Buoyancy induced convective heat transfer in particle, tubular and flake type of nanoparticle suspensions

Joshi, Pranit Satish; Pattamatta, Arvind

doi:10.1016/j.ijthermalsci.2017.07.030

Cited by 21 publications

(9 citation statements)

References 22 publications

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“…Ho et al [21] studied the free convection heat transfer in a square cavity containing Al2O3/distilled water (DW) (0.1-4 vol%) nanofluid and they demonstrated that the highest heat transfer enhancement occurred for φ = 0.1 vol%. The work of Joshi and Pattamatta [8] was also found to be consistent with those stated above. Relative to DW, they noticed that the maximum improvement in heat transfer was noticed for φ = 0.1 vol% when the thermo-convection performance of Al2O3, MWCNT, and graphene/DW (0.1-0.5 vol%) nanofluids filled into a square enclosure was investigated.…”

Section: Introductionsupporting

confidence: 84%

“…In the past two decades, nanofluids have been widely researched and established to possess improved thermal properties when compared with traditional fluids of liquids [2], [3] and air [4], [5]. By extension, the thermo-and thermomagnetic convection of different types of nanofluids in various shapes of cavities have been investigated and still on-going [6], [7], [8], [9], [10], [11], [12], [13]. Published articles in the public domain evidently showed that extensive researches had been conducted in this field of study with great emphasis on the numerical approach relative to the experimental method [14].…”

Section: Introductionmentioning

confidence: 99%

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Effects of uniform magnetic induction on heat transfer performance of aqueous hybrid ferrofluid in a rectangular cavity

Giwa

Sharifpur

Meyer

2020

Applied Thermal Engineering

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Section: Introductionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Effects of uniform magnetic induction on heat transfer performance of aqueous hybrid ferrofluid in a rectangular cavity

Giwa

Sharifpur

Meyer

2020

Applied Thermal Engineering

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“…A correlation was developed from the experimental data for Nu estimation (see Table 5 ). On investigating the natural convection heat transfer behaviors of graphene, MWCNT and Al 2 O 3 /DW (0.1–0.5 vol.%) NF in a square cavity, Joshi and Pattamatta [ 142 ] also reported heat transfer augmentation of the NF relative to DW, which agreed with the works of Garbadden et al [ 16 ] and Ho et al [ 145 ].…”

Section: Convective Heat Transfer Performance Of Nanofluidssupporting

confidence: 78%

Experimental Research and Development on the Natural Convection of Suspensions of Nanoparticles—A Comprehensive Review

et al. 2020

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Suspensions of nanoparticles, widely known as nanofluids, are considered as advanced heat transfer media for thermal management and conversion systems. Research on their convective thermal transport is of paramount importance for their applications in such systems such as heat exchangers and solar collectors. This paper presents experimental research on the natural convection heat transfer performances of nanofluids in different geometries from thermal management and conversion perspectives. Experimental results and available experiment-derived correlations for the natural thermal convection of nanofluids are critically analyzed. Other features such as nanofluid preparation, stability evaluation and thermophysical properties of nanofluids that are important for this thermal transfer feature are also briefly reviewed and discussed. Additionally, techniques (active and passive) employed for enhancing the thermo-convection of nanofluids in different geometries are highlighted and discussed. Hybrid nanofluids are featured in this work as the newest class of nanofluids, with particular focuses on the thermophysical properties and natural convection heat transfer performance in enclosures. It is demonstrated that there has been a lack of accurate stability evaluation given the inconsistencies of available results on these properties and features of nanofluids. Although nanofluids exhibit enhanced thermophysical properties such as viscosity and thermal conductivity, convective heat transfer coefficients were observed to deteriorate in some cases when nanofluids were used, especially for nanoparticle concentrations of more than 0.1 vol.%. However, there are inconsistencies in the literature results, and the underlying mechanisms are also not yet well-understood despite their great importance for practical applications.

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“…4 to 6. These parameters were introduced in the study achieved by Pak and Cho [ 33 ] and listed in Table4.…”

Section: Measuring the Thermo-physical Properties Of The Nanofluidmentioning

confidence: 99%

“…Wen and Ding [32] showed a reduced mean size of accumulation by applying a highshear homogenizer. Joshi and Pattamatta [33] found that the lower value of Nusselt number when used (MWCNT/water), while get the higher value in (graphene/water) if compared with (alumina /Water). Khalili et al [34] showed that the average size of the nanoparticles at the cold side wall was 3.10% higher than that along the hot wall.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Mixed Convection on a Rotating Circular Cylinder in a Cavity Filled With Nanofluid and Porous Media

Abdulsahib

Al‐Farhany

2020

QJES

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The present study, experimentally investigated the mixed convection in a square enclosure partitioned in two layers. The experiments were performed with Al2O3–water nanofluid (upper layer) and superposed porous medium (lower layer) with an adiabatic rotating cylinder at the center of the cavity. The boundary conditions of the experimental study were; the upper and lower walls were assumed adiabatic, the right wall was heated, and the left wall was cooled. Experimentally, 15 K-type thermocouples and thermal imaging camera were employed to measure the temperatures distribution inside the cavity when the concentration of nanoparticles (ɸ = 0.06), the temperature difference (∆T) between the cold and hot walls was (6, 8, and 10) °C, and angular rotational velocity (-50, -25, 0, 25, and 50) rpm. The results of experimental data showed that in general, the distribution of temperatures was very well along the upper half of the enclosure, while in the lower half the temperature distribution was confined near the hot wall region. When the circular cylinder rotates in counter-clockwise, it noted that the effect of speed is evident in the downside of the cylinder, while the temperature distribution in the left upper part of the enclosure decreasing. When the circular cylinder rotates in the clockwise direction, the results showed that the effect of cylinder rotation was around cylinder only. Moreover, the results demonstrated that the increasing temperature difference leads to a noticeable increment in the intensity of the flow.

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Buoyancy induced convective heat transfer in particle, tubular and flake type of nanoparticle suspensions

Cited by 21 publications

References 22 publications

Effects of uniform magnetic induction on heat transfer performance of aqueous hybrid ferrofluid in a rectangular cavity

Effects of uniform magnetic induction on heat transfer performance of aqueous hybrid ferrofluid in a rectangular cavity

Experimental Research and Development on the Natural Convection of Suspensions of Nanoparticles—A Comprehensive Review

Experimental Investigation of Mixed Convection on a Rotating Circular Cylinder in a Cavity Filled With Nanofluid and Porous Media

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