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DEVELOPMENT OF NEW ELEMENTS IN HEAT TRANSFER IN SOLIDS - THE THERMAL STRINGS MODEL
Keywords:
dual phase lag, heat transfer, thermal strings, non-Fourier heat conduction, system of temperature variationsDOI:
https://doi.org/10.17654/0973576325046Abstract
This study aims to calculate the final temperature distribution within a solid body and the time required for the body to reach a target (final) temperature. It examines both homogeneous and non-homogeneous solids, as well as hollow solid structures, including buildings. To analyse temperature distribution, duration of fluctuations, and energy transfer, a software application was developed specifically for this research. The results obtained from the application are compared with theoretical predictions. These theoretical calculations are based on classical heat diffusion theory as well as the thermal strings model, which is an extension of the Dual Phase Lag model. In the thermal strings model, the solid is treated as a pulsating thermal string, in which stationary thermal waves are generated.
Received: October 11, 2025
Accepted: November 21, 2025
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