The Magneto-Natural Convection Flow of a Micropolar Hybrid Nanofluid over a Vertical Plate Saturated in a Porous Medium
Abstract
:1. Introduction
2. Problem Formulation
3. Adaptive Chebyshev Differential Quadrature Method
4. Results and Discussion
5. Conclusions
- -
- As the micropolar parameter boosted the skin friction coefficient, the Nusselt number diminished with the IHG and WIHG cases.
- -
- Both the skin friction coefficient and the Nusselt number magnified with upsurging in the Darcy number whilst the opposite impact occurred with the growth in the micro-rotation parameter.
- -
- The thermal radiation parameter contributed to ensuing that the skin friction coefficients and heat transport rates were ever-growing.
- -
- The skin friction coefficient improved and the Nusselt number declined by swelling the values of the nanoparticle volume fraction.
- -
- Both the skin friction coefficient and the Nusselt number declined significantly by strengthening the magnetic force.
- -
- A growth in the suction parameter yielded a sufficient enhancement in the Nusselt number and the skin friction coefficient with the IHG and WIHG cases.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Nomenclature
Magnetic field strength | |
Heat capacity | |
Darcy number | |
Dimensionless angular velocity | |
Gravity | |
Grashof number | |
Density of micro-inertia | |
Permeability | |
Magnetic parameter | |
Dimensional angular velocity | |
Micro-rotation parameter | |
Prandtl number | |
Radiation heat flux | |
Heat generation | |
Micropolar parameter | |
Radiation parameter | |
Dimensional temperature | |
Velocity components | |
Dimensional coordinates | |
Greek symbols | |
Density of the fluid | |
Viscosity of spin gradient | |
σ* | Stefan–Boltzmann constant |
κ* | Coefficients of mean absorption |
Solid volume fraction | |
Coefficient conductivity for electricity | |
Stream function | |
Effective dynamic viscosity | |
Volumetric expansion coefficient | |
Dimensionless temperature | |
Subscripts | |
Conditions at the surface | |
Base fluid | |
Conditions in the free stream | |
Nanofluid | |
Hybrid nanofluid |
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Thermophysical Properties | H2O | Al2O3 | Cu |
---|---|---|---|
1.67 | |||
Ferdows et al. [33] | Present Study | |||||||
---|---|---|---|---|---|---|---|---|
IHG | WHG | IHG | WIHG | IHG | WIHG | IHG | WIHG | |
0 | 0.9564 | 0.7464 | −0.3486 | 0.402 | 0.9564 | 0.7464 | −0.3486 | 0.4020 |
0.25 | 0.879 | 0.6804 | −0.353 | 0.3991 | 0.8791 | 0.6804 | −0.3531 | 0.3991 |
0.5 | 0.8169 | 0.6278 | −0.3571 | 0.3963 | 0.8169 | 0.6278 | −0.3570 | 0.3963 |
1 | M | n | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
IHG | WIHG | IHG | WIHG | |||||||
0 | 2 | 0.5 | 0.5 | 1 | 0.1 | 1 | 0.7237 | 0.6433 | −0.4505 | 0.4179 |
0.5 | 0.6788 | 0.5996 | −0.4807 | 0.3956 | ||||||
1 | 0.6438 | 0.5664 | −0.5061 | 0.3772 | ||||||
0.5 | 0 | 0.5 | 0.5 | 1 | 0.1 | 1 | 0.9542 | 0.8401 | −0.3963 | 0.4589 |
2 | 0.6788 | 0.5996 | −0.4807 | 0.3956 | ||||||
6 | 0.4395 | 0.3950 | −0.5761 | 0.3289 | ||||||
0.5 | 2 | 0 | 0.5 | 1 | 0.1 | 1 | 0.7313 | 0.6460 | −0.4833 | 0.3932 |
0.5 | 0.6788 | 0.5996 | −0.4807 | 0.3956 | ||||||
1 | 0.6070 | 0.5362 | −0.4771 | 0.3988 | ||||||
0.5 | 2 | 0.5 | 0 | 1 | 0.1 | 1 | 0.4023 | 0.3646 | −0.5544 | 0.2980 |
0.25 | 0.5314 | 0.4756 | −0.5194 | 0.3450 | ||||||
0.5 | 0.6788 | 0.5996 | −0.4807 | 0.3956 | ||||||
0.5 | 2 | 0.5 | 0.5 | 1 | 0.1 | 1 | 0.6788 | 0.5996 | −0.4807 | 0.3956 |
2 | 0.6686 | 0.6139 | −0.4250 | 0.4687 | ||||||
3 | 0.6639 | 0.6219 | −0.3737 | 0.5314 | ||||||
0.5 | 2 | 0.5 | 0.5 | 1 | 0.05 | 1 | 0.6760 | 0.5948 | −0.4698 | 0.3998 |
0.1 | 0.6788 | 0.5996 | −0.4807 | 0.3956 | ||||||
0.15 | 0.6797 | 0.6010 | −0.4925 | 0.3903 | ||||||
0.5 | 2 | 0.5 | 0.5 | 1 | 0.1 | 1 | 0.6788 | 0.5996 | −0.4807 | 0.3956 |
20 | 0.9187 | 0.8087 | −0.4060 | 0.4514 | ||||||
100 | 0.9325 | 0.8208 | −0.4022 | 0.4543 |
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Mahdy, A.; El-Zahar, E.R.; Rashad, A.M.; Saad, W.; Al-Juaydi, H.S. The Magneto-Natural Convection Flow of a Micropolar Hybrid Nanofluid over a Vertical Plate Saturated in a Porous Medium. Fluids 2021, 6, 202. https://doi.org/10.3390/fluids6060202
Mahdy A, El-Zahar ER, Rashad AM, Saad W, Al-Juaydi HS. The Magneto-Natural Convection Flow of a Micropolar Hybrid Nanofluid over a Vertical Plate Saturated in a Porous Medium. Fluids. 2021; 6(6):202. https://doi.org/10.3390/fluids6060202
Chicago/Turabian StyleMahdy, A., E. R. El-Zahar, A. M. Rashad, W. Saad, and H. S. Al-Juaydi. 2021. "The Magneto-Natural Convection Flow of a Micropolar Hybrid Nanofluid over a Vertical Plate Saturated in a Porous Medium" Fluids 6, no. 6: 202. https://doi.org/10.3390/fluids6060202