Stability and rheological properties of nanofluids containing ZnO nanoparticles, poly(propylene glycol) and poly(vinyl pyrrolidone)

Zafarani-Moattar, Mohammed Taghi; Shekaari, Hemayat; Munes-Rast, Rima; Majdan-Cegincara, Roghayeh

doi:10.1016/j.fluid.2015.06.013

Cited by 17 publications

(5 citation statements)

References 39 publications

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“…The term nanofluid refers to the stable distribution of low concentrations of nanoparticles (NPs) with sizes ranging from to 100 nm in a liquid [1,2]. Nanofluids have been widely used due to their greater thermal behaviors in comparison with the base fluid.…”

Section: Introductionmentioning

confidence: 99%

Viscosity, tribological and physicochemical features of ZnO and MoS2 diesel oil-based nanofluids: An experimental study

Mousavi

Heris

Estellé

2021

Fuel

117

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In this research, two different diesel oil-based nanofluids were prepared and the influence of temperature and nanoparticle content were examined on viscosity, tribological, and physicochemical features of diesel oil. The kinematic viscosity of samples was experimentally evaluated based on standard ASTM D445. The greatest viscosity increment was diagnosed at 0.7 wt.% and 100°C for both of the prepared nanofluids. The anti-friction behavior of the nanofluids was studied utilizing a pin-on-disc tribometer. The acquired outcomes revealed that ZnO and MoS 2 nanoparticles (NPs) could promote the tribological characteristics of pure diesel oil. By analyzing the friction coefficient values and line roughness of the wear surface (Ra), an optimal concentration of ZnO and MoS 2 nanoparticles (NPs) were found to be around 0.4 wt.% and 0.7 wt.%, respectively. The friction factor and pumping power were also measured at diverse content of nanoparticles and flow rates showing that the pumping power was enhanced by the incorporation of nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Viscosity, tribological and physicochemical features of ZnO and MoS2 diesel oil-based nanofluids: An experimental study

Mousavi

Heris

Estellé

2021

Fuel

117

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“…The viscosity of the nanofluid has been measured by applying a capillary viscometer. As has been identified by some researchers, there is no obvious shear thinning behavior in the dilute and semidilute nanofluids. Therefore, we used a dangling Ubbelohde-type viscometer (Julabo, MD-18V, Germany) to apperceive the viscosities for the nanofluid of ZnO up to a semidilute concentration range at T = 293.15, 298.15, 308.15, and 318.15 K. The temperature was controlled with a precision of ±0.01 K by a Peltier technique built-in thermostat.…”

Section: Experimentationmentioning

confidence: 84%

“…Zhang et al studied the stability of PEG nanofluids containing carbon-coated Cu (Al, Fe) nanoparticles with a core–shell structure by different dispersing ways such as magnetic stirring, ultrasonic dispersion, and ball milling. Zafarani-Moattar et al . used PEG to prepare stable nanofluids of ZnO, which was later characterized using dynamic light scattering (DLS).…”

Section: Introductionmentioning

confidence: 99%

Effect of Some Imidazolium-Based Ionic Liquids on the Stability, Volumetric, and Transport Properties of ZnO Nanofluids

2020

Self Cite

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The aim of this work was to study the influence of some imidazoliumbased ionic liquids (ILs) on the dispersion stability, volumetric properties, and viscosity of some polyethylene glycol 200 (PEG200) nanofluids containing ZnO nanoparticles. The particle size distribution of the systems has been studied by UV−Vis and dynamic light scattering (DLS). The results show that the ILs increase the stability of nanofluids. However, when the length of the alkyl chain of the ILs increased, the stability of nanofluids exhibited a decline. Additionally, to understand the molecular interactions between ILs, ZnO, and PEG200, the density (ρ), speed of sound (u), and viscosity (η) were measured at 293.15 to 308.15 K. The increase and decrease in some thermodynamic properties can help us discuss the stability behavior of nanofluids. Moreover, some theoretical analyses were performed using some well-known models and the respective calculated values were compared with those derived from experimental data.

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“…1 ZnO nanoparticle and propylene glycol were mixed to construct a nanofluid, and the technologies of ultraviolet−visible spectroscopy and light scattering were employed to study the nanoparticle size distribution and the stability of the suspension of the nanoparticle in the base fluid. 2 The effects of temperature and nanoparticle concentration on the viscosity of nanofluids were investigated, and the result showed that the viscosity decreased with temperature and increased with the nanoparticle concentration. 3 In the base fluid composed of 60 mass % propylene glycol and 40 mass % water, different nanoparticles made of Al 2 O 3 , ZnO, TiO 2 , and SiO 2 were injected, and the nanofluids exhibited lower surface tension, compared to the surface tension of the base fluid.…”

mentioning

confidence: 99%

“…The thermal performance of a nanofluid composed of carbon nanotubes and water was experimentally investigated, and it was found that the thermal conductivity of the nanofluid increased as the length of the nanotube decreased . ZnO nanoparticle and propylene glycol were mixed to construct a nanofluid, and the technologies of ultraviolet–visible spectroscopy and light scattering were employed to study the nanoparticle size distribution and the stability of the suspension of the nanoparticle in the base fluid . The effects of temperature and nanoparticle concentration on the viscosity of nanofluids were investigated, and the result showed that the viscosity decreased with temperature and increased with the nanoparticle concentration .…”

mentioning

confidence: 99%

Numerical Investigation of the Microscopic Heat Current Inside a Nanofluid System Based on Molecular Dynamics Simulation and Wavelet Analysis

Jia

Gao

2018

Anal. Chem.

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Molecular dynamics simulation is employed to investigate the microscopic heat current inside an argon-copper nanofluid. Wavelet analysis of the microscopic heat current inside the nanofluid system is conducted. The signal of the microscopic heat current is decomposed into two parts: one is the approximation part; the other is the detail part. The approximation part is associated with the low-frequency part of the signal, and the detail part is associated with the high-frequency part of the signal. Both the probability distributions of the high-frequency and the low-frequency parts of the signals demonstrate Gaussian-like characteristics. The curves fit to data of the probability distribution of the microscopic heat current are established, and the parameters including the mean value and the standard deviation in the mathematical formulas of the curves show dramatic changes for the cases before and after adding copper nanoparticles into the argon base fluid.

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Stability and rheological properties of nanofluids containing ZnO nanoparticles, poly(propylene glycol) and poly(vinyl pyrrolidone)

Cited by 17 publications

References 39 publications

Viscosity, tribological and physicochemical features of ZnO and MoS2 diesel oil-based nanofluids: An experimental study

Viscosity, tribological and physicochemical features of ZnO and MoS2 diesel oil-based nanofluids: An experimental study

Effect of Some Imidazolium-Based Ionic Liquids on the Stability, Volumetric, and Transport Properties of ZnO Nanofluids

Numerical Investigation of the Microscopic Heat Current Inside a Nanofluid System Based on Molecular Dynamics Simulation and Wavelet Analysis

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