A comparative heat transfer analysis of rectangular fin through LTE and LTNE model
The objective of this research is to compare the thermal performance of rectangular porous fins through the Local Thermal Equilibrium and the Local Thermal Non-Equilibrium models. The thermal interactions between the solid and fluid phases are represented by two distinct energy equations in the Local Thermal Non-Equilibrium model. Whereas, heat transfer is governed by a single energy equation in the Local Thermal Equilibrium model. The governing equations describing the temperature distribution inside the fin system are developed using basic heat transfer principles. To enhance thermal conductivity and total effectiveness of heat transmission, the fluid phase of water is amalgamated with Al2O3 and TiO2 nanoparticles. The governing nonlinear ordinary differential equations are nondimensionalized, and the RungeKutta Fehlberg fourth-fifth order (RKF45) method is employed to solve these equations numerically. The accuracy and dependability of the obtained solution are confirmed by comparing it with previous findings. The influence of pertinent parameters on the thermal characteristics of the permeable fin is depicted graphically, and the rate of heat transfer is analyzed by Response surface methodology. It has been determined that, for the capturing of phase-wise thermal variations, Local Thermal Non-Equilibrium model performs better, particularly in permeable media with no heat conduction differences. The Author(s), under exclusive licence to SocietItaliana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025.
Manaswini, R.; Manjunatha, S.; Chamkha, Ali J.; Tanuja, T.N.
European Physical Journal Plus;Volume;140;Issue;8;Article No.;787;
Springer Science and Business Media Deutschland GmbH
Restricted Access; Hardcopy may be available in the library
https://doi.org/10.1140/epjp/s13360-025-06711-4 https://www.scopus.com/pages/publications/105013857452?origin=resultslist
Manaswini R., Department of Mathematics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560076, India; Manjunatha S., Department of Mathematics, CHRIST (Deemed to be University), Karnataka, Bengaluru, 560076, India; Chamkha A.J., Faculty of Engineering, Kuwait College of Science and Technology, Doha District, 35004, Kuwait; Tanuja T.N., Department of Mathematics, Amity School of Applied Sciences, Amity University, Bengaluru, 562110, India