Magnetoviscosity in magnetic fluids: Testing different models of the magnetization equation

Weng, Huei Chu; Chen, Cha’o-Kuang; Chang, Ming‐Huei

doi:10.1080/23080477.2013.11665586

Cited by 4 publications

(1 citation statement)

References 30 publications

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“…). Recently, the flow and heat transfer issues of nanofluids (carry liquids with nanostructures) [ 1 , 2 , 3 , 4 ] and rarefied gases (gases in relatively low-density environments) [ 5 , 6 , 7 , 8 ] at the mini/microscale have arisen from reductions in the size of fluidic devices or their new applications in practice, e.g., microchip cooling, microheat exchanging, microelectrochemical cell transport, microreactor hydrogenation-reaction conduction [ 9 , 10 , 11 , 12 ]. The physical aspects in microfluidic devices may deviate from those presented at the macroscale.…”

Section: Introductionmentioning

confidence: 99%

Combined Forced and Thermocreep Convection through a Long Horizontal Microchannel

Weng

2016

Micromachines

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This study examines how thermal creep affects the mixed convection in a long horizontal parallel-plate microchannel under a pressure drop and a temperature rise. The analytical solutions of the fully developed thermal-flow fields and the corresponding characteristics are derived based on the Maxwell boundary conditions with thermal creep and presented for the physical properties of air at the standard reference state. The calculated thermal-flow characteristics reveal that thermal creep has an appreciable effect on the velocity slip, flow rate, and heat transfer rate but a negligible effect on the flow drag. Such a creep effect could be further magnified by decreasing the pressure drop or increasing the Knudsen number.

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Section: Introductionmentioning

confidence: 99%

Combined Forced and Thermocreep Convection through a Long Horizontal Microchannel

Weng

2016

Micromachines

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Micropolar effects on the effective shear viscosity of nanofluids

Bondarenko,

Bukichev,

Dzhaga

et al. 2024

Physics of Fluids

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The modified size-dependent Einstein's and Brinkman's solutions are established for the effective shear viscosity of rigid particle suspensions taking into account the micropolar effects in the base fluid. Solutions are obtained based on the homogenization approach and allow us to take into account the influence of the particle size. Two non-classical parameters arise in the considered micropolar solutions: the length scale parameter and the coupling (micropolarity) number of the base fluid. The solutions developed are validated using tests performed with polydimethylsiloxane based TiO2 nanofluids as well as other published data on the size-dependent shear viscosity of different nanofluids. Good agreement between the predictions and the experimental data is established across a wide range of volume fractions and size of nanoparticles. The possibility for unique identification (at given temperature) of the micropolar parameters of the base fluids is shown. Temperature-dependent values of non-classical rotational and spin viscosities of polydimethylsiloxane, ethylene glycol, and water are evaluated.

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The Effect of a Magnetic Field on the Profile of Sessile Magnetic Nanofluid Droplets

Chien

Weng

2017

Smart Science

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Magnetoviscosity in magnetic fluids: Testing different models of the magnetization equation

Cited by 4 publications

References 30 publications

Combined Forced and Thermocreep Convection through a Long Horizontal Microchannel

Combined Forced and Thermocreep Convection through a Long Horizontal Microchannel

Micropolar effects on the effective shear viscosity of nanofluids

The Effect of a Magnetic Field on the Profile of Sessile Magnetic Nanofluid Droplets

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