Rheological behavior of water and ethylene glycol based nanofluids containing oxide nanoparticles

Минаков, А. В.; Rudyak, V. Ya.; Pryazhnikov, M. I.

doi:10.1016/j.colsurfa.2018.06.051

Cited by 55 publications

(26 citation statements)

References 22 publications

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“…Envisaging applications of the nanofluids as cooling fluids or in medicine, it is desirable to employ fluids with low viscosity. It is also know that the viscosity of nanofluids is an increasing function of the nanoparticle concentration [24] and becoming non-Newtonian at high concentrations in some cases [25]. Many of the previous mentioned techniques actually employ highly concentrated colloids due to limitations of the technique.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Thermal Diffusivity of Plasmonic Nanofluids Containing PVP-Coated Ag Nanoparticles Using Mode-Mismatched Dual-Beam Thermal Lens Technique

Lopes

Lenart

Turchiello

et al. 2018

Advances in Condensed Matter Physics

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Plasmonic nanofluids have found applications in many fields, for example, coolants, solar collectors, and theranostics agents. For such applications, an important parameter is the thermal diffusivity. In this communication, we present an experimental study concerning the dependence of the thermal diffusivity of highly diluted aqueous plasmonic nanofluids containing PVP-coated silver nanoparticles on the concentration. Measurements were made by employing the time resolved mode-mismatched thermal lens technique and the results show an enhancement of the thermal diffusivity, when compared to that of the carrier fluid, on increasing the number density of the nanoparticles and being rather constant as a function of the power of the pump beam.

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Section: Introductionmentioning

confidence: 99%

Determination of the Thermal Diffusivity of Plasmonic Nanofluids Containing PVP-Coated Ag Nanoparticles Using Mode-Mismatched Dual-Beam Thermal Lens Technique

Lopes

Lenart

Turchiello

et al. 2018

Advances in Condensed Matter Physics

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“…Recently, nanofluids containing nanodiamonds appear as an interesting material for advanced heat applications. However, those materials exhibit non-Newtonian behavior, as presented by Minakov et al [ 151 , 152 ]. They examined the viscosity of water-based nanofluids containing nanodiamonds (ND) with an average size of 5 nm.…”

Section: Properties Of Carbon-based Nanofluidsmentioning

confidence: 99%

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

et al. 2020

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Recently, many scientists have been making remarkable efforts to enhance the efficiency of direct solar thermal absorption collectors that depends on working fluids. There are a number of heat transfer fluids being investigated and developed. Among these fluids, carbon nanomaterial-based nanofluids have become the candidates with the most potential by the heat absorbing and transfer properties of the carbon nanomaterials. This paper provides an overview of the current achievements in preparing and exploiting carbon nanomaterial-based nanofluids to direct thermal solar absorption. In addition, a brief discussion of challenges and recommendations for future work is presented.

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“…Issues related to the practical application of selected rheological models have been the subject of many papers for a long time [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. This is mainly due to the large variety of non-Newtonian fluids (emulsions [5][6][7][8], suspensions [8,9], solutions [10], polymer mixtures [11] etc. ), their various properties [11][12][13][14] which often change with parameters of technological process, e.g.…”

Section: Introductionmentioning

confidence: 99%

Identification of Rheological Properties of Poly(ethylene Oxide) – Water Solutions

Wójtowicz

Kocewiak

Lipin

2020

IVKKT

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In the paper results of investigations of rheological properties for selected PEO-water solutions are presented. On the basis of measurements, carried out with use of rotational viscosimeter values of shear stresses were determined in the relatively wide range of shear rates. Rheological curves were described by the Ostwald de Waele model (or so-called power-law). The model coefficients such as the fluid consistency coefficient k and the flow behavior index n were determined using Levenberg−Marquardt algorithm for nonlinear estimation. The influence of temperature on properties and behavior examined non-Newtonian fluids was also determined. Results were processed in the curve shift parameter at. Experiments shown a significant effect of poly(ethylene oxide) concentration cPEO on rheological properties of examined solutions. For the lowest concentration (cPEO=1.2%) solutions exhibited properties similar to Newtonian fluids with values of n close to 1. With increasing of PEO concentration in water (cPEO=2.4-4.8%), solutions exhibited properties as non - Newtonian fluids, pseudoplastic, without yield limit. In these cases values of n were below unity and for the highest concentration (cPEO=4.8%) belonged to the range of n=0.5694-0.7536, depending on the temperature. Results of investigations can be used during numerical simulations, design and optimization of industrial equipment, working with fluids of this kind, including mixing vessels, columns or heat exchangers.

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Rheological behavior of water and ethylene glycol based nanofluids containing oxide nanoparticles

Cited by 55 publications

References 22 publications

Determination of the Thermal Diffusivity of Plasmonic Nanofluids Containing PVP-Coated Ag Nanoparticles Using Mode-Mismatched Dual-Beam Thermal Lens Technique

Determination of the Thermal Diffusivity of Plasmonic Nanofluids Containing PVP-Coated Ag Nanoparticles Using Mode-Mismatched Dual-Beam Thermal Lens Technique

Carbon Nanomaterial-Based Nanofluids for Direct Thermal Solar Absorption

Identification of Rheological Properties of Poly(ethylene Oxide) – Water Solutions

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