Thermodynamic Analysis of Marangoni Convection in Magnetized Nanofluid

Title

Thermodynamic Analysis of Marangoni Convection in Magnetized Nanofluid

Creator

Mackolil, Joby; Basavarajappa, Mahanthesh; Lorenzini, Giulio

Description

This article explores the optimization of heat transport in a magnetohydrodynamic nanofluid flow with mixed Marangoni convection by using the Response Surface Methodology. The convective flow is studied with external magnetism, radiative heat flux, and buoyancy. An internal heat absorption through the permeable surface is also taken into account. The governing system includes the continuity equation, Navier-Stokes momentum equation, and the conservation of energy equations, approximated by the Prandtl boundary layer theory. The entropy generation in the thermodynamic system is evaluated. Experimental data (Corcione models) is used to model the single-phase alumina-water nanofluid. The numerical solution for the highly nonlinear differential system is obtained via Ralstons algorithm. It is observed that the applied magnetic field leads to a higher entropy generation which is engendered by the Lorentz force within the fluid system. The thermal radiation leads to a higher Bejan number, indicating the importance of the irreversibility of heat transport. Also, the heat absorption process via a permeable surface can be employed to regulate the thermal field. An optimized Nusselt number of 13.4 is obtained at the high levels of radiation, injection, and heat sink parameters. The modelled fluid flow scenario is often seen in drying, coating,and heat exchange processes, especially in microgravity environments. 2025 The Authors.

Source

Frontiers in Heat and Mass Transfer;Volume;23;Issue;2;pp.529-551

Date

01-01-2025

Publisher

Tech Science Press

Subject

entropy generation; marangoni convection; Nanofluid; nusselt number; ralstons algorithm; response surface methodology

Coverage

Mackolil J., Centre for Mathematical Needs, Department of Mathematics, Christ University, Bengaluru, 560029, India, Postgraduate and Research Center of Mathematics, Bharata Mata College (Autonomous), Thrikkakara, 682021, India; Basavarajappa M., Centre for Mathematical Needs, Department of Mathematics, Christ University, Bengaluru, 560029, India, Department of Mathematics and Physics, Texas A&M International University, Laredo, 78041, TX, United States; Lorenzini G., Department of Industrial Systems and Technologies Engineering, University of Parma, Parma, 43124, Italy

Rights

All Open Access; Gold Open Access

Relation

ISSN: 21518629;

Format

online

Language

English

Type

Article

Identifier

https://doi.org/10.32604/fhmt.2025.058702

https://www.scopus.com/pages/publications/105007910860?origin=resultslist