Abstract
This numerical investigation intends to present the impact of nanoparticles volume fraction, Casson, and magnetic force on natural convection in the boundary layer region of a horizontal cylinder in a Casson nanofluid under constant heat flux boundary conditions. Methanol is considered as a host Casson fluid. Graphite oxide (GO), single and multiple walls carbon nanotubes (SWCNTs and MWCNTs) nanoparticles have been incorporated to support the heat transfer performances of the host fluid. The Keller box technique is employed to solve the transformed governing equations. Our numerical findings were in an excellent agreement with the preceding literature. Graphical results of the effect of the relevant parameters on some physical quantities related to examine the behavior of Casson nanofluid flow were obtained, and they confirmed that an augmentation in Casson parameter results in a decline in local skin friction, velocity, or temperature, as well as leading to an increment in local Nusselt number. Furthermore, MWCNTs are the most efficient in improving the rate of heat transfer and velocity, and they possess the lowest temperature.
Highlights
The significance of convection from a cylindrical geometry lies in the fact that they are used in numerous physical and engineering applications; these wide usages made researchers direct their great efforts towards this problem
The two-dimensional steady state boundary layer flow of CNTs/Graphite oxide (GO)-Methanol based Casson nanofluid under MHD impact from a horizontal circular cylinder of radius a has been considered
To validate our numerical procedure and to confirm that our approach is suitable for the examination issue, comparisons for local skin friction coefficient Gr1/5 C f and surface temperature θw (ξ, 0) with numerical findings in the prior literature has been made, the obtained outcomes achieved a close agreement with previously published results by Merkin and Pop [5], Molla et al [43] and Alkasasbeh et al [44] as shown in Tables 1 and 2
Summary
The significance of convection from a cylindrical geometry lies in the fact that they are used in numerous physical and engineering applications; these wide usages made researchers direct their great efforts towards this problem. Examined Magnetohydrodynamic (MHD) free convection flow of Williamson non-Newtonian fluid around a circular cylinder considering Newtonian heating. Buongiorno’s model for studying the behavior of water nanofluid flowing over a horizontal shrinking cylinder in the presence of the magnetic field and thermal slip. Besthapu et al [25] examined the magnetohydrodynamics flow of non-Newtonian nanofluid about a convective stretching surface with thermal radiation and slip effects. Refer to these related significant studies [26,27,28,29,30,31]. According to the aforementioned studies for these distinctive nanoparticles, the efforts were directed to examine heat transfer improvement in MHD natural convection flow of methanol as a host. See [5,43,44]
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