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This paper aims to present a simple methodology that involves basic concepts of the numerical methods and heat transfer subjects, which can be used as supplementary school material on undergraduate teaching education. The explicit finite difference method is used to solve a problem subject to boundary conditions of second and third species in the transient regime. Because it is a simple numerical method, it involves the student ́s participation during all stages of the solution development. As an application example case, it generates the temperature field for different materials, in equilibrium. In addition, it is used an expression responsible for the increase in the time step to minimize the required number of iterations for convergence. The obtained results are in good agreement with the results generated by computer software widely used in the teaching of heat transfer. Key-words: Heat diffusion equation. Explicit finite differences method. Computing in teaching heat transfer. 1 Doutora em Engenharia Mecânica pela Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brasil e pesquisadora de Pós-Doutorado (bolsa CAPES/PNPD) no Grupo de Estudos Térmicos e Energéticos (GESTE) do Departamento de Engenharia Mecânica da UFRGS. E-mail: leticia.jenisch@gmail.com 2 Doutor em Engenharia Mecânica pela Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brasil e professor do Departamento de Engenharia Mecânica da UFRGS. E-mail: borges@ufrgs.br Artigo recebido em 18/10/2011 e aceito em 23/04/2012.

Estudo da condução de calor transiente através do método das diferenças finitas explícito