Streaming potential and heat transfer of nanofluids in microchannels in the presence of magnetic field

Zhao, Guangpu; Jian, Yongjun; Li, Fengqin

doi:10.1016/j.jmmm.2016.01.025

Cited by 42 publications

(13 citation statements)

References 49 publications

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“…Waqas et al 35 studied the MHD mixed convection flow of non-Newtonian liquid over a nonlinear stretched sheet. Zhao et al 36 discussed the effect of magnetic field heat transfer of nanofluids in microchannels. Several other significant studies in this concern are due to [37][38][39][40] .…”

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confidence: 99%

Magneto-Hybrid Nanofluids Flow via Mixed Convection past a Radiative Circular Cylinder

El‐Zahar

Rashad

Saad

et al. 2020

Sci Rep

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The goal of the current analysis is to scrutinize the magneto-mixed convective flow of aqueous-based hybrid-nanofluid comprising Alumina and Copper nanoparticles across a horizontal circular cylinder with convective boundary condition. The energy equation is modelled by interpolating the non-linear radiation phenomenon with the assisting and opposing flows. The original equations describing the magneto-hybrid nanofluid motion and energy are converted into non-dimensional equations and solved numerically using a new hybrid linearization-Chebyshev spectral method (HLCSM). HLCSM is a high order spectral semi-analytical numerical method that results in an analytical solution in η-direction and thereby the solution is valid in overall the η-domain, not only at the grid points. The impacts of diverse parameters on the allied apportionment are inspected, and the fallouts are described graphically in the investigation. The physical quantities of interest containing the drag coefficient and the heat transfer rate are predestined versus fundamental parameters, and their outcomes are elucidated. It is witnessed that both drag coefficient and Nusselt number have greater magnitude for Cu-water followed by hybrid nanofluid and Al2O3-water. Moreover, the value of the drag coefficient declines versus the enlarged solid volume fraction. To emphasize the originality of the current analysis, the outcomes are compared with quoted works, and excellent accord is achieved in this consideration.

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confidence: 99%

Magneto-Hybrid Nanofluids Flow via Mixed Convection past a Radiative Circular Cylinder

El‐Zahar

Rashad

Saad

et al. 2020

Sci Rep

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“…The second and forth terms on the right side of Equation (19) represent the volumetric energy generation caused by the viscous dissipation and Joule heat, which induced by Joule heating effect together with the contribution from electromagnetic effect, especially for the case of a large strength of magnetic field [58]. Furthermore, in a thermally fully developed case, we have:…”

Section: Thermal Transport For Thermally Fully Developed Flowmentioning

confidence: 99%

Electromagnetohydrodynamic Electroosmotic Flow and Entropy Generation of Third-Grade Fluids in a Parallel Microchannel

et al. 2020

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The present paper discusses the electromagnetohydrodynamic (EMHD) electroosmotic flow (EOF) and entropy generation of incompressible third-grade fluids in a parallel microchannel. Numerical solutions of the non-homogeneous partial differential equations of velocity and temperature are obtained by the Chebyshev spectral collocation method. The effects of non-Newtonian parameter Λ, Hartman number Ha and Brinkman number Br on the velocity, temperature, Nusselt number and entropy generation are analyzed in detail and shown graphically. The main results show that both temperature and Nusselt number decrease with the non-Newtonian physical parameter, while the local and total entropy generation rates exhibit an adverse trend, which means that non-Newtonian parameter can provoke the local entropy generation rate. In addition, we also find that the increase of non-Newtonian parameter can lead to the increase of the critical Hartman number Hac.Numerous theoretical and experimental works in the literature are available on the analysis of the behaviors of EMHD flow. Jang and Lee [21] found low magnetic field could bring about impressive increments to the fluid velocity. A practical EMHD pump has been constructed by Lemoff and Lee [22], in which an electrolytic solution was propelled by the Lorentz force along a micro-channel. Jian and Chang [23] obtained approximate analytical solutions of the EMHD velocity distribution under the influence of a non-uniform magnetic field. Under the combined action of electroosmotic and electromagnetic forces, the heat transfer characteristics of EMHD flows in a narrow channel have been analyzed by Chakraborty et al. [24]. Sarkar et al. [25] carried out a study on streaming potential of EMHD flow combined with interfacial slip through a microparallel channel, and the effects of electrical double-layer (EDL) formation were also taken into account. The results show that the flow rate was greatly improved, even at lower values of surface potential.In recent years, it has been gradually realized that non-Newtonian fluids are more imperative than Newtonian fluids in a variety of industrial and engineering applications. For the non-Newtonian models, the relationship between shear stress and rate of strain is non-linear. Various non-Newtonian MHD flow models can be found in the existing literature [26][27][28][29] and hydrodynamic studies on non-Newtonian electroosmotic flows in reference [30,31]. Third-grade fluids model are able to discern normal stress differences and to describe shear thinning/thickening effect. Polymers, liquid metals, suspensions and so on belong to third-grade fluids. Wang and Jian [32] studied the EMHD third-grade fluids flow between two parallel microchannels and obtained the approximate analytical solutions of velocity and temperature by the perturbation method. Akgül et al. [33] discussed the analytical and numerical solutions of electroosmotical flow of third-grade fluid between parallel plates. Danish et al. [34] analyzed the flow characteristics of the Poiseuille and...

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“…Convection heat transfer characteristics of nanofluids in microsystems in the presence of a magnetic field have also been the subject of a number of studies [171,172]. Malvandi and Ganji [173] and Malvandi et al [174] found that a strong magnetic field had a negative effect on nanofluid performance.…”

Section: Nanofluids For Microsystem Coolingmentioning

confidence: 99%

Mathematical Modeling and Computer Simulations of Nanofluid Flow with Applications to Cooling and Lubrication

Kleinstreuer

2016

Fluids

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There is a growing range of applications of nanoparticle-suspension flows with or without heat transfer. Examples include enhanced cooling of microsystems with low volume-fractions of nanoparticles in liquids, improved tribological performance with lubricants seeded with nanoparticles, optimal nanodrug delivery in the pulmonary as well as the vascular systems to combat cancer, and spray-coating using plasma-jets with seeded nanoparticles. In order to implement theories that explain experimental evidence of nanoparticle-fluid dynamics and predict numerically optimum system performance, a description of the basic math modeling and computer simulation aspects is necessary. Thus, in this review article, the focus is on the fundamental understanding of the physics of nanofluid flow and heat transfer with summaries of microchannel-flow applications related to cooling and lubrication.

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Streaming potential and heat transfer of nanofluids in microchannels in the presence of magnetic field

Cited by 42 publications

References 49 publications

Magneto-Hybrid Nanofluids Flow via Mixed Convection past a Radiative Circular Cylinder

Magneto-Hybrid Nanofluids Flow via Mixed Convection past a Radiative Circular Cylinder

Electromagnetohydrodynamic Electroosmotic Flow and Entropy Generation of Third-Grade Fluids in a Parallel Microchannel

Mathematical Modeling and Computer Simulations of Nanofluid Flow with Applications to Cooling and Lubrication

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