Simulação do processo de transmissão de calor em uma placa, com condutividade térmica dependente da temperatura, aquecida por uma fonte externa de radiação

• Autor(a) principal: Lira, Allan Moraes de
• Data de Publicação: 2016
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/11733
• topic: Mechanical engineering; Heat Transference; Radiation; Variable Thermal Conductivity; Kirchhoff Transformation; Engenharia mecânica; Transferência de Calor; Radiação; Condutividade térmica variável; Transformada de Kirchhoff; CNPQ::ENGENHARIAS::ENGENHARIA MECANICA

This study aims to approach the energy transference by heat means through a realist perspective in relation to the materials thermal conductivity. The thermal conductivity is not considered steadfast in this research. The admitted idea in this text is a dependency between thermal conductivity and temperature. Thus, the following approach is done: the thermal conductivity is a function constant through parts (three "steps") of temperature. The Kirchhoff Transformation is introduced to be applied to deal with the problem nonlinearity, considering that, when dealing with variable thermal conductivity, the problem will be conducted by a nonlinear differential equation. The aim of the study of this work consists in the heat transmission in a rectangular thin board that is exposed to a thermal radiation source. Lastly, the board temperature fields results are shown with their analysis.