchange media, to highlight the effect of nanoparticles during flow past bluff bodies [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics of Nanofuid Flow around an Elliptical Cylinder

Zerradi¹,

Mizani²,

Dezairi³

et al. 2016

Int J Adv Tech

Self Cite

View full text Add to dashboard Cite

This paper presents the results of extensive numerical simulations, based on the control volume method, of 2D nanofluid fluid flow around a heated elliptical cylinder with different incidence angle and aspect ratio. The continuity and momentum equations have been numerically solved using a SIMPLE algorithm. Two types of nanofluids consisting of Al 2 O 3 and CuO nanoparticles dispersed separately in base fluids of water and ethylene glycol mixture 60:40 (by mass), were selected to evaluate their effect on the flow over elliptical cylinder, also their superiority over conventional fluids. The thermo-physical parameters of nanofluid have been estimated using the theory of one fluid phase, a contemporary correlations of thermal conductivity and viscosity of nanofluids have been used in this paper, which are functions of particle volumetric concentration as well as temperature. The results of heat transfer characteristics of nanofluid flow over elliptical cylinder reveled clear improvement comparing with the base fluids. This enhancement is more important in flows with different geometry characteristics of the elliptical cylinder. While the aspect ratio and the incidence angle, exert significant influence on the heat transfer characteristics. The obtained results indicate that the use of aspect ratio 0.83 and incidence angle 79.2° lead to the highest amounts of heat transfer inside the tube.

show abstract

Section: Introductionmentioning

confidence: 99%

Heat Transfer Characteristics of Nanofuid Flow around an Elliptical Cylinder

Zerradi¹,

Mizani²,

Dezairi³

et al. 2016

Int J Adv Tech

Self Cite

View full text Add to dashboard Cite

show abstract

“…Keywords: 24 Unsteady flow 25 Power-law nanofluid 26 Convective boundary 27 Stretching surface 28 Brownian motion 29 Thermophoresis 30 Similarity solution 31 3 2 a b s t r a c t 33 In this article, unsteady boundary layer flow of a power-law nanofluid over a stretching surface with a 34 convective boundary condition is investigated numerically. A power-law model that incorporates the 35 effects of Brownian motion and thermophoresis is used for non-Newtonian nanofluids.…”

mentioning

confidence: 99%

Unsteady convective heat and mass transfer in pseudoplastic nanofluid over a stretching wall

Khalili

Tamim

Khalili

et al. 2015

Advanced Powder Technology

View full text Add to dashboard Cite

“…The density is denoted by ρ and the volume fraction θ. This results from the authors' claims that the Nusselt number is a function of the nanoparticle alone [88] . It is posited that via Monte Carlo simulation and experiment the new correlation predicts the Nusselt number and thermal conductivity within about 4%.…”

Section: Fig II 15mentioning

confidence: 96%

“…Zerradi and his co-authors presented a paper purporting a new correlation for calculateing the Nusselt number of various nanofluids and subsequently the thermal conductivity [88] . Table 2 on the next page is a compilation of previously popular incarnations.…”

Section: Fig II 15mentioning

confidence: 99%

See 1 more Smart Citation

The production, properties and applications of the zinc imidazolate, ZIF-8.

Tatarko¹,

John²

View full text Add to dashboard Cite

Venna, Carreon, and Jasinski produced and characterized the first samples of the zinc imidazolate framework ZIF-8 at the University of Louisville in 2010. In this dissertation the production, properties, and applications of this unique metal-organic framework are explored.Previously, only minute laboratory amounts (1/4 gram), of ZIF-8 were produced via time-consuming and expensive processes. Production quantities have been synthesized via both a continuous and a batch process using a spray drying operation to effect separation of the solid product (ZIF-8) from the mother liquor. Approximately 85% of the mother liquor (methanol), can be recovered from the spray dryer resulting in magnitudeof-order savings in time and money.Before any engineering applications could be suggested it was necessary to quantify important physical properties of ZIF-8 not currently available. The density, thermal conductivity, specific heat, and BET surface area were measured via strict ASTM procedures and reported. It was hoped that the massive surface area of ZIF-8 (~ 1300 m 2 /g), would effect enhanced heat transfer in engineering applications.vi

show abstract

New Nusselt number correlations to predict the thermal conductivity of nanofluids

Cited by 41 publications

References 40 publications

Heat Transfer Characteristics of Nanofuid Flow around an Elliptical Cylinder

Heat Transfer Characteristics of Nanofuid Flow around an Elliptical Cylinder

Unsteady convective heat and mass transfer in pseudoplastic nanofluid over a stretching wall

The production, properties and applications of the zinc imidazolate, ZIF-8.

Contact Info

Product

Resources

About