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Application of the Hot Wire Technique and COMSOL Multiphysics for Heat Transfer Monitoring in Solids

J. Hernandez1 V. Suarez1 J.A. Calderon1 E. Marin1 B. Rojas1 A.G. Juarez1 J. Guarachi1
1Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Unidad Legaria del Instituto Politécnico Nacional, Mexico, Distrito Federal, Mexico

Temperature vs. time at different radial distances.

We applied the Hot Wire (HW) technique and COMSOL Multiphysics software to study the heat transfer of a homogeneous and isotropic solid material. The HW technique is based on the application of a linear power density modulated by a rectangular pulse of heat, in a specific time period. The power density is applied over the symmetry axis of the sample to produce a radial heat flux and investigate the thermal response of the sample. In this work, the solutions of the transient heat transport equation by means of the finite element technique with appropriate boundary conditions are reported and compared with the conventional theoretical model.

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