Case Studies in Thermal Engineering (Sep 2025)
Entropy generation of Engine Oil-based two phase tri-hybrid nanofluid due to Riga plate: Modified Magnetic field and Cattaneo-Christov heat Perceptions
Abstract
This investigation explore the thermal properties of electromagnetics Jeffrey tri-hybrid nanofluid with entropy generation subjected to Riga plate. The tri-hybrid nanofluid model is established using three different nanoparticles: titania (TiO2), cupric oxide (CuO) and alumina (Al2O3), engine oil performing as the base fluid. While dust particles are integrated to scrutinize two-phase flow phenomena. For motivation of problem, the Cattaneo-Christov heat flux theory and modified magnetic field are the important aspect of this investigation. Similarity framework is used to renovate the partial differential equations of dynamical system into a set of nonlinear ordinary differential equations. These dynamical equations are integrated numerically using bvp4c tool in MATLAB with shooting method. The results indicated that the modified magnetic field destroys the speed of fluid but raises temperature distribution, while the Cattaneo-Christov model diminishes thermal slopes associated to usual Fourier's law. An increase in the modified magnetic field strength and temperature ratio leads to enhanced entropy generation. This investigation gives significance application for enhancing thermal management system like consumer electronics, engine cooling, aerospace, automotive, power electronics and medical devices, where diminishing entropy generation is crucial for energy productivity.
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