Numerical study of heat transfer enhancement with the use of nanofluids in radial flow cooling system

Yang, Yue-Tzu; Lai, Feng-Hsiang

doi:10.1016/j.ijheatmasstransfer.2010.07.045

Cited by 50 publications

(18 citation statements)

References 42 publications

(92 reference statements)

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“…The investigation on nanofluid behaviour is becoming more and more popular, as testified by recent reviews and papers on this issue [35][36][37][38][39][40][41][42][43][44] but inconsistencies in published data and disagreements on the heat transfer mechanisms have been underlined by Keblinski et al [45] and recently by Gherasim et al [46]. However, a few examples of studies on nanofluids in impinging jets have been investigated experimentally and numerically and, according to the best knowledge of the present authors, their investigations have been reported in [46][47][48][49][50][51][52][53][54][55][56][57][58][59]. Roy et al [50] provided the first numerical results on the hydrodynamic and thermal fields of Al 2 O 3 /water nanofluid in a radial laminar flow cooling system, underlining a heat transfer enhancement up to 200% in the case of a nanofluid with 10% in nanoparticle volume concentration at a Reynolds number equal to 1200.…”

Section: Advances In Mechanical Engineeringmentioning

confidence: 78%

“…Gherasim et al [46] highlighted the limitations in the use of Al 2 O 3 /water nanofluid in a radial flow configuration due to the significant increase in the associated pumping power. Also, Yang and Lai presented numerical results on confined jets with constant [55] and temperature-dependent [56] properties. Results confirmed the Nusselt number increases with the increase of Reynolds number and nanoparticle volume fraction and the increase in pressure drop.…”

Section: Advances In Mechanical Engineeringmentioning

confidence: 99%

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Numerical Study of Laminar Confined Impinging Slot Jets with Nanofluids

Lorenzo¹,

Manca²,

Nardini³

et al. 2012

Advances in Mechanical Engineering

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A solution to obtain efficient cooling systems is represented by the use of confined or unconfined impinging jets. Moreover, the possibility of improving the thermal performances of the working fluids can be taken into account and the introduction of nanoparticles in a base fluid can be considered. In this paper, a numerical investigation on confined impinging slot jet working with a mixture of water and Al 2 O 3 nanoparticles is described. The flow is laminar and a uniform temperature is applied on the target surface. The single-phase model approach has been adopted. Different geometric ratios, particle volume concentrations, and Reynolds numbers have been considered in order to study the behaviour of the system in terms of average and local Nusselt number, convective heat transfer coefficient and required pumping power profiles, temperature fields, and stream function contours.

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Section: Advances In Mechanical Engineeringmentioning

confidence: 78%

Section: Advances In Mechanical Engineeringmentioning

confidence: 99%

Numerical Study of Laminar Confined Impinging Slot Jets with Nanofluids

Lorenzo¹,

Manca²,

Nardini³

et al. 2012

Advances in Mechanical Engineering

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“…Figure 5: Influence of Reynolds number and particle volume fraction on Nusselt number (reprinted from Yang and Lai (2010), with permission from Elsevier). Vol.…”

Section: Numerical Studiesmentioning

confidence: 99%

Investigation of heat transfer processes involved liquid impingement jets: a review

Molana

Banooni

2013

Braz. J. Chem. Eng.

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“…The following equations are used to compute thermo-physical properties of nanofluid (density, specific heat, viscosity and thermal conductivity) [11]. (9) (10) where the subscripts bf, nf and p denote the base fluid, nanofluid and nanoparticle volume fraction, respectively.…”

Section: Boundary Conditionsmentioning

confidence: 99%

Numerical Study of Heat Transfer Due to Twinjets Impingement onto an Isothermal Moving Plate

Başaran

Selimefendigil

2013

MCA

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Abstract-In this study, heat transfer from a moving isothermal hot plate due to double impinging vertical slot jets was investigated for a laminar flow. The rectangular geometry consists of a confining adiabatic wall placed parallel to the moving impingement. The jets are located symmetrically at mid point of upper wall. Water and Al 2 O 3 nanoparticles mixture with different volumetric fraction was used as working medium. In considered jet impingement problem, the effects of the jet exit Reynolds numbers, ranging from 50 to 200, the normalized plate velocity, ranging from 0 to 2, and volumetric fractions of nanofluid, ranging from 0% to 6% were investigated. The commercial software package based on finite volume method FLUENT (version 6.3.26) is used in this study for the computations. It has been observed that increasing normalized plate velocity increases the heat transfer from bottom surface. Similarly, increasing Reynolds number of slot jets leads to enhancement of heat transfer. Besides, increasing volumetric fraction of nanofluid conributes to heat transfer enhancement.

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Numerical study of heat transfer enhancement with the use of nanofluids in radial flow cooling system

Cited by 50 publications

References 42 publications

Numerical Study of Laminar Confined Impinging Slot Jets with Nanofluids

Numerical Study of Laminar Confined Impinging Slot Jets with Nanofluids

Investigation of heat transfer processes involved liquid impingement jets: a review

Numerical Study of Heat Transfer Due to Twinjets Impingement onto an Isothermal Moving Plate

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