Optimisation of MHD flow within trapezoidal cavity containing hybrid nanofluid by artificial neural network
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 18 June 2024
Abstract
Purpose
This study aims to numerically investigate heat transport in a trapezoidal cavity using hybrid nanoparticles (Ag-$Al_2O_3$). Unlike previous studies, this one covers magnetohydrodynamics, joule heating with viscous dissipation, heat absorption and generation. The left and right sides of the chasm are frigid. The upper wall heats, whereas the bottom wall remains adiabatic.
Design/methodology/approach
After reducing the system of dimensional equations to dimensionless equations, the authors use the Galerkin finite element method to solve them numerically. Geometric parameters affect heating efficiency; thus, the authors use flow metrics such as the Reynold number Re, magnetic parameter M, volume fraction coefficient, heat absorption and Eckert number Ec. The authors use the finite volume method to solve the governing equations after converting them to dimensionless form. The authors also try the artificial neural network method to predict the innovative cavity’s heat response in future scenarios. Transition state charts, regression analysis, MSE and error histograms accelerate, smooth and accurately converge solutions.
Findings
As the magnetic parameter and Eckert number increase, the enclosure emits more heat. As Reynold and volume fraction coefficients rise, the Nusselt number falls. It rose as magnetic, Eckert and heat absorption characteristics increased. The average Nusselt number rises with Reynolds and volume fraction coefficients. The magnetic, Eckert and heat absorption characteristics have inverse values.
Originality/value
This study numerically investigates heat transport in a trapezoidal cavity using hybrid nanoparticles (Ag-$Al_2O_3$). Unlike previous studies, this one covers MHD, joule heating with viscous dissipation, heat absorption and generation. The left and right sides of the chasm are frigid. The upper wall heats, whereas the bottom wall remains adiabatic.
Keywords
Acknowledgements
Author contributions: conceptualisation, A.T., S.U.H., M.B.A.; Methodology, A.T., S.U.H., M.B.A., M.U.A, R.N.; Software, A.T.; Validation, S.U.H., M.B.A., R.N.; writing-original draft preparation, A.T.; writing-review and editing, M.B.A, M.U.A., R.N.; Supervision, M.B.A. All authors have reviewed and contributed equally to the manuscript.
Disclosure statement: no conflict is reported by the author(s).
Citation
Tanveer, A., Ul Haq, S., Ashraf, M.B., Ashraf, M.U. and Nawaz, R. (2024), "Optimisation of MHD flow within trapezoidal cavity containing hybrid nanofluid by artificial neural network", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/HFF-01-2024-0058
Publisher
:Emerald Publishing Limited
Copyright © 2024, Emerald Publishing Limited