On thermal waves' velocity: some open questions in thermal waves' physics



Título del documento: On thermal waves' velocity: some open questions in thermal waves' physics
Revista: Revista mexicana de física E
Base de datos: PERIÓDICA
Número de sistema: 000407300
ISSN: 1870-3542
Autores: 1
1
2
Instituciones: 1Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Ciudad de México. México
2Universidad Politécnica Metropolitana de Hidalgo, Tolcayuca, Hidalgo. México
Año:
Periodo: Ene-Jun
Volumen: 62
Número: 1
Paginación: 1-4
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Analítico, descriptivo
Resumen en inglés This paper presents some considerations about the truly character of thermal waves. Starting from the comparison of typical characteristic velocities, it is shown why a limiting frequency must exists, above which the parabolic treatment of the heat transfer in presence of time varying periodical heat sources is no longer valid due to the constancy of the speed of light in vacuum. Although it is demonstrated that this frequency is much smaller than that at which the thermal wave velocity can become the speed of light, many questions remain open, such as the behavior of thermal waves at intermediary frequencies. The discussion presented here can be useful to stimulate further discussion on this theme among students, teachers and scientists dealing with heat transport under non-stationary conditions
Disciplinas: Física y astronomía
Palabras clave: Física,
Física atómica y molecular,
Física de materia condensada,
Gases,
Viscosidad,
Difusión térmica,
Conductividad térmica,
Ondas térmicas,
Transferencia de calor
Keyword: Physics and astronomy,
Atomic and molecular physics,
Condensed matter physics,
Physics,
Gases,
Viscosity,
Thermal diffusion,
Thermal conductivity,
Thermal waves,
Heat transfer
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