Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Bragg Mirrors for Thermal Waves

Version 1 : Received: 9 October 2021 / Approved: 12 October 2021 / Online: 12 October 2021 (10:21:55 CEST)

A peer-reviewed article of this Preprint also exists.

Camacho de la Rosa, A.; Becerril, D.; Gómez-Farfán, M.G.; Esquivel-Sirvent, R. Bragg Mirrors for Thermal Waves. Energies 2021, 14, 7452. Camacho de la Rosa, A.; Becerril, D.; Gómez-Farfán, M.G.; Esquivel-Sirvent, R. Bragg Mirrors for Thermal Waves. Energies 2021, 14, 7452.

Journal reference: Energies 2021, 14, 7452
DOI: 10.3390/en14227452

Abstract

We present a numerical calculation of the heat transport in a Bragg mirror configuration made of materials that do not obey Fourier's law of heat conduction. The Bragg mirror is made of materials that are described by the Cattaneo-Vernotte equation. By analyzing the Cattaneo-Vernotte equation's solutions, we define the thermal wave surface impedance to design highly reflective thermal Bragg mirrors. Even for mirrors with a few layers, very high reflectance is achieved ($>90\%$). The Bragg mirror configuration is also a system that makes evident the wave-like nature of the solution of the Cattaneo-Vernotte equation by showing frequency pass-bands that are absent if the materials obey the usual Fourier's law.

Keywords

Cattaneo-Vernotte; waves; Bragg

Subject

MATERIALS SCIENCE, General Materials Science

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.

We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.