Periodic mixed convection of a nanofluid in a cavity with top lid sinusoidal motion

Karimipour, Arash; Nezhad, Alireza Hossein; Behzadmehr, A.; Alikhani, S.; Abedini, Ehsan

doi:10.1177/0954406211404634

Cited by 40 publications

(18 citation statements)

References 19 publications

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“…For water, they are equal to 247.8, 140, and 2.414 × 10 −5 , respectively [29]. However, based on the previous studies by Karimipour et al [30], the aforementioned correlation can be used with confidence for copper-water nanofluids.…”

Section: Governing Equations For Laminar Nanofluidsmentioning

confidence: 98%

Performance Evaluation of Nanofluids in an Inclined Ribbed Microchannel for Electronic Cooling Applications

Safaei¹,

Gooarzi²,

Akbari³

et al. 2016

Electronics Cooling

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Nanofluids are liφuid/solid susυensions with higher thermal conductivity, comυared to common working fluids. In recent years, the aυυlication of these fluids in electronic cooling systems seems υrosυective. In the υresent study, the laminar mixed convection heat transfer of different water-coυυer nanofluids through an inclined ribbed microchannel--as a common electronic cooling system in industry--was investigated numerically, using a finite volume method. The middle section of microchannel's right wall was ribbed, and at a higher temυerature comυared to entrance fluid. The modeling was carried out for Reynolds number of , Richardson numbers from . to , inclination angles ranging from ° to °, and nanoυarticles' volume fractions of . -. . The influences of nanoυarticle volume concentration, inclination angle, buoyancy and shear forces, and rib's shaυe on the hydraulics and thermal behavior of nanofluid flow were studied. The results were υortrayed in terms of υressure, temυerature, coefficient of friction, and Nusselt number υrofiles as well as streamlines and isotherm contours. The model validation was found to be in excellent accords with exυerimental and numerical results from other υrevious studies.The results indicated that at low Reynolds' flows, the gravity has effects on the heat transfer and fluid υhenomena considerably similarly, with inclination angle and nanoυarticle volume fraction, the heat transfer is enhanced by increasing the Richardson number, but resulting in a less value of friction coefficient. The results also reυresented that for sυecific Reynolds Re and Richardson Ri numbers, heat transfer and υressure droυ augmented by increasing the inclination angle or volume fraction of nanoυarticles. With regard to the coefficient of friction, its value decreased by adding less nanoυarticles to the fluid or by increasing the inclination angle of the microchannel.

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Section: Governing Equations For Laminar Nanofluidsmentioning

confidence: 98%

Performance Evaluation of Nanofluids in an Inclined Ribbed Microchannel for Electronic Cooling Applications

Safaei¹,

Gooarzi²,

Akbari³

et al. 2016

Electronics Cooling

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“…Also in micro and nanoscales, the particle-based models should be used such as the Lattice Boltzmann Method or molecular dynamics [19][20][21][22][23]. Raisi et al [24] numerically [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Developing the laminar MHD forced convection flow of water/FMWNT carbon nanotubes in a microchannel imposed the uniform heat flux

Karimipour

Taghipour

Malvandi

2016

Journal of Magnetism and Magnetic Materials

100

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“…Their results show that the ratio of heat transfer coefficient of nanofluids to that of base fluid decreased as the average temperature of nanofluids was lowered. Karimipour et al [27] numerically investigated the mixed convection of a water-copper nanofluid inside a rectangular cavity. They observed that when Reynolds number is less than one, heat transfer rate is much greater than when Reynolds number is more than one.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Natural Convection in Vertical Enclosures Utilizing Nanofluid

Alipanah

Ranjbar

Zahmatkesh

2014

Advances in Mechanical Engineering

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Enhancement of buoyancy-driven convection heat transfer within vertical cavities containing nanofluids subjected to different side wall temperatures and various aspect ratios is investigated. The computations are based on an iterative, finitevolume numerical procedure (SIMPLE) that incorporates the Boussinesq approximation to simulate the buoyancy term. With the base fluid being water, three different nanoparticles (Cu, TiO 2 , and Al 2 O 3) are considered as the nanofluids. This study has been carried out for the pertinent parameters in the following ranges: the Rayleigh number, Ra f = 10 5-10 7 and the volumetric fraction of nanoparticle between 0 and 5 percent. The results are presented for different length-to-height ratios varying from 0.1 to 1.0. The comparisons show that the mean Nusselt numbers and velocity magnitudes increase with volume fraction for the whole range of the Rayleigh numbers. The predictions show a noticeable heat transfer enhancement compared to pure fluid. It is also found that the heat transfer enhancement utilizing nanofluid is more pronounced at low aspect ratios than high aspect ratios. Moreover, the results depict that the addition of nanoparticles to the pure fluid has more effects at lower Rayleigh numbers.

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Periodic mixed convection of a nanofluid in a cavity with top lid sinusoidal motion

Cited by 40 publications

References 19 publications

Performance Evaluation of Nanofluids in an Inclined Ribbed Microchannel for Electronic Cooling Applications

Performance Evaluation of Nanofluids in an Inclined Ribbed Microchannel for Electronic Cooling Applications

Developing the laminar MHD forced convection flow of water/FMWNT carbon nanotubes in a microchannel imposed the uniform heat flux

Numerical Study of Natural Convection in Vertical Enclosures Utilizing Nanofluid

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