Enhancement of natural convection heat transfer in a square cavity using MWCNT/Water nanofluid: an experimental study

Joshi, Pranit Satish; Pattamatta, Arvind

doi:10.1007/s00231-017-2098-0

Cited by 13 publications

(7 citation statements)

References 17 publications

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“…of enclosures and subjected to various thermal and boundary conditions using both numerical and experimental techniques [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12]. However, limited studies on the experimentbased free convection of nanofluids in enclosures of various configurations have been investigated relative to the numerical works published [3,9,[13], [14], [15], [16], [17], [18], [19], [20]].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of thermo-convection performance of hybrid nanofluids of Al2O3-MWCNT/water in a differentially heated square cavity

Giwa

Sharifpur

Meyer

2020

International Journal of Heat and Mass Transfer

111

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Section: Introductionmentioning

confidence: 99%

“…Using MWCNT/water and Al2O3/water nanofluids, Joshi and Pattamatta [18] experimentally investigated the natural convection heat transfer of these nanofluids in a square cavity. The work was conducted at Ra range of 7 × 10 5 -1 × 10 7 and volume concentration ranges of 0.1-2% (Al2O3/water nanofluids) and 0.1-0.5% (MWCNT/water nanofluids).…”

Section: Introductionmentioning

confidence: 99%

Experimental study of thermo-convection performance of hybrid nanofluids of Al2O3-MWCNT/water in a differentially heated square cavity

Giwa

Sharifpur

Meyer

2020

International Journal of Heat and Mass Transfer

111

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“…According to the experimental data of Joshi and Pattamatta, 35 the effective dynamic viscosity of the nanofluid at different volume fractions is as follows:

\frac{μ_{normaln normalf}}{μ_{f}} = 1 + 87.5 \times ϕ + 12500 \times ϕ^{2} .

…”

Section: Lbm Basismentioning

confidence: 99%

“…The relative experimental thermal conductivity 35 of the nanofluid at different volume fractions is as follows:…”

mentioning

confidence: 99%

MHD conjugate heat transfer and entropy generation analysis of MWCNT/water nanofluid in a partially heated divided medium

et al. 2020

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The aim of this article is to conduct the lattice Boltzmann simulation of the magnetohydrodynamic (MHD) natural conjugate heat transfer in an apportioned cavity loaded with a multiwalled carbon nanotube/water nanofluid. The divided cavity is, to some extent, heated and cooled at the upright walls, whereas the horizontal walls are adiabatic. The nanofluid properties are evaluated on the basis of experimental correlations. The parameters ranges in the study are as follows: nanoparticles' volume fraction (%): 0 ≤ ϕ ≤ 0.5, temperature (°C): T = 27, Rayleigh number (Ra): 10 3 ≤ Ra ≤ 10 5 , Hartmann number (Ha): 0 ≤ Ha ≤ 90, and the magnetic field inclination angle (γ): 0 ≤ γ ≤ π/2. The current outcomes are observed to be in great concurrence with the numerical results introduced in the literature. The impacts of the aforesaid parameters on local and average heat transfer, entropy generation, and Bejan number (Be) are explored and discussed. Indeed, the transfer of heat increases linearly with ϕ for a low Ra. As Ra increases, the average Nusselt number decreases for a high value of ϕ. The increase of nanoparticles' volume fraction leads to a reduction in the entropy generation and an increase in the Bejan number for a high Ra, but at low Ra, these functions remain

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“…Studies on natural/free convective flow in a water–carbon nanotube filled cavity (square‐shaped) with a heated lower wall were conducted and noted that the augmentation in magnetic field causes a reduction in the convection mode of heat transfer 7,8 . Joshi and Pattamatta 9 experimentally investigated the heat transfer of MWCNT–water nanofluid, in comparison with the Al 2 O 3 –water nanofluid, which occurs due to free convection. The results denote that the enhancement of heat transfer performance by MWCNT–water nanofluid is more than the Al 2 O 3 –water nanofluid.…”

Section: Introductionmentioning

confidence: 99%

Fluid friction/heat transfer irreversibility and heat function study on MHD free convection within the MWCNT–water nanofluid‐filled porous cavity

2022

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The study comprises the effect of natural/free convection on an MWCNT–water nanofluid‐filled cavity. The porous cavity is heated/cooled to the left/right walls and the horizontal wall is maintained adiabatically. The flow behavior and entropy analysis are evaluated numerically using the finite difference approximation techniques. This study is bounded with various dimensional parameters such as ϕ $\phi $—nanoparticle concentration, Ha—Hartmann number, Ra—Rayleigh number, and Da—Darcy number. The results of the study are illustrated using ψ $\psi $—streamlines or stream function, θ $\theta $—isotherms, Π $\Pi $—heatlines or heat function, S ψ ${S}_{\psi }$—fluid friction irreversibility, S θ ${S}_{\theta }$—heat transfer irreversibility, Θ cup ${{\rm{\Theta }}}_{\mathrm{cup}}$—cup‐mixing temperature, and Θ RMSD ${{\rm{\Theta }}}_{\mathrm{RMSD}}$—root‐mean‐square deviation. Also, italicNu ${Nu}$—average Nusselt number and italicBe ${Be}$—average Bejan number are used to represent the transfer rate of heat and irreversibility of fluid friction/heat transfer, respectively. The domination of conduction on lower Ra and Da are noticed and, domination of convection on higher Ra and Da are observed using a heatline map. The fluid friction and heat transfer irreversibilities are highly noted near the vertical boundaries for increasing Rayleigh number and Darcy number.

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Enhancement of natural convection heat transfer in a square cavity using MWCNT/Water nanofluid: an experimental study

Cited by 13 publications

References 17 publications

Experimental study of thermo-convection performance of hybrid nanofluids of Al2O3-MWCNT/water in a differentially heated square cavity

Experimental study of thermo-convection performance of hybrid nanofluids of Al2O3-MWCNT/water in a differentially heated square cavity

MHD conjugate heat transfer and entropy generation analysis of MWCNT/water nanofluid in a partially heated divided medium

Fluid friction/heat transfer irreversibility and heat function study on MHD free convection within the MWCNT–water nanofluid‐filled porous cavity

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