Study of Thermal Rectification in a Bi-Material with Interfacial Inhomogeneities

Authors

DOI:

https://doi.org/10.47451/phy2025-07-01

Keywords:

bi-material, interfacial inhomogeneities, thermal conductivity, thermal rectification

Abstract

Thermal rectification is a phenomenon of heat exchange that allows heat to be transferred in one direction to a lesser extent than in the other. The study of this process enables the control of temperature, energy conversion, and the creation of potentially new materials. Studies of the thermal rectification effect using nanofiber compounds are known in the literature, in which the heat flow causes different heat transfer in both directions by changing the operating temperature, and thus, in one direction, the connected structure plays the role of a dielectric, in the other — a conductor. In this article, the phenomenon of thermal rectification is studied based on a model of thermos-elastic behaviour of a bi-material with interfacial inhomogeneities. It is assumed that the interfacial inhomogeneities are filled with some substance and are characterised by a given thermal conductivity coefficient. It is demonstrated that inhomogeneities along the interfacial line of the bi-material result in varying heat transfer depending on the direction of the heat flow and the properties of the bi-material components. The phenomenon of thermal rectification for such a model consists in increasing the difference between the values of effective thermal resistance for two opposite directions of heat flow. It has been established that the lower the thermal conductivity of the inhomogeneities and the greater the density of their location, the more pronounced the phenomenon of thermal rectification becomes.

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Author Biography

  • Khrystyna Serednytska, Pidstryhach Institute for Applied Problems of Mechanics and Mathematics, National Academy of Sciences of Ukraine

    Candidate of Physical and Mathematical Sciences (Ph.D.), Head of the Laboratory

References

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Published

2025-09-30

How to Cite

Study of Thermal Rectification in a Bi-Material with Interfacial Inhomogeneities. (2025). European Scientific E-Journal, 38, 68–76. https://doi.org/10.47451/phy2025-07-01

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