Experimental and numerical investigation of nanofluid forced convection inside a wide microchannel heat sink

Kalteh, Mohammad; Abbassi, Abbas; Saffar‐Avval, Majid; Frijns, Ajh Arjan; Darhuber, Anton A.; Harting, Jens

doi:10.1016/j.applthermaleng.2011.10.023

Cited by 240 publications

(85 citation statements)

References 22 publications

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“…The pressure drop shows a similar enhancement in magnitude only. The average Nu increases with an increase in Re and nanofluid volume concentration as well as a decrease in nanoparticle size [45] and [46]. The enhancement of heat transfer is reported to be around 22 % using the 1 % Al 2 O 3 -water nanofluid compared to the water and has a higher friction factor than water does [47].…”

Section: Resultsmentioning

confidence: 83%

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LBM Analysis of Micro-Convection in MHD Nanofluid Flow

Sunil

Kumar

2017

Stroj. vest. - Jour. Mech. Eng.

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Section: Resultsmentioning

confidence: 83%

“…Thus, the Nu decreases by increasing x, regardless of the volume concentration. Most of the previous reports ignored the temperature jump [18], [34] and [35] except [36].…”

Section: Resultsmentioning

confidence: 99%

LBM Analysis of Micro-Convection in MHD Nanofluid Flow

Sunil

Kumar

2017

Stroj. vest. - Jour. Mech. Eng.

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“…Mohammad Kalteh et al [17] investigated the nanofluid forced convection experimentally and numerically inside a wide microchannel heat sink. They used two-phase Eulerian-Eulerian model in numerical method and reported that the average Nusselt number increases with increase in Reynolds number and nanoparticle volume concentration.…”

Section: Mirmasoumi and Behzadmehrmentioning

confidence: 99%

Numerical Study of Heat Transfer and Flow Bifurcation of CuO Nanofluid in Sudden Expansion Microchannel Using Two-Phase Model

Abbassi¹,

Nazari²,

Shahmardan³

2017

MME

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In this paper, laminar forced convection of CuO nanofluid is numerically investigated in sudden expansion microchannel with isotherm walls and different expansion ratios (ER). An Eulerian two-fluid model is considered to simulate the nanofluid flow inside the microchannel and the governing mass, momentum and energy equations for both phases are solved using the finite volume method. Eulerian-Eulerian two-phase model is very efficient because of considering the relative velocity and temperature of the phases and the nanoparticle concentration distribution. In solving the flow equations for both phases, the SIMPLE algorithm is modified for the coupling of the velocity and pressure and the continuity equations for both phases are combined in order to create the pressure correction equations. However, the Eulerian-Eulerian modeling results show higher heat transfer enhancement in comparison to pure water, so that for a 2% copper-water nanofluid, it has been observed a 35% increase of the heat transfer. The heat transfer enhancement increases with increase in Reynolds number and nanoparticle volume concentration, while the pressure drop increases only slightly. An investigation of the expansion ratio of microchannel shows that the average Nusselt number increases with decrease in expansion ratio as well as with increase in Reynolds number. Also, the Bifurcation has been occurred in higher Reynolds number that is different for each expansion ratio of the microchannel.

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“…Many researches have tackled this issue such as Akbari et al, 3 Balandin et al, 4 Kalteh et al, 12 and Hussien et al 10 In the work carried out by Labib et al, 13 the effect of base fluid on convective heat transfer utilizing Al 2 O 3 nanoparticles is numerically investigated. They concluded that ethylene glycol base fluid would give better heat transfer enhancement than that of water.…”

Section: Introductionmentioning

confidence: 99%

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid

Al‐Kouz

Al-Waked

Sari

et al. 2018

Advances in Mechanical Engineering

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The gaseous low-pressure nanofluid flow of a steady-state two-dimensional laminar forced convection heat transfer in the entrance region of pipes is numerically investigated. Such flows are of interest for many engineering applications like the nuclear reactor and electronic equipment cooling, heat exchangers, and many others. Physical parameters considered in this study are Reynolds number (Re), Prandtl number (Pr), nanosolid particles volume fraction (f), Knudsen number (Kn), and the aspect ratio (AR). These parameters ranges are as follows: 500 Re 2000, 0:76 Pr 0:95, 0 f 0:5, 0 Kn 0:1, and 1 AR 10. The outcome of this study shows that by increasing Kn, velocity slip and temperature jump at the solid boundaries increase. In addition, heat transfer is enhanced by dispersing Al 2 O 3 nanoparticles in the base low-pressure gaseous flow. Results show that there is no effect of the nanoparticles volume fraction with values below 0.03 on the average Nusselt number. The average Nusselt number increases (Nu) as the value of the nanoparticles volume fraction exceeds 0.03. For instance, at Re = 1000, results show that when dispersing Al 2 O 3 nanosolid particles with volume fractions of 0.3 and 0.5; there is an enhancement in the average Nusselt number of 30.35% and 136.74%, respectively, when compared to the case of dispersing Al 2 O 3 nanosolid particles of 0.03 volume fraction.. Moreover, it is concluded that the average Nusselt number (Nu) depends directly on Reynolds (Re), Prandtl (Pr) numbers, and the nanoparticles volume fraction (f) and inversely on Knudsen number (Kn) and the aspect ratio (AR) for the investigated range of parameters considered in this study. Finally, a correlation of Nusselt number among all the investigated parameters in this study is proposed as Nu = 0:976AR

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Experimental and numerical investigation of nanofluid forced convection inside a wide microchannel heat sink

Cited by 240 publications

References 22 publications

LBM Analysis of Micro-Convection in MHD Nanofluid Flow

LBM Analysis of Micro-Convection in MHD Nanofluid Flow

Numerical Study of Heat Transfer and Flow Bifurcation of CuO Nanofluid in Sudden Expansion Microchannel Using Two-Phase Model

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid

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Experimental and numerical investigation of nanofluid forced convection inside a wide microchannel heat sink

Cited by 240 publications

References 22 publications

LBM Analysis of Micro-Convection in MHD Nanofluid Flow

LBM Analysis of Micro-Convection in MHD Nanofluid Flow

Numerical Study of Heat Transfer and Flow Bifurcation of CuO Nanofluid in Sudden Expansion Microchannel Using Two-Phase Model

Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al2O3–air nanofluid

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Numerical study of heat transfer enhancement in the entrance region for low-pressure gaseous laminar pipe flows using Al₂O₃–air nanofluid