Nonlinear radiative heat flux in Oldroyd-B nanofluid flow with Soret and Dufour effects

2019 ◽  
Vol 10 (8) ◽  
pp. 3103-3113 ◽  
Author(s):  
Tasawar Hayat ◽  
Madiha Rashid ◽  
Ahmed Alsaedi
Keyword(s):  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Nanofluid Flow ◽  
Soret And Dufour Effects ◽  
Nonlinear Radiative Heat Flux

Soret and Dufour Effects on Three Dimensional Upper-Convected Maxwell Fluid with Chemical Reaction and Non-Linear Radiative Heat Flux

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
M. Ramzan ◽  
M. Bilal ◽  
Jae Dong Chung
Keyword(s):  
Heat Flux ◽  
Differential Equations ◽  
Chemical Reaction ◽  
Radiative Heat ◽  
Three Dimensional ◽  
Maxwell Fluid ◽  
Radiative Heat Flux ◽  
Soret And Dufour Effects ◽  
Non Linear ◽  
Linear Differential

Abstract Three dimensional chemically reactive upper-convected Maxwell (UCM) fluid flow over a stretching surface is considered to examine Soret and Dufour effects on heat and mass transfer. During the formulation of energy equation, non-linear radiative heat flux is considered. Similarity transformation reduces the partial differential equations of flow problem into ordinary differential equations. These non-linear differential equations are then solved by using bvp4c MATLAB built-in function. A comparison of the present results with the published work is also included. Effects of some prominent parameters such as Soret and Dufour number, chemical reaction parameter, Prandtl number, Schmidt number and thermal radiation on velocity, temperature and concentration are discussed graphically and numerically. A comparison with the previously published work is also included in a tabular form.

scholarly journals Impact of melting heat transfer and nonlinear radiative heat flux mechanisms for the generalized Burgers fluids

2017 ◽  
Vol 7 ◽  
pp. 4025-4032 ◽  
Author(s):  
Waqar Azeem Khan ◽  
Masood Khan ◽  
Muhammad Irfan ◽  
A.S. Alshomrani
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Melting Heat ◽  
Melting Heat Transfer ◽  
Nonlinear Radiative Heat Flux

MHD micropolar nanofluid flow through an inclined channel with entropy generation subjected to radiative heat flux, viscous dissipation and multiple slip effects

2020 ◽  
Vol 16 (6) ◽  
pp. 1475-1496
Author(s):  
A. Roja ◽  
B.J. Gireesha ◽  
B.C. Prasannakumara
Keyword(s):  
Heat Flux ◽  
Viscous Dissipation ◽  
Entropy Generation ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Nanofluid Flow ◽  
Content Type ◽  
Inclined Channel ◽  
Micropolar Nanofluid ◽  
Flow Through

PurposeMiniaturization with high thermal performance and lower cost is one of the advanced developments in industrial science chemical and engineering fields including microheat exchangers, micro mixers, micropumps, cooling microelectro mechanical devices, etc. In addition to this, the minimization of the entropy is the utilization of the energy of thermal devices. Based on this, in the present investigation, micropolar nanofluid flow through an inclined channel under the impacts of viscous dissipation and mixed convection with velocity slip and temperature jump has been numerically studied. Also the influence of magnetism and radiative heat flux is used.Design/methodology/approachThe nonlinear system of ordinary differential equations are obtained by applying suitable dimensionless variables to the governing equations, and then the Runge–Kutta–Felhberg integration scheme is used to find the solution of velocity and temperature. Entropy generation and Bejan number are calculated via using these solutions.FindingsIt is established to notice that the entropy generation can be improved with the aspects of viscous dissipation, magnetism and radiative heat flux. The roles of angle of inclination (α), Eckert number (Ec), Reynolds number (Re), thermal radiation (Rd), material parameter (K),  slip parameter (δ), microinertial parameter (aj), magnetic parameter (M), Grashof number (Gr) and pressure gradient parameter (A) are demonstrated. It is found that the angle of inclination and Grashof number enhances the entropy production while it is diminished with material parameter and magnetic parameter.Originality/valueElectrically conducting micropolar nanofluid flow through an inclined channel subjected to the friction irreversibility with temperature jump and velocity slip under the influence of radiative heat flux has been numerically investigated.

Entropy generation minimization (EGM) for convection nanomaterial flow with nonlinear radiative heat flux

2018 ◽  
Vol 260 ◽  
pp. 279-291 ◽  
Author(s):  
Muhammad Ijaz Khan ◽  
Siraj Ullah ◽  
Tasawar Hayat ◽  
Muhammad Imran Khan ◽  
Ahmed Alsaedi
Keyword(s):  
Heat Flux ◽  
Entropy Generation ◽  
Radiative Heat ◽  
Radiative Heat Flux ◽  
Entropy Generation Minimization ◽  
Nonlinear Radiative Heat Flux
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