A numerical investigation of free convection MHD flow of Walters-B nanofluid over an inclined stretching sheet under the impact of Joule heating

Moosavi

et al. 2019

Self Cite

In this study, the physical aspects of magnetohydrodynamic flow and heat transfer of a hybrid base nanofluid in a porous medium under the effect of the shape, thermal radiation, and Lorentz force have been examined using the finite element method. Copper oxide (CuO) of various shapes was dispersed into ethylene glycol 50%‐water 50% (likewise for Fe3O4). The Darcy model is chosen because of the porous medium. The effect of changeable, diverse parameters, for example, Hartmann number (Ha), volume fraction (ϕ), radiation parameter (Rd), and buoyancy force (Ra), on the streamlines, temperature gradient, and Nusselt number are shown through contours. Outputs show that the Fe3O4 nanoparticles have a smaller temperature gradient than that of CuO nanoparticles. The Nusselt number Nuave decreases for a larger (Ha) number, but increases Nitalicuave for a larger Ra, Rd. The blade shaped nanoparticle has a larger impact on increasing Nuave compared with that of other shapes.

Section: Introductionmentioning

confidence: 99%

Numerical simulation of nanoparticle shape and thermal ray on a CuO/C₂H₆O₂–H₂O hybrid base nanofluid inside a porous enclosure using Darcy's law

Moosavi

et al. 2019

Self Cite

“…The above method will be reiterated since the nonlinear solution converges with a convergence criterion of

10^{- 6}

. Plus, the step size is taken as

Δ η = 0.001

…”

Section: Numerical Approachmentioning

confidence: 99%

“…A review on Couette stream and heat transfer of nanoliquid past two rings in the presence of electrical field was done by Hajmohammadi and Tork . Analysis of the impact of thermal ray and heat source/sink on the MHD Poiseuille flow between a horizontal channel with variable thermal conductivity using ann analytical technique has been done by Ellahi et al The influence of heat production/imbibition, Joule heating and thermal ray on MHD Walters‐B nanofluid flow over an inclined stretching plate has been investigated by Gholinia et al Plus, following the subjects discussed above, many noteworthy papers have been published that can be referred to (Refs) for further understanding.…”

Section: Introductionmentioning

confidence: 99%

MHD boundary layer of GO–H₂O nanoliquid flow upon stretching plate with considering nonlinear thermal ray and Joule heating effect

Shahlaei

Hassankolaei

2019

This essay investigates a steady three-dimensional laminar boundary layer flow of magnetohydromagnetic radiative of graphene oxide-water nanofluid over an extensible surface in the attendance of couple stress, thermal ray, and Joule heating impact. Governing equations are solved numerically using the Runge-Kutta-Fehlberg 4.5 approach after the transformation of partial differential equations into ordinary differential equations. The main goal of this essay is to check the impacts of variations in the value of numerous parameters on the velocity along x and y-axis directions ( f η g η ′( ), ′( )) and temperature (θ η ( )) profiles, and also on the local skin friction coefficient along x and y-axis directions in the presence of couple stress (K > 0) and the lack of couple stress (K = 0) and local Nusselt number for the two modes of nonlinear (θ > 1 w ) and linear (θ = 1 w ) thermal ray. The results elucidate that the local Nusselt number for both θ > 1 w and θ = 1 w modes has a direct connection with radiation parameter (R) and Prandtl number (Pr) and an inverse relation with Eckert number (Ec) and Hartman number (Ha). In addition, the skin friction coefficient has an inverse relation with couple stress (K). K E Y W O R D S couple stress, GO-water nanofluid, Joule heating, magnetohydrodynamic (MHD), thermal radiation

“…The results show that thermal field decline with the gradual raise in Prandtl number. The impacts of heat generation/absorption, thermal ray and Joule heating on MHD Walters-B nanofluid flow upon an inclined stretching plate have been investigated by Gholinia et al 30 Check of (Ag-Cu)/H 2 O nanofluid flow upon a rotating disk for entropy generation was done by Hayat. 31 The results display that surface drag force increases for larger amounts of Ag-Cu volume function.…”

Section: Introductionmentioning

confidence: 99%

Numerical treatment of magneto Carreau nanofluid over a stretching sheet considering Joule heating impact and nonlinear thermal ray

Ghobadi

Hassankolaei

2019

In this essay, the magnetohydrodynamic flow of a Carreau nanoliquid upon a radiative stretching plate has been reviewed. The impacts of Joule heating and thermal ray are considered. The thermophoresis phenomenon and Brownian motion are applied to model nanoparticles (Buongiorno's model). Governing equations are solved numerically using Runge-Kutta-Fehlberg 4.5 after the transformation of partial differential equations into ordinary differential equations. In the obtained outcomes of investigating the impacts of different parameters on the change in velocity, concentration, and temperature profiles for two cases of shear-thinning liquid and shear thickening liquid are reported as diagrams. Also, in the final segment of this essay, the impacts of diverse parameters on the skin friction coefficient and the local Nusselt number are investigated. The novel findings of current research illustrate that the values of local Nusselt number and surface drag force for shear thickening liquid are higher than shear-thinning liquid. Also, the temperature profile θ η ( ) has direct relationships with thermal radiation and magnetic field. K E Y W O R D S Buongiorno's model, Carreau nanofluid, Joule heating effect, magnetohydrodynamic (MHD), thermal ray