Numerical investigation of heat transfer characteristics for blood/water-based hybrid nanofluids in free convection about a circular cylinder

Abstract

This paper investigates hybrid nanofluids flowing around a circular cylinder of free convection under the constant surface heat flux. Nanoparticles of copper oxides, Gold, and Aluminum (CuO, Au, Al) are considered to support the heat transfer performance of blood/water-based hybrid nanofluids. The governing model for hybrid nanofluids which is in form of non-linear partial differential equations (PDEs) are first transformed to a more convenient form by similarity transformation approach then approximated numerically by the Keller box method. Several comparatives are performed in this work resulting in the superiority of the hybrid-nanofluid over regular nanofluid in terms of heat transfer rate, velocity, and local skin friction coefficient. Findings confirmed that the surface temperature and temperature field are augmented, with increasing volume fraction for nanoparticles. Also, Gold nanoparticles give a higher result for all examined physical properties than Aluminum and copper oxides nanoparticles.

Applications of a Group Theoretical Method on Biomagnetic Fluid Flow and Heat Transfer for Different Shapes of Fe3O4 Magnetic Particles under the Influence of Thermal Radiation and a Magnetic Dipole over a Cylinder

“…where S = ψ, θ, H and i, j = x, r, t. Equation ( 21) is said to be invariantly transformed under (25) and (26), whenever…”

“…Similarly, Equation ( 22) is invariantly transformed under ( 25) and (26), by assuming that for some function I 2 (a 1 , a 2 ), which may be constant the following holds:…”

“…Souayeh et al [25] performed a numerical analysis of the flow and heat transfer of water-silver/gold nanofluid flow through an electromagnetohydrodynamic (EMHD) peristaltic channel in the presence of activation energy and radiation and microorganisms. Alwawi et al [26] applied the Keller box method solutions to recapitulate human blood and water with CuO, Al, Au nanoparticles assuming a constant surface heat flux subject to a circular cylinder. The authors reported that gold particles gave better numerical results compared to Aluminum and copper.…”

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

“…More references on the analysis of energy transport with regards to free and mixed convection over cylindrical geometries can be seen in. [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.…”

“…More references on the analysis of energy transport with regards to free and mixed convection over cylindrical geometries can be seen in. 46–53…”