1. Dual Solutions and Stability Analysis of Micropolar Nanofluid Flow with Slip Effect on Stretching/Shrinking Surfaces
- Author
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Sumera Dero, Azizah Mohd Rohni, Azizan Saaban, Ilyas Khan, Asiful H. Seikh, El-Sayed Mohmed Sherif, and Kottakkaran Sooppy Nisar
- Subjects
Control and Optimization ,Materials science ,Renewable Energy, Sustainability and the Environment ,020209 energy ,Energy Engineering and Power Technology ,Angular velocity ,02 engineering and technology ,Slip (materials science) ,Mechanics ,021001 nanoscience & nanotechnology ,Thermophoresis ,Physics::Fluid Dynamics ,Boundary layer ,Shooting method ,Nanofluid ,Thermal radiation ,Ordinary differential equation ,0202 electrical engineering, electronic engineering, information engineering ,micropolar nanofluid ,partial slips ,dual solutions ,shrinking/stretching surface ,shooting method ,Electrical and Electronic Engineering ,0210 nano-technology ,Engineering (miscellaneous) ,Energy (miscellaneous) - Abstract
The purpose of the present paper is to investigate the micropolar nanofluid flow on permeable stretching and shrinking surfaces with the velocity, thermal and concentration slip effects. Furthermore, the thermal radiation effect has also been considered. Boundary layer momentum, angular velocity, heat and mass transfer equations are converted to non-linear ordinary differential equations (ODEs). Then, the obtained ODEs are solved by applying the shooting method and in the results, the dual solutions are obtained in the certain ranges of pertinent parameters in both cases of shrinking and stretching surfaces. Due to the presence of the dual solutions, stability analysis is done and it was found that the first solution is stable and physically feasible. The results are also compared with previously published literature and found to be in excellent agreement. Moreover, the obtained results reveal the angular velocity increases in the first solution when the value of micropolar parameter increases. The velocity of nanofluid flow decreases in the first solution as the velocity slip parameter increases, whereas the temperature profiles increase in both solutions when thermal radiation, Brownian motion and the thermophoresis parameters are increased. Concentration profile increases by increasing N t and decreases by increasing N b .
- Published
- 2019
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