Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions
Abstract
:1. Introduction
- (a)
- How the rate of heat transfer improves with the addition of alumina nanoparticles in the base fluid water ().
- (b)
- What is the effect of the angle of inclination of the external magnetic field on the skin friction coefficient?
- (c)
- What is the behavior of the heat transfer rate and skin friction coefficient against the rising rates of both surface stretching and shrinking?
- (d)
- What the difference is between the stable and unstable results of the study and at what point the two solutions meet.
2. Mathematical Modeling
3. Results and Discussion
3.1. Analysis of Result
3.2. Discussion of Results
3.2.1. Skin Friction Coefficient
3.2.2. Nusselt Number (Heat Transfer Rate)
4. Conclusions
- The escalation of and escalates only for the original solution, and for the second solution, reverse phenomenon is detected.
- The escalating values of and , respectively, escalates and reduces the friction drag.
- For the positive values of , always declines, and for the negatively rising values of , it continuously enhances.
- The rate of escalates and reduces, respectively, with the escalating values of , and .
- The lower values of , continuously reduce the rate of , and for the ascent values of , it always enhances.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
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Alshehri, N.A.; Abidi, A.; Khan, M.R.; Reddy, Y.D.; Rasheed, S.; Alali, E.; Galal, A.M. Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions. Crystals 2021, 11, 1359. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11111359
Alshehri NA, Abidi A, Khan MR, Reddy YD, Rasheed S, Alali E, Galal AM. Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions. Crystals. 2021; 11(11):1359. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11111359
Chicago/Turabian StyleAlshehri, Nawal A., Awatef Abidi, Muhammad Riaz Khan, Yanala Dharmendar Reddy, Saim Rasheed, Elham Alali, and Ahmed M. Galal. 2021. "Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions" Crystals 11, no. 11: 1359. https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11111359