Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Analytical solution for the transient heat transfer problem with variable source term in a nuclear fuel rod
Submission Author:
Filipe Alcântara Soares , RJ
Co-Authors:
Filipe Alcântara Soares, Priscila Araujo, Francesco Scofano Neto, Rodrigo Otávio de Castro Guedes
Presenter: Filipe Alcântara Soares
doi://10.26678/ABCM.COBEM2017.COB17-0242
Abstract
This work presents a fully analytical solution for the transient conduction heat transfer with variable source term in fuel rods of nuclear reactors by employing the Classical Integral Transform Technique. In this contribution, two forms of source terms are considered: a time dependent one and a more realistic situation in which this parameter is both space and time dependent. These functions for the heat source are compared with others variable source terms found in the literature. Special attention is given to the prediction of the critical time which is the time required for the complete meltdown of the cladding material. The influence of the Biot number in the determination of the critical time is approached and it was seen that the Biot can play an important role in order to increase the critical time of the cladding. Furthermore, the developed solution showed a fast convergence rate.
Keywords
Transient Heat Transfer, Nuclear Fuel Rod, Variable Heat Source
