Comparative study on Newtonian/non-Newtonian base fluids with magnetic/non-magnetic nanoparticles over a flat plate with uniform heat flux

Hakeem, A.K. Abdul; Saranya, S.; Ganga, B.

doi:10.1016/j.molliq.2016.12.087

Cited by 54 publications

(25 citation statements)

References 22 publications

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“…Geometrical illustration oUnder the assumptions as mentioned above, momentum, temperature and concentration pro situation, can be mathematically expressed as foll ℝ Λ ) numbers. Their respective mathematical expressions are given as: properties (electrical conductivity, thermal conductivity, heat capacity and he base fluid (Sodium alginate) and nano additives (CuO and Cu)[9,10]. ependent, incompressible, laminar flow of sodium alginate (NaAlg) based (Cu − nofluid, moving over a curved surface, at = ℝ , has been under consideration (see curved surface endures a linear stretchable velocity = with > 0 in the irection, while, a boundary layer has been established by the fluid, in the radial ( ) urvy shape of the surface can be determined via ℝ , the distance between the surface d the curved surface become flat, for an infinitely large radius of curvature ℝ .…”

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confidence: 99%

“…Thermo-physical properties (electrical conductivity, thermal conductivity, heat capacity and density) of the base fluid (Sodium alginate) and nano additives (CuO and Cu)[9,10].…”

mentioning

confidence: 99%

“…REVIEW 6 of 24 hysical properties (electrical conductivity, thermal conductivity, heat capacity and e fluid (Sodium alginate) and nano additives (CuO and Cu)[9,10]. , a boundary layer has been established by the fluid, in the radial ( ) hape of the surface can be determined via ℝ , the distance between the surface curved surface become flat, for an infinitely large radius of curvature ℝ .…”

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confidence: 99%

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Nonlinear Thermal Radiation and Chemical Reaction Effects on a (Cu−CuO)/NaAlg Hybrid Nanofluid Flow Past a Stretching Curved Surface

et al. 2019

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The boundary layer flow of sodium alginate ( NaAlg ) based ( Cu − CuO ) hybrid nanofluid, over a curved expanding surface, has been investigated. Heat and mass transport phenomena have also been analyzed. Moreover, the impacts of chemical reaction, magnetic field and nonlinear thermal radiation are also a part of this study. This arrangement has great practical relevance, especially in the polymer and chemical industries. We have extended the Bruggeman model to make it capable of capturing the thermal conductivity of ( Cu − CuO ) / NaAlg hybrid nanofluid. We have employed some suitable transformations to obtain the governing system of nonlinear ODEs. Runge − Kutta − Fehlberg algorithm, accompanied by a shooting technique, has been employed to solve the governing system numerically. The changes in the flow and heat transfer distribution, due to various parameters, have been captured and portrayed in the form of graphs. It has been found that the addition of the nanometer-sized materials, significantly boosts the thermal and heat transport properties of the host fluid, and these phenomena seem to be more prominent, in the case of ( Cu − CuO ) / NaAlg hybrid nanofluid.

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confidence: 99%

“…Thermo-physical properties (electrical conductivity, thermal conductivity, heat capacity and density) of the base fluid (Sodium alginate) and nano additives (CuO and Cu)[9,10].…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Nonlinear Thermal Radiation and Chemical Reaction Effects on a (Cu−CuO)/NaAlg Hybrid Nanofluid Flow Past a Stretching Curved Surface

et al. 2019

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“…They found that heat transfer in Jeffrey nanofluid is good as compared with Maxwell and Oldroyd-B nanofluid. Recently, Raza et al (2016) discussed the flow of nanofluid over a porous channel and Hakeem et al (2017) provided a comparative analysis of the flow of Newtonian/non-Newtonian nanofluid over a flat surface in the presence of constant heat flux. They concluded that heat transfer performance of non-magnetic nanoparticles is more as compared with magnetic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Impact of Thermal Radiation and Chemical Reaction on Unsteady 2d Flow of Magnetic-Nanofluids Over an Elongated Plate Embedded With Ferrous Nanoparticles

Sulochana¹,

Ashwinkumar²,

Samrat³

2018

Frontiers in Heat and Mass Transfer

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This study reports the flow, thermal and concentration attributes of magnetic-nanofluids past an elongated plate with thermal radiation and chemical reaction. The flow considered is two-dimensional and time-dependent. The pressure gradient and ohmic heating terms are neglected in this analysis. The flow governing PDEs are transformed into ODEs using appropriate conversions. Further, the set of ODEs are solved analytically using perturbation technique. The flow quantities such as velocity, thermal and concentration fields are discussed under the influence of various pertinent parameters namely volume fraction of nanoparticle, magnetic field, stretching parameter, Soret number, radiation and chemical reaction with the assistance of graphical representations. Moreover, wall friction, reduce Nusselt and Sherwood numbers are calculated and deployed in tabular forms. Dual nature is observed for water-based Fe3O4 nanofluid and Ethylene glycol based Fe3O4 nanofluid. The results indicate that water-based ferrofluids are highly influenced as compared with Ethylene Glycol based ferrofluids. Also, the nanoparticle volume fraction plays a vital role in controlling the wall friction and heat transfer performance. Also, Soret parameter has a tendency to integrate high density particles in a boundary to raise the thickness of a surface.

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“…During the application of the MF, the magnetic particles assemble to form chain-like structures, thus increasing the viscosity [4,5]. Besides the rheological investigation of FFs, intensive research has been conducted on their thermal transport properties too [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Rheological and Thermal Transport Characteristics of a Transformer Oil Based Ferrofluid

et al. 2018

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Ferrofluids based on insulating liquids are intensively studied as a potential substitute of liquid dielectric in high voltage technologies. In this work we focus on the experimental investigation of flow and thermal transport characteristics of a ferrofluid based on transformer oil (Mogul) and iron oxide nanoparticles. The magneto-rheological behavior of the ferrofluid was studied by a rotational rheometer in the shear rate range from 1 to 1000 s ¡1 and magnetic field up to 1 T. By means of a thermal constants analyzer and a transient plane source method we obtained the thermal conductivity, specific heat and thermal diffusivity values for the studied oil and the ferrofluid. It is shown that the Newtonian character of the ferrofluid changes to a non-Newtonian with application of the magnetic field. The notable magneto-viscous effect has been observed especially at low shear rates. We found that the doping of the transformer oil by 3 wt% of the nanoparticles results in a thermal conductivity enhancement by about 3.2%.

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Comparative study on Newtonian/non-Newtonian base fluids with magnetic/non-magnetic nanoparticles over a flat plate with uniform heat flux

Cited by 54 publications

References 22 publications

Nonlinear Thermal Radiation and Chemical Reaction Effects on a (Cu−CuO)/NaAlg Hybrid Nanofluid Flow Past a Stretching Curved Surface

Nonlinear Thermal Radiation and Chemical Reaction Effects on a (Cu−CuO)/NaAlg Hybrid Nanofluid Flow Past a Stretching Curved Surface

Impact of Thermal Radiation and Chemical Reaction on Unsteady 2d Flow of Magnetic-Nanofluids Over an Elongated Plate Embedded With Ferrous Nanoparticles

Rheological and Thermal Transport Characteristics of a Transformer Oil Based Ferrofluid

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