Thermal performance of CuO-water nanofluid flows within a wavy channel under the influence of an external magnetic field

Articles in Press

Document Type : Full Length Research Article

Authors

Laboratory of Development in Mechanics and Materials, LDMM, Department of Mechanical Engineering, University of Djelfa, Djelfa, Algeria

Abstract

Simulation analysis to evaluate the impact of combined enhancement techniques on forced convection flow pattern and heat transfer is investigated in the present work. More precisely, a Newtonian nanofluidic flow flowing in a complex sinusoidal geometry subjected to an external magnetic field is studied. This last, is applied uniformly/non-uniformly for different values of the Hartmann number ranging from 0 to 50 on the fluid domain and oriented with the horizontal by; γ=0, γ= π/4 and γ=π/2. The changes in hydrodynamic and thermal behavior are examined in terms of secondary flow intensity, velocity profile, shear and rotation rates, the temperature profile pattern and the non-dimensional Nusselt number. Findings illustrate that the improvement in parietal heat transfer varies depending on the applied procedure, where the percentage of increase varies from 1% to 14% depending on each case. Specifically, the full application of the magnetic field at an angle of 𝜋/2 improves the average Nusselt number from 10.5 to 12 with almost 14% compared to the no-magnetic-field scenario. Also, applying a partial magnetic field in the 𝜋/4 and 𝜋/2 orientations leads to an improvement in heat exchange of 3%, 5%, 7%, and 10% compared to the base case.

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Main Subjects

Journal of Heat and Mass Transfer Research

Articles in Press, Accepted Manuscript
Available Online from 01 June 2025

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History

  • Receive Date: 09 October 2024
  • Revise Date: 27 March 2025
  • Accept Date: 01 June 2025

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