Entropy analysis on unsteady MHD biviscosity nanofluid flow with convective heat transfer in a permeable radiative stretchable rotating disk

Mandal, S.; Shit, G. C.

doi:10.1016/j.cjph.2021.07.036

Cited by 41 publications

(14 citation statements)

References 48 publications

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“…The heat transfer rate in this environment deteriorates. Entropy analysis of Williamson nanofluid, unsteady nanofluid, and electrothermal couple stress nanofluid flow have been explained explicitly by Mandal and Shit [ 17 , 18 , 19 ]. Furthermore, increasing the parameter for quantifying the levels of thermal radiation from 0 to 0.8 reduces the average Nusselt number by 4.2%.…”

Section: Background Informationmentioning

confidence: 99%

Darcy-Forchheimer Flow of Water Conveying Multi-Walled Carbon Nanoparticles through a Vertical Cleveland Z-Staggered Cavity Subject to Entropy Generation

et al. 2022

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To date, when considering the dynamics of water conveying multi-walled carbon nanoparticles (MWCNT) through a vertical Cleveland Z-staggered cavity where entropy generation plays a significant role, nothing is known about the increasing Reynold number, Hartmann number, and Darcy number when constant conduction occurs at both sides, but at different temperatures. The system-governing equations were solved using suitable models and the Galerkin Finite Element Method (GFEM). Based on the outcome of the simulation, it is worth noting that increasing the Reynold number causes the inertial force to be enhanced. The velocity of incompressible Darcy-Forchheimer flow at the middle vertical Cleveland Z-staggered cavity declines with a higher Reynold number. Enhancement in the Hartman number causes the velocity at the center of the vertical Cleveland Z-staggered cavity to be reduced due to the associated Lorentz force, which is absent when Ha = 0 and highly significant when Ha = 30. As the Reynold number grows, the Bejan number declines at various levels of the Hartmann number, but increases at multiple levels of the Darcy number.

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Section: Background Informationmentioning

confidence: 99%

Darcy-Forchheimer Flow of Water Conveying Multi-Walled Carbon Nanoparticles through a Vertical Cleveland Z-Staggered Cavity Subject to Entropy Generation

et al. 2022

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“…Multiple exact solutions of a water-based graphene nanofluid created by porous shrinking or stretching a sheet with a heat sink or source are given by Aly 33 , while Khan et al 34 have obtained the closed-form exact analytical solution for the axisymmetric hybrid nanofluid on a permeable non-linear radially shrinking/stretching sheet. Different model geometries include the investigation of Casson fluid flows past a nonlinear permeable stretching cylinder on a porous medium 35 , a cylinder of non-uniform radius 36 , two permeable spheres 37 , and a rotating disk 38 .…”

Section: Introductionmentioning

confidence: 99%

Influence of carbon nanotube suspensions on Casson fluid flow over a permeable shrinking membrane: an analytical approach

Mahesh

Mahabaleshwar

Sofos

2023

Sci Rep

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The present work employs the single-wall carbon nanotube (SWCNT) and multiwall carbon nanotube (MWCNT) models on axisymmetric Casson fluid flow over a permeable shrinking sheet in the presence of an inclined magnetic field and thermal radiation. By exploiting the similarity variable, the leading nonlinear partial differential equations (PDEs) are converted into dimensionless ordinary differential equations (ODEs). The derived equations are solved analytically, and a dual solution is obtained as a result of the shrinking sheet. The dual solutions for the associated model are found to be numerically stable once the stability analysis is conducted, and the upper branch solution is more stable compared to lower branch solutions. The impact of various physical parameters on velocity and temperature distribution is graphically depicted and discussed in detail. The single wall carbon nanotubes have been found to achieve higher temperatures compared to multiwall carbon nanotubes. According to our findings, adding carbon nanotubes volume fractions to convectional fluids can significantly improve thermal conductivity, and this can find applicability in real world applications such as lubricant technology, allowing for efficient heat dissipation in high-temperatures, enhancing the load-carrying capacity and wear resistance of the machinery.

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“…In this study, it has been observed that in the case of hybrid NPs the augmentation in Eckert number and thermal field has been enhanced by a corresponding increase in volumetric fraction. Mandal and Shit [30] have deliberated the MHD fluid flow with an upshot of radiations upon a stretched and porous surface. The production of irreversibility has also been determined and analyzed in this work.…”

Section: Introductionmentioning

confidence: 99%

Cattaneo–Christov heat flux theory toward the magnetohydrodynamic micropolar hybrid nanofluid flow past a stretching/shrinking sheet with non‐uniform heat source/sink and thermal radiation

et al. 2022

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In this investigation, a 2D flow of micropolar hybrid nanofluid (HNF) is considered over stretching/shrinking sheet. The magnetic effect is employed in a perpendicular direction to the surface of sheet. To improve the thermal conductivity of the fluid flow, the nanoparticles (NPs) of iron oxide and graphene oxide are mixed with water to obtain the HNF and water is used as a base fluidfalse(Fnormale3normalO4+GO/normalH2Ofalse)$\;( {{\rm{F}}{{\rm{e}}_3}{{\rm{O}}_4} + {\rm{GO}}/{{\rm{H}}_2}{\rm{O}}} )$. The proposed equations of the modeled problem are converted to dimensionless form by implementing the similar variables. The analytical solution of the modeled equations is evaluated by mean of homotopy analysis method. The impacts of the embedded constraints on the HNF flow profiles are discoursed theoretically by incorporating a graphical view. Special cases (stretching, shrinking) are considered for the HNF in order to examine the impacts of the embedded parameters on the HNF flow profiles. The results showed that the expanding values of the stretching parameter, the HNF flow particles are pushed in a forward direction due to which fluid moves swiftly for both shrinking/stretching cases. The velocity profiles are increased with the increasing material parameter for the stretching case, while a reducing impact is found for the shrinking case. Also, the increasing material parameter enhances the microrotation profiles the HNF flow. Furthermore, the material parameter shows the same behavior for both stretching and shrinking cases. The increasing volume fraction of the solid NPs reduces the velocity profiles for stretching case, while augments for shrinking case. On the other hand, it is observed that the increasing volume fractions of the NPs increase the microrotation and temperature profiles for both stretching and shrinking cases.

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Entropy analysis on unsteady MHD biviscosity nanofluid flow with convective heat transfer in a permeable radiative stretchable rotating disk

Cited by 41 publications

References 48 publications

Darcy-Forchheimer Flow of Water Conveying Multi-Walled Carbon Nanoparticles through a Vertical Cleveland Z-Staggered Cavity Subject to Entropy Generation

Darcy-Forchheimer Flow of Water Conveying Multi-Walled Carbon Nanoparticles through a Vertical Cleveland Z-Staggered Cavity Subject to Entropy Generation

Influence of carbon nanotube suspensions on Casson fluid flow over a permeable shrinking membrane: an analytical approach

Cattaneo–Christov heat flux theory toward the magnetohydrodynamic micropolar hybrid nanofluid flow past a stretching/shrinking sheet with non‐uniform heat source/sink and thermal radiation

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