Thermal and hydrodynamic performance of a microchannel heat sink with carbon nanotube nanofluids

Mohd‐Ghazali, Normah; Estellé, Patrice; Halelfadl, Salma; Maré, Thierry; Siong, Tng Choon; Abidin, Ummikalsom

doi:10.1007/s10973-019-08260-2

Cited by 26 publications

(15 citation statements)

References 39 publications

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“…The forced convection heat transfer in microchannels with liquid has higher efficiency and is easier for utilization than other methods. Some scholars used various kinds of nanofluids as the heat transfer fluid in microchannels [7][8][9][10]. Thermal and hydrodynamic performance of an MCHS with carbon nanotube nanofluids was investigated by Normah et al [10].…”

Section: Introductionmentioning

confidence: 99%

“…Some scholars used various kinds of nanofluids as the heat transfer fluid in microchannels [7][8][9][10]. Thermal and hydrodynamic performance of an MCHS with carbon nanotube nanofluids was investigated by Normah et al [10]. The results showed that the nanotube nanofluid with lignin as the surfactant performed better thermally and hydrodynamically, due to lower viscosity at high carbon nanotube concentration compared to the nanotube nanofluid with sodium polycarboxylate surfactant.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of laminar flow and heat transfer in an interrupted microchannel heat sink with different shaped ribs

Wang

Zhang

et al. 2019

J Therm Anal Calorim

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A numerical study was conducted to investigate the mechanism of laminar flow and heat transfer enhancement in an interrupted microchannel heat sink (IMCHS) with different shaped ribs at Reynolds number ranging from 100 to 900. The global flow features, heat transfer and friction for IMCHS with no ribs, rectangle ribs, triangle ribs and trapezoid ribs are detailed compared. The results show that the local heat transfer and friction performance of IMCHS with ribs show significant increase at the windward side of the ribs. Additionally, the smaller the chamfer of ribs, the larger average heat transfer and friction performance. For IMCHS with rectangle ribs, the maximum increment of Nu and f can reach to 1.81 and 2.59, respectively. Concerning the overall heat transfer performance (PEC), the trapezoid ribs show the best behavior with PEC = 1.65-1.38 at Re = 100-900. Keywords Interrupted microchannel heat sink • Different rib shapes • Numerical simulation • Overall heat transfer performance List of symbols Cp Specific heat (J kg −1 K −1) De Hydraulic diameter (mm) f Darcy friction factor h Heat transfer coefficient (W m −2 K −1) L Length (m) Nu Nusselt number P Pressure (Pa) PEC Overall heat transfer performance Pr Prandtl number q Average heat flux (W m −2) Re Reynolds number T Temperature (K) u Velocity (m s −1) x, y, z Three coordinates shown in Fig. 1 ΔP Pressure drop (Pa) Greek letters λ Thermal conductivity (W m −1 K −1) μ Dynamic viscosity (kg m −1 s −1) ρ Density (kg m −3) Subscripts ave Average value f Fluid i, j, k Directions of the coordinate system in Inlet local Local value out Outlet w Wall 0 Reference value * Bingxi Li

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of laminar flow and heat transfer in an interrupted microchannel heat sink with different shaped ribs

Wang

Zhang

et al. 2019

J Therm Anal Calorim

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“…N3 is used for nanofluids obtained with sodium polycarboxylate as a surfactant. To make easier the implementation of thermophysical data of nanofluids in the numerical simulation and program [44], the following formulas of thermophysical properties of nanofluids have been adjusted on experimental data. The thermal expansion coefficient of nanofluids was calculated from the following equation [2] as:…”

Section: Thermophysical Properties Of Multi-walled Carbon Nanotube Nanofluidmentioning

confidence: 99%

Numerical simulation of three-dimensional thermo-solutal convection of micropolar multi-walled carbon nanotubes water nanofluid stabilized by lignin and sodium polycarboxylate

Manaa

Abidi

Estellé

et al. 2021

J Therm Anal Calorim

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A computational analysis has been performed in this study to solve three-dimensional thermo-solutal natural convection in a differentially heated cubical enclosure filled with micropolar CNT-water nanofluid stabilized by two types of surfactants lignin and sodium polycarboxylate. The work is carried out for different pertinent parameters as Rayleigh number (10 4 Ra 10 6 ), micropolar parameter (0 K 10), buoyancy ratio (-1 N 0) and nanoparticles's volume fraction (0.0055% 0.557%).It is observed that the heat and mass transfer rates are lower for a micropolar nanofluid model when compared to the pure nanofluid model. In fact, the enhancement of micropolar parameter results a decrease of average Nusselt and Sherwood numbers. The use of lignin as a surfactant ameliorates heat and mass transfer rate and nanofluid flow better than the use of sodium polycarboxylate as a surfactant. The nanoparticles volume fraction can be used as a control element for heat rate and fluid flow. Thus, for a nanoparticles volume concentration less than the critical value, the flow intensity is ameliorated and is deteriorated when it exceed this value.

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“…Murshed [17] mention in the review paper that CNTs nanofluids have six-time higher thermal conductivity compared to other materials at ambient temperature. The CNTs nanofluids sufficiently investigated in the literature (see for example Xie et al [18], Sarafraz et al [19], Selimefendigil, and Öztop [20], Ghazali et al [21] and Abdeen et al [22]) but without memory and heredity effect. This is since, in mathematical studies, the traditional models with integer-order PDEs are utilized.…”

Section: Introductionmentioning

confidence: 99%

Application of Fractional Derivative Without Singular and Local Kernel to Enhanced Heat Transfer in CNTs Nanofluid Over an Inclined Plate

Saqib¹,

Kasim²,

Mohammad³

et al. 2020

Preprint

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Nanofluids are a novel class of heat transfer fluid that plays a vital role in industries. In mathematical investigations, these fluids are modeled in terms of traditional integer-order partial differential equations (PDEs). It is recognized that traditional PDEs cannot decode the complex behavior of physical flow parameters and memory effects. Therefore, this article intends to study the mixed convection heat transfer in nanofluid over an inclined vertical plate via fractional derivatives approach. The problem in hand is modeled in connection with Atangana-Baleanu fractional derivatives without singular and local kernel having strong memory. The human blood is considered as base fluid dispersing carbon nanotube (CNTs) (single-wall carbon nanotubes (SWCNTs) and multi-wall carbon nanotubes(MWCNTs )) into it to form blood-CNTs nanofluid. The nanofluids are considered to flow in a saturated porous medium under the influence of an applied magnetic field. The exact analytical expressions for velocity and temperature profiles are acquired using the Laplace transform technique and plotted in various graphs. The empirical results indicate that the memory effect decreases with increasing fractional parameters in the case of both temperature and velocity profiles. Moreover, the temperature profile is higher for blood-SWCNTs by reason of higher thermal conductivity whereas, this trend is opposite in case of velocity profile due densities difference.

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Thermal and hydrodynamic performance of a microchannel heat sink with carbon nanotube nanofluids

Cited by 26 publications

References 39 publications

Analysis of laminar flow and heat transfer in an interrupted microchannel heat sink with different shaped ribs

Analysis of laminar flow and heat transfer in an interrupted microchannel heat sink with different shaped ribs

Numerical simulation of three-dimensional thermo-solutal convection of micropolar multi-walled carbon nanotubes water nanofluid stabilized by lignin and sodium polycarboxylate

Application of Fractional Derivative Without Singular and Local Kernel to Enhanced Heat Transfer in CNTs Nanofluid Over an Inclined Plate

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