Using Micropolar Nanofluid under a Magnetic Field to Enhance Natural Convective Heat Transfer around a Spherical Body

Abstract

An analysis is discussed of the heat and mass transfer for micropolar nanofluid in presence of natural convection from a spherical body with magneto-hydrodynamic (MHD) effects. The constant wall temperature boundary condition is also studied. By employing proper similarity transformations, the governing equations are converted into a set of partial differential equations (PDEs) with the used boundary conditions, which can then be solved numerically via the efficient Keller-box implicit numerical finite difference method. The numerical results of impacts of the controlling parameters on heat transfer physical quantities have been presented, tabular and graphically, by MATLAB symbolic software. Comparisons of the current study results to previously published results show good agreement, indicating that our numerical computations are legitimate and accurate. Increasing nanoparticle volume fraction is observed to depress local skin friction, Nusselt number, and angular velocity while the reverse effects are observed for velocity and temperature.

Newtonian Heating on Casson Mixed Convection Transport by Ternary Hybrid Nanofluids over Vertical Stretching Sheet: Numerical Study

“…The numerical methodology was utilized to complete the numerical outcomes for the studied problem, where an above-considered system of partial differential Eq. (10) to Eq. ( 12) will be solved by the Keller box efficient method.…”

“…the convection boundary layer flow of laminar fluid flow which around the stretching sheet and vertical stretching sheet in the nanofluid has been studied by Khan and Pop [4], Makinde and Aziz [5], Kuznetsov and Nield [6], Kausar et al, [7]. Swalmeh et al, [8,9], Yaseen et al, [10], and Alwawi et al, [11] investigated the influences and impacts of micropolar nanofluid on the physical quantities around solid sphere and horizontal cylinder. Also, the heat transfer convection in Casson nanofluid considered by Alwawi et al, [12][13][14].…”

Energy Transfer through a Magnetized Williamson Hybrid Nanofluid Flowing around a Spherical Surface: Numerical Simulation

“…Alwawi et al [23][24][25][26][27] reported the effect of the magnetic field on the heat transmission rate of Casson nanofluid employing the Tiwari-Das model. See also [28][29][30][31][32].…”

A computational numerical simulation of free convection catalysts for magnetized micropolar ethylene glycol via copper and graphene oxide nanosolids

“…[46][47][48][49][50][51][52][53] According to a review of previous literature, 6,32,33,54 and based on the above potential and accomplishments, [17][18][19] the current gap has yet to be explored, despite the fact that this area has recently received tremendous attention from several scholars, as mentioned in previous studies. [17][18][19][45][46][47][48] Consequently, this work aims to numerically simulate the steady free convection of ethylene glycol as a micropolar fluid supported by copper nanoparticles or graphene oxide around a cylinder in the boundary layer region with an applied transverse magnetic field and a constant wall boundary temperature condition. On the other hand, the objective of this consideration is restricted to constructing the mathematical formulation for the studied problem subject to the boundary condition as dimensional governing equations and using suitable transformations to convert these equations to a system of partial differential equations (PDEs).…”

“…Alwawi et al 44 examined the promotion of MHD mixed convection of micropolar liquid past a cylindrical surface. Yaseen et al 45 studied the improvement of heat transfer through a magnetized micropolar liquid moving about a spherical surface. The previous references highlight studies involving the MHD effect.…”