MHD natural convection of a micropolar nanofluid flowing inside a radiative porous medium under LTNE condition with an elliptical heat source

Hashemi, Heidar; Namazian, Zafar; Zadeh, Seyed Mohsen Hashem; Mehryan, S.A.M.

doi:10.1016/j.molliq.2018.09.010

Cited by 27 publications

(6 citation statements)

References 28 publications

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“…The outcomes revealed that a raise in the viscosity-parameters results in the improvement of the heat transfer and convective flow intensification. Hashemi et al [25] investigated the effect of using micropolar nanofluids in a porous medium cavity.…”

Section: Introductionmentioning

confidence: 99%

Thermal Non-Equilibrium Heat Transfer Modeling of Hybrid Nanofluids in a Structure Composed of the Layers of Solid and Porous Media and Free Nanofluids

et al. 2019

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The free convection heat transfer of hybrid nanofluids in a cavity space composed of a clear flow, porous medium and a solid part is addressed. The cavity is heated from the bottom and cooled from the top. The side walls are well insulated. The upper part of the cavity is a clear space with no porous or solid materials and is filled with hybrid nanofluid. The bottom part is divided into two parts of a porous space saturated with the hybrid nanofluid and a solid thermal conductive block. There are conjugate heat transfer mechanisms between the solid block and the porous medium filled with the hybrid nanofluid as well as the hybrid nanofluid in the clear space. For the porous medium model, the local thermal non-equilibrium effects are considered. The hybrid nanofluids contain copper (20 nm) and alumina nanoparticles (40 nm) hybrid nanoparticles. The governing equations for the flow and heat transfer of the hybrid nanofluid in the clear space and the porous medium are introduced. Considering the conjugate heat transfer between the solid block and the hybrid nanofluid fluid in the pores and the porous matrix, appropriate boundary conditions for heat channeling are utilized. The governing equations are transformed into non-dimensional form to generalize the model. The finite element method is employed to solve the equations. The grid check and validation procedure are performed. Subsequently streamlines, isotherms, and Nusselt number are studied as important aspects of flow and heat transfer in the cavity. The increase in the portion of the clear flow part in the cavity enhances heat transfer due to better hybrid nanofluid circulation.

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Section: Introductionmentioning

confidence: 99%

Thermal Non-Equilibrium Heat Transfer Modeling of Hybrid Nanofluids in a Structure Composed of the Layers of Solid and Porous Media and Free Nanofluids

et al. 2019

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“…The behavior of flow in microstructures/nanostructures such as hard drives, microvalves, micropumps, and micronozzles is indicated by the slip boundary conditions. Recent studies regarding the slip motion can be found in Hayat et al, 2013;Mukhopadhyay, 2013;Shen et al, 2015;Hayat et al, 2017b;Ul Haq et al, 2017;Hashemi et al, 2018;and Hayat et al, 2019. This article examines the magnetic dipole flow and melting heat transfer over suspended dust particles with carbon nanotubes and the slip effect. To compose a nanofluid, the water base fluid is mixed up with two types of carbon nanotubes [single-walled carbon nanotubes (SWCNTs) and multiwalled carbon nanotubes (MWCNTs)].…”

Section: Introductionmentioning

confidence: 99%

Significances of magnetic dipole flow and melting heat transfer over suspended dust particles along with carbon nanotubes

Alfannakh

2022

Front. Energy Res.

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The current research letter is materialized to examine the combined effect of thermophoretic dust particle diffusion and magnetic dipole flow toward a stretchable sheet. The slip effect is used in the development of the momentum equation. Water is considered as a base fluid, and single-walled carbon nanotubes and multiwalled carbon nanotubes are nanoparticles. The aforementioned rheological model is formulated in the way of nonlinear partial differential equations (PDEs). The structure of nonlinear biformed ordinary differential equations (ODEs) is obtained from the modeled nonlinear PDEs by incorporating valid sameness transformations. The system of ODEs is then figured out by employing the tool of MATLAB function bvp4c. The significant nature of the contributing parameter for both the single-wall and multiwall cases is presented via graphs. From the results, we conclude that an impact of the melting effect, mounting of Pr, reported a thinner thermal boundary layer thickness. Furthermore, a clear rise of nanofluid temperature is noticed for the greater melting M1 parameter. The slip parameter plays a significant role in the enhancement of the velocity profile.

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“…Authors ensued that the mixture of nanoparticles with water precipitation improves the coefficient of transformation of thermal energy by convection. More significant research on this area can be found from references [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Modified Hybrid Nano Fluid Impact on a MHD Peristaltic wavy Diverging Tube along with connective conditions

Iftikhar

Sadaf

2022

Preprint

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This study focuses our attention towards the peristaltic flow of Zinc, Titanium and Copper modified hybrid nanoparticles, water is occupied as a carrier fluid in a cylindrical diverging tube. The projected model presents the study of MHD, wall properties, slip impact and convective boundary conditions on the flow pattern. The governing partial differential equations and the boundary conditions for computation are evolved by using appropriate transformations. The exact solution for the consequential system of nonlinear differential equations is possible to accomplish using the Cauchy Euler’s method. The graphical depiction of velocity and temperature profile using emerging parameters are simulated and examined. The addition of magnetic field in the subjected study shows its distinction in the water flow. Another domain is the addition of heat emission/absorption term in the energy equation to maintain the homogeneous temperature for the water flow. Streamlines pattern is also discussed for modified nano, hybrid nano and nanofluid. We expect the use of these metal nanoparticles in the peristaltic study would be helpful and provide efficient output for drug delivery purposes.

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MHD natural convection of a micropolar nanofluid flowing inside a radiative porous medium under LTNE condition with an elliptical heat source

Cited by 27 publications

References 28 publications

Thermal Non-Equilibrium Heat Transfer Modeling of Hybrid Nanofluids in a Structure Composed of the Layers of Solid and Porous Media and Free Nanofluids

Thermal Non-Equilibrium Heat Transfer Modeling of Hybrid Nanofluids in a Structure Composed of the Layers of Solid and Porous Media and Free Nanofluids

Significances of magnetic dipole flow and melting heat transfer over suspended dust particles along with carbon nanotubes

Modified Hybrid Nano Fluid Impact on a MHD Peristaltic wavy Diverging Tube along with connective conditions

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