Predicting the effective viscosity of nanofluids based on the rheology of suspensions of solid particles

Udawattha, Dilan S.; Narayana, Mahinsasa; Wijayarathne, U. P. L.

doi:10.1016/j.jksus.2017.09.016

Cited by 69 publications

(24 citation statements)

References 67 publications

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“…Some researchers, with the aid of experiments, have proposed numerical formulas for viscosity using correlation. Udawattha et al [111] proposed a viscosity formula considering five effective variables. These variables include particle size, temperature, volume concentration, nanoparticle material, and particle shape.…”

Section: Nanofluid Viscositymentioning

confidence: 99%

Nanofluids in Solar Thermal Collectors: Review and Limitations

et al. 2020

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Solar thermal collectors are systems that allow for the use of solar energy in thermal applications. These collectors utilize a heat transfer fluid to transport absorbed solar radiation to applications where they are needed. Scientists in a bid to improve the conversion efficiency of solar collectors have suggested different collector designs and improved collector materials. Over the last 25 years, the study of nanofluids and their applications have revolutionized material science, and nanotechnology has found applications in improving solar collector materials. This article reviews the impact of different nanomaterials on the efficiency of solar collectors. The study also outlines the limitations of applying nanofluids and discusses the long-term challenges of their application to solar collectors. Nanofluids have the potential to improve the overall efficiency of most solar collectors, however, the full potential of nanofluids in heat transfer applications cannot be completely achieved until some of the questions regarding hysteresis, stability, and the overall predictability of nanofluids are answered.

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Section: Nanofluid Viscositymentioning

confidence: 99%

Nanofluids in Solar Thermal Collectors: Review and Limitations

et al. 2020

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“…Reduced graphene oxide (rGO) is the restoration of pristine graphene properties to GO through the reduction, removal of Oxide. This is of value due to the ease at which GO can be handled and suspended in water, but the need to recuperate conductivity properties in the end product [ 29 , 30 ].…”

Section: Carbon Based Inksmentioning

confidence: 99%

Rheological Issues in Carbon-Based Inks for Additive Manufacturing

et al. 2019

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As the industry and commercial market move towards the optimization of printing and additive manufacturing, it becomes important to understand how to obtain the most from the materials while maintaining the ability to print complex geometries effectively. Combining such a manufacturing method with advanced carbon materials, such as Graphene, Carbon Nanotubes, and Carbon fibers, with their mechanical and conductive properties, delivers a cutting-edge combination of low-cost conductive products. Through the process of printing the effectiveness of these properties decreases. Thorough optimization is required to determine the idealized ink functional and flow properties to ensure maximum printability and functionalities offered by carbon nanoforms. The optimization of these properties then is limited by the printability. By determining the physical properties of printability and flow properties of the inks, calculated compromises can be made for the ink design. In this review we have discussed the connection between the rheology of carbon-based inks and the methodologies for maintaining the maximum pristine carbon material properties.

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“…They considered the heat of transfer of the nanofluid among two plates. Dilan et al 19 studied nanofluids effective viscosity based on suspended nanoparticles. A carbon nanotubes based multifunctional hybrid nanoliquid has been considered by Rossella 20 .…”

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confidence: 99%

The non-Newtonian maxwell nanofluid flow between two parallel rotating disks under the effects of magnetic field

Ahmadian

Bilal

Khan

et al. 2020

Sci Rep

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The main feature of the present numerical model is to explore the behavior of Maxwell nanoliquid moving within two horizontal rotating disks. The disks are stretchable and subjected to a magnetic field in axial direction. The time dependent characteristics of thermal conductivity have been considered to scrutinize the heat transfer phenomena. The thermophoresis and Brownian motion features of nanoliquid are studied with Buongiorno model. The lower and upper disk's rotation for both the cases, same direction as well as opposite direction of rotation is investigated. The subsequent arrangement of the three dimensional Navier Stoke’s equations along with energy, mass and Maxwell equations are diminished to a dimensionless system of equations through the Von Karman’s similarity framework. The comparative numerical arrangement of modeled equations is further set up by built-in numerical scheme “boundary value solver” (Bvp4c) and Runge Kutta fourth order method (RK4). The various physical constraints, such as Prandtl number, thermal conductivity, magnetic field, thermal radiation, time relaxation, Brownian motion and thermophoresis parameters and their impact are presented and discussed briefly for velocity, temperature, concentration and magnetic strength profiles. In the present analysis, some vital characteristics such as Nusselt and Sherwood numbers are considered for physical and numerical investigation. The outcomes concluded that the disk stretching action opposing the flow behavior. With the increases of magnetic field parameter $$M$$ M the fluid velocity decreases, while improving its temperature. We show a good agreement of the present work by comparing with those published in literature.

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Predicting the effective viscosity of nanofluids based on the rheology of suspensions of solid particles

Cited by 69 publications

References 67 publications

Nanofluids in Solar Thermal Collectors: Review and Limitations

Nanofluids in Solar Thermal Collectors: Review and Limitations

Rheological Issues in Carbon-Based Inks for Additive Manufacturing

The non-Newtonian maxwell nanofluid flow between two parallel rotating disks under the effects of magnetic field

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