Heat transfer improvement of water/single-wall carbon nanotubes (SWCNT) nanofluid in a novel design of a truncated double-layered microchannel heat sink

Arani, Ali Akbar Abbasian; Akbari, Omid Ali; Safaei, Mohammad Reza; Marzban, Ali; Al‐Rashed, Abdullah A.A.A.; Ahmadi, Gholamreza; Nguyen, Truong Khang

doi:10.1016/j.ijheatmasstransfer.2017.05.089

Cited by 220 publications

(52 citation statements)

References 43 publications

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“…To observe the flow characteristics of both MWCNT and SWCNT, we have employed the subsequent equations 39–43 as in Table 1. Also, the requisite thermophysical details of mixture components are tabulated in Table 2.…”

Section: Mathematical Formulationmentioning

confidence: 99%

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On the mixed convective carbon nanotube flow over a convectively heated curved surface

2020

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In this article, mixed convective boundary layer stream of nanofluid flow with carbon nanotube as nanoparticles and transmission of heat over a coiled stretched surface are studied. The influence of magnetic orientation and velocity slip is also encountered in this problem. Two classes of carbon nanotubes, SWCNT and MWCNT, are considered as nanoparticles and water as a pure liquid. The foremost leading partial differential equations (PDEs) are formulated through curvilinear coordinate system subjected to proper boundary conditions. To simplify this nonlinear PDE-associated model, we have employed a compatible similarity conversion and acquired the nonlinear dimensionless ordinary differential equations (ODEs). To determine the requisite numerical solution of the transformed problem, a shooting procedure embedded with RK-4 technique has been applied. Various pictorial attempts have been initiated against different parametric inputs to reveal the hydrothermal scenario. Some physical quantities like skin friction and Nusselt numbers are calculated to investigate flow distribution inside the preferred system. A comparison with earlier research depicts parallel outcomes. Results assured that velocity is a cumulative function with positive increment of curvature parameter, but an opposite scenario is shown for temperature for both type of nanofluids. The amount of heat transition has been declined against the improvement of the magnetic parameter.

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Section: Mathematical Formulationmentioning

confidence: 99%

“…Khan et al 39 irradiated upshot of CNT fluid stream on a smooth surface considering velocity slip. Arani et al 40 showed enhancement of heat transmission of SWCNT nanofluid than other type. Hayat et al 41 researched on radiated stream of CNT nanoliquid over a spinning disk.…”

Section: Introductionmentioning

confidence: 99%

On the mixed convective carbon nanotube flow over a convectively heated curved surface

2020

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“…Finite volume method [27,28] and the second-order upwind discretization method with maximum residual of 10 −6 [29,30] was used. For coupling velocity-pressure equations, the SIMPLEC [31,32] algorithm was used.…”

Section: Numerical Detailsmentioning

confidence: 99%

Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel

et al. 2019

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In the current study, laminar heat transfer and direct fluid jet injection of oil/MWCNT nanofluid were numerically investigated with a finite volume method. Both slip and no-slip boundary conditions on solid walls were used. The objective of this study was to increase the cooling performance of heated walls inside a rectangular microchannel. Reynolds numbers ranged from 10 to 50; slip coefficients were 0.0, 0.04, and 0.08; and nanoparticle volume fractions were 0-4%. The results showed that using techniques for improving heat transfer, such as fluid jet injection with low temperature and adding nanoparticles to the base fluid, allowed for good results to be obtained. By increasing jet injection, areas with eliminated boundary layers along the fluid direction spread in the domain. Dispersing solid nanoparticles in the base fluid with higher volume fractions resulted in better temperature distribution and Nusselt number. By increasing the nanoparticle volume fraction, the temperature of the heated surface penetrated to the flow centerline and the fluid temperature increased. Jet injection with higher velocity, due to its higher fluid momentum, resulted in higher Nusselt number and affected lateral areas. Fluid velocity was higher in jet areas, which diminished the effect of the boundary layer.

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“…Unlike the standard nanofluids with spherical oxide or metallic particles immersed in based fluid, fewer studies have been completed on the use of carbon nanotubes (CNT) based nanofluids in microchannel heat-sink. Recently, Arani et al [27] numerically investigated heat transfer rate of CNT nanofluids flowing through a truncated double-layered microchannel heat sink. From theoretical models for nanofluid properties, they showed the increase in heat transfer with nanoparticle content and the reduction in thermal resistance with the increase in Re or nanoparticle loading.…”

Section: Introductionmentioning

confidence: 99%

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

Mohd‐Ghazali

Estellé

Halelfadl

et al. 2019

J Therm Anal Calorim

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Heat transfer improvement of water/single-wall carbon nanotubes (SWCNT) nanofluid in a novel design of a truncated double-layered microchannel heat sink

Cited by 220 publications

References 43 publications

On the mixed convective carbon nanotube flow over a convectively heated curved surface

On the mixed convective carbon nanotube flow over a convectively heated curved surface

Heat Transfer of Oil/MWCNT Nanofluid Jet Injection Inside a Rectangular Microchannel

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

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