TY  - EJOU
AU  - Mackolil, Joby 
AU  - Basavarajappa, Mahanthesh 
AU  - Lorenzini, Giulio 

TI  - Thermodynamic Analysis of Marangoni Convection in Magnetized Nanofluid
T2  - Frontiers in Heat and Mass Transfer

PY  - 2025
VL  - 23
IS  - 2
SN  - 2151-8629

AB  - 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 Ralston’s 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 modeled fluid flow scenario is often seen in drying, coating, and heat exchange processes, especially in microgravity environments.
KW  - Nanofluid; marangoni convection; entropy generation; ralston’s algorithm; nusselt number; response surface methodology

DO  - 10.32604/fhmt.2025.058702