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A generalized heat conduction model of higher order time derivatives and three phase lags for non simple thermoelastic materials

Author name : Adam Zakria Adam Sidig
Publication Date : 2020-08-07
Journal Name : www.nature.com/scientificreports

Abstract

In the current work, a new generalized model of heat conduction has been constructed taking into
account the influence of the microscopic structure into the on non-simple thermoelastic materials. The
new model was established on the basis of the system of equations that includes three‑phase lags of
higher-order and two different temperatures, namely thermodynamic and conductive temperature.
The two-temperature thermoelastic model presented by Chen and Gurtin (Z Angew Math Phys
19(4):614–627, 1968) and some other previous models have been introduced as special cases from
the proposed model. As an application of the new model, we studied the thermoelastic interactions
resulting from sudden heating in an isotropic solid subjected to external body force. The influence
of the discrepancy parameter and higher‑order of the time‑derivative has been discussed. this work
will enable future investigators to gain insight into non-simple thermoelasticity with different phase
delays of higher‑order in detail.

Keywords

derivatives, three‑phase‑lags, thermoelastic, materials

Publication Link

https://doi.org/10.1038/s41598-020-70388-1

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