scholarly journals Numerical study for mixed convection flow of Oldroyd-B nanofluid subject to activation energy and binary chemical reaction

2020 ◽  
pp. 174-174
Author(s):  
Dina Abuzaid ◽  
Malik Ullah
Keyword(s):  
Activation Energy ◽  
Mixed Convection ◽  
Heat Transport ◽  
Shooting Method ◽  
Numerical Study ◽  
Brownian Diffusion ◽  
Convection Flow ◽  
Mixed Convection Flow ◽  
Developing Flow ◽  
Numeric Solution

This attempt discusses mixed convection Oldroyd-B nanoliquid flow over a doubly stratified surface in existence of activation energy. Impacts of Brownian diffusion and thermophoretic are additionally accounted. The non-linear frameworks are simplified by suitable variables. Shooting method is utilized to develop numeric solution of resulting issue. Graphs have been composed just to explore that how concentration and the temperature are impacted by different developing flow factors. Mass and heat transport rates are additionally tabulated and dissected. Furthermore, the temperature and concentration distributions are enhanced for larger thermophoresis parameter.

scholarly journals Significance of Arrhenius Activation Energy and Binary Chemical Reaction in Mixed Convection Flow of Nanofluid Due to a Rotating Disk

Coatings ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 86 ◽  
Author(s):  
Metib Alghamdi
Keyword(s):  
Activation Energy ◽  
Transfer Rate ◽  
Shooting Method ◽  
Rotating Disk ◽  
Brownian Diffusion ◽  
Convection Flow ◽  
Mixed Convection Flow ◽  
Arrhenius Activation Energy ◽  
Nusselt Numbers ◽  
Flow Parameters

This article addresses mixed convective 3D nanoliquid flow by a rotating disk with activation energy and magnetic field. Flow was created by a rotating disk. Velocity, concentration and temperature slips at the surface of a rotating disk were considered. Impacts of Brownian diffusion and thermophoretic were additionally accounted for. The non-linear frameworks are simplified by suitable variables. The shooting method is utilized to develop the numerical solution of resulting problem. Plots were prepared just to explore that how concentration and temperature are impacted by different pertinent flow parameters. Sherwood and Nusselt numbers were additionally plotted and explored. Furthermore, the concentration and temperature were enhanced for larger values of Hartman number. However, the heat transfer rate (Nusselt number) diminishes when the thermophoresis parameter enlarges.

Numerical Study of Combined Radiation and Turbulent Mixed Convection Heat Transfer in a Compartment Containing Participating Media

2015 ◽  
Vol 31 (4) ◽  
pp. 467-480 ◽  
Author(s):  
A. Asghari ◽  
S. A. Gandjalikhan Nassab ◽  
A. B. Ansari
Keyword(s):  
Mixed Convection ◽  
Stokes Equations ◽  
Numerical Study ◽  
Fluid Dynamic ◽  
Convection Heat Transfer ◽  
Simple Algorithm ◽  
Convection Flow ◽  
Algebraic Equations ◽  
Mixed Convection Flow ◽  
Participating Media

AbstractThe effect of radiation on turbulent mixed convection flow, generated by two plane wall jets with different temperatures inside a cavity was studied numerically. The medium is treated as a gray, absorbing, emitting and scattering. The two-dimensional Reynolds-average Navier-Stokes equations, coupled with the energy equation are solved by using the computational fluid dynamic (CFD) techniques, while the AKN low-Reynolds-number model is employed for computation of turbulence fluctuations. The Boussinesq approximation is used to calculate the buoyancy term, and the radiation part of the problem is solved by numerical solution of the radiative transfer equation (RTE) with the well known discrete ordinate method (DOM). The governing equations are discretized by the finite volume technique into algebraic equations and solved with the SIMPLE algorithm. The effects of radiation conduction parameter, scattering albedo, optical thickness and Richardson number on the thermal behavior of the system are carried out. Results show that the gas radiation has a significant effect on the temperature distribution inside the turbulent mixed convection flow.

scholarly journals Laminar MHD Mixed Convection Flow Of Newtonian Fluid Between Vertical Parallel Plates Channel

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Nusselt Number ◽  
Mixed Convection ◽  
Newtonian Fluid ◽  
Vertical Channel ◽  
Convection Flow ◽  
Parallel Plates ◽  
Mixed Convection Flow ◽  
Governing Equations ◽  
Material Parameters ◽  
Developing Flow

This study investigates MHD mixed convection flow in a two parallel-plates vertical channel with reference to laminar, thermal and hydrodynamical developing flow of Newtonian fluid. The boundaries are considered to be isothermal with equal temperatures. The governing equations are solved numerically. Also, their dependence upon certain material parameters have been studied. Velocity, temperature, pressure gradient and Nusselt number profiles have also been presented

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