Heat Transfer Enhancement in Nanofluid Flows Augmented by Magnetic Flux

Authors

Kozhikkatil Sunil Arjun, Division of Mechanical Engineering, School of Engineering,Cochin University of Science & Technology, Kalamassery 682022, IndiaFollow
Rakesh Kumar, Department of Mechanical Engineering, Indian Institute of Technology, Dhanbad 826004, IndiaFollow

Abstract

Heat transfer enhancement could be realized using magnetohydrodynamics together with nanofluids specifically in flow micro-convection in a microtube, flow past a vertical porous plate, and square duct flow with discrete heat sources numerically. A critical value for the Rayleigh number, a maximum value for the magnetic field strength, a low Reynolds number, and volume concentrations exists for thermal enhancement to simulate nanofluid flow in a microtube. Heat transfer enhancement is observed with a reduction in the magnetic field strength in a flow past a heated porous vertical plate. Alumina nanofluid subjected to Hartmann number 10 can boost 81% enhancement in Nusselt number in a square duct at lower Reynolds number using three discrete heat sources under the impact of thermal and solutal buoyancy. A 4% increase in the cooling effect near the center of the last heat source in a nanofluid flow is of practical use in hot spot cooling.

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Recommended Citation

Arjun, Kozhikkatil Sunil and Kumar, Rakesh (2023) "Heat Transfer Enhancement in Nanofluid Flows Augmented by Magnetic Flux," Makara Journal of Technology: Vol. 27: Iss. 3, Article 2.
DOI: 10.7454/mst.v27i3.1618
Available at: https://scholarhub.ui.ac.id/mjt/vol27/iss3/2