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- W2890594345 abstract "The present study deals with MHD (Magnetohydrodynamic) natural convection associated to a micropolar nanofluid flowing in a radiative porous medium. An elliptical heat source is placed in the porous medium. The Darcy model and local thermal non-equilibrium condition are acceptable to simulate the porous medium. KKL model is employed to simulate the nanofluid flow. This model associates the viscosity and thermal conductivity with the temperature and considers the effects of Brownian motions on these two thermos-physical properties. The Galerkin finite element approach is utilized to dissolve the equations. The impacts of governing key parameters are investigated on the streamlines, isotherms of fluid and solid phases, and isolines of micro-rotation as well as the rates of heat transfer. The range of these parameters are Darcy-Rayleigh number Ra = 10–1000, Hartman number Ha = 0–50, nanoparticles volume fraction φ = 0–0.04, interface heat transfer coefficient H = 1–1000, porosity ε = 0.1–0.9, modified thermal conductivity ratio Kr = 0.1–10, vortex viscosity parameter Δ = 0–2 and radiation parameter Rd = 0–2. The results illustrate that the strength of the particles' micro-rotations slightly increases when Rd grows. The increment of porosity increases and decreases the strength of the flow and micro-rotations of the particles, respectively. In addition, an increase in Δ, Ha and ε enhance the total Nusselt number, while a reverse trend can be observed for H, Rd, Kr and Ra." @default.
- W2890594345 created "2018-09-27" @default.
- W2890594345 creator A5008288416 @default.
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- W2890594345 date "2018-12-01" @default.
- W2890594345 modified "2023-09-28" @default.
- W2890594345 title "MHD natural convection of a micropolar nanofluid flowing inside a radiative porous medium under LTNE condition with an elliptical heat source" @default.
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- W2890594345 doi "https://doi.org/10.1016/j.molliq.2018.09.010" @default.
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