Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
Analysis via Generalized Integral Transform Technique for Temperature Distribution and Efficiency of Extended Surfaces with Variable Thermal Conductivity
Submission Author:
Ítalo Amaral , RJ , Brazil
Co-Authors:
Raul Queiroz, Diego Knupp, José Luiz Zanon Zotin, Marcos Curi
Presenter: Raul Queiroz
doi://10.26678/ABCM.COBEM2019.COB2019-2189
Abstract
The present paper uses the Generalized Integral Transform Technique (GITT), a hybrid method that combines the principles of analytic and numeric solutions for partial differential equations resultant of the analysis of transient heat transfer problems A steady state problem of heat transfer from longitudinal extended surfaces with uni-dimensional formulation and variable thermal conductivity is studied, the boundary conditions are temperature constant at the base and adiabatic tip. Resulting in a non-linear partial differential equations (PDE) system, suitable for advanced mathematical tools, such as integral transformation technique in order to solve the PDE’s and determine the temperature field and then its efficiency from the heat transfer from the fin. With the analysis of non-dimensional parameters, the importance of the form factor and the thermo-geometric coefficient on the temperature field and efficiency can be observed, and the impact of this non-linear formulation causes in all analysis. Then, multiple values for these parameters is necessary to understand what happens within a fin.
Keywords
Heat transfer, extended surfaces, integral transform technique, GITT, Temperature-dependent property, non-linear problem
