3-D magnetohydrodynamic AA7072-AA7075/methanol hybrid nanofluid flow above an uneven thickness surface with slip effect

Abstract

A 3-D magnetohydrodynamic flow of hybrid nanofluid across a stretched plane of non-uniform thickness with slip effects is studied. We pondered aluminum alloys of AA7072 and AA7072 + AA7075 in methanol liquid. The aluminum alloys amalgamated in this study are uniquely manufactured materials, possessing enhanced heat transfer features. AA7072 alloy is a composite mixture of Aluminum & Zinc in the ratio 98 & 1 respectively with added metals Silicon, ferrous and Copper. Equally, AA7075 is a mixture of Aluminum, Zinc, Magnesium, and Copper in the ratio of ~90, ~6, ~3 and ~1 respectively with added metals Silicon ferrous and Magnesium. Numerical solutions are attained using R-K based shooting scheme. Role of physical factors on the flow phenomenon are analyzed and reflected by plots and numerical interpretations. Results ascertain that heat transfer rate of the hybrid nanoliquid is considerably large as matched by the nanofluid. The impact of Lorentz force is less on hybrid nanofluid when equated with nanofluid. Also, the wall thickness parameter tends to improve the Nusselt number of both the solutions. Advanced electronic gadgets frequently encounter challenges because of heat control from enhanced thermal rise or reduction of available space for the thermal emission. Such drawbacks are overwhelmed by developing a preeminent model for heat-repelling gadgets or by amplifying thermal transport features. Nanofluid is a unique and well-suited fluid to fit for all needs. Initially, Choi 1 has experimented on the treatment of solid particles in conventional liquids to improve its thermal performance characterized as nanoliquid. Due to its marvelous thermal and chemical properties, less volume and enhanced thermal properties, it is emerging as an extensively used cooling agent. Nanofluid has entered in many areas of science and engineering, and few are witnessed in nuclear cooling, biomedical applications, electronic cooling, etc. Because of its massive demand, it has attracted the research community to develop a new class of nanofluids. Few researchers (2-11) provided the theoretical and experimental studies for developing nanofluids in terms of preparation methods, applications and enhancing its thermal properties. Further, Animasaun et al. 12 deliberated the comparative study for distinct magnitude aluminum nanomaterials suspended in water, namely, 36 nanometers and 47 nanometers and predicted that 36 nm nanoparticle used to attain maximum flow velocity than other. Asadi et al. 13 explained the flow of nanofluid (10 nanometer-sized Fe 3 O 4 nanoparticles) across a sinusoidal crumpled section accounting the magnetic field effects. Later, Kumar et al. 14 elaborated the stagnated flow caused by non-Newtonian liquids over a strained cylinder using CC heat flux model. They concluded that friction factor parameter hikes significantly in Williamson liquid as compared with Casson liquid under the influence of thermal relaxation parameter. This kind of work was prolonged by Bai et al. 15 using Oldroyd-B nanofluid. MHD describes t...

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