Non-Uniform Heat Source or Sink Effect on the Flow of 3D Casson Fluid in the Presence of Soret and Thermal Radiation

2015 ◽  
Vol 20 ◽  
pp. 112-129 ◽  
Author(s):  
Chalavadi Sulochana ◽  
Samrat S. Payad ◽  
Naramgari Sandeep
Keyword(s):  
Differential Equations ◽  
Heat Source ◽  
Thermal Radiation ◽  
Three Dimensional ◽  
Casson Fluid ◽  
Shooting Technique ◽  
Uniform Heat ◽  
Sink Effect ◽  
Flow Heat ◽  
Source Sink

This study deals with the three-dimensional magnetohydrodynamic Casson fluid flow, heat and mass transfer over a stretching surface in the presence of non-uniform heat source/sink, thermal radiation and Soret effects. The governing partial differential equations are transformed to nonlinear ordinary differential equations by using similarity transformation, which are then solved numerically using Runge-Kutta based shooting technique. We obtained good accuracy of the present results by comparing with the exited literature. The influence of dimensionless parameters on velocity, temperature and concentration profiles along with the friction factor, local Nusselt and Sherwood numbers are discussed with the help of graphs and tables. It is found that the positive values of non-uniform heat source/sink parameters acts like heat generators and helps to develop the temperature profiles of the flow.

scholarly journals Heat and mass transfer in 3-D MHD Williamson-Casson fluids flow over a stretching surface with non-uniform heat source/sink

2019 ◽  
Vol 23 (1) ◽  
pp. 281-293 ◽  
Author(s):  
Chakravarthula Raju ◽  
Naramgari Sandeep ◽  
Mohamed Ali ◽  
Abdullah Nuhait
Keyword(s):  
Mass Transfer ◽  
Heat Source ◽  
Heat And Mass Transfer ◽  
Mass Transfer Rate ◽  
Casson Fluid ◽  
Heterogeneous Reactions ◽  
Stretching Surface ◽  
Flow Heat ◽  
The Individual ◽  
Source Sink

A mathematical model has been proposed for investigating the flow, heat, and mass transfer in Williamson and Casson fluid-flow over a stretching surface. For controlling the temperature and concentration fields we considered the space and temperature dependent heat source/sink and homogeneous-heterogeneous reactions, respectively. Numerical results are carried out for this study by using Runge-Kutta based shooting technique. The effects of governing parameters on the flow, heat and mass transfer are illustrated graphically. Also computed the skin-friction coefficients for axial and transverse directions along with the local Nusselt number. In most of the studies, homogeneous-heterogeneous profiles were reduced into a single concentration equation by assuming equal diffusion coefficients. For the physical relevance, without any assumptions we studied the individual behavior of the homogeneous-heterogeneous profiles. It is found that the rate of heat and mass transfer in Casson fluid is significantly large while equated with the heat and mass transfer rate of Williamson fluid.

scholarly journals MHD and Slip Effect in Micropolar Hybrid Nanofluid and Heat Transfer over a Stretching Sheet with Thermal Radiation and Non-uniform Heat Source/Sink

CFD letters ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 121-130
Author(s):  
Nur Faizzati Ahmad Faizal ◽  
Norihan Md Ariffin ◽  
Yong Faezah Rahim ◽  
Mohd Ezad Hafidz Hafidzuddin ◽  
Nadihah Wahi
Keyword(s):  
Heat Transfer ◽  
Angular Velocity ◽  
Heat Source ◽  
Thermal Radiation ◽  
Stretching Sheet ◽  
Velocity Profiles ◽  
Hybrid Nanofluid ◽  
Temperature Profiles ◽  
Uniform Heat ◽  
Source Sink

In the presence of slips, non-uniform heat source/sink, thermal radiation and magnetohydrodynamic (MHD), micropolar hybrid nanofluid and heat transfer over a stretching sheet has been studied. The problem is modelled as a mathematical formulation that involves a system of the partial differential equation. The similarity approach is adopted, and self-similar ordinary differential equations are obtained and then those are solved numerically using the shooting method. The flow field is affected by the presence of physical parameters such as micropolar parameter, magnetic field parameter, suction parameter and slip parameter whereas the temperature field is affected by thermal radiation parameter, space-dependent parameter, temperature-dependent internal heat generation/absorption parameter, Prantl number and Biot number. The skin friction coefficient, couple stress and local Nusselt number are tabulated and analysed. The effects of the governing parameters on the velocity profiles, angular velocity profiles and temperature profiles are illustrated graphically. The results of velocity profiles, angular velocity profiles and temperature profiles are also obtained for several values of each parameters involved.

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