Solution of Moore–Gibson–Thompson Equation of an Unbounded Medium with a Cylindrical Hole

Ahmed E. Abouelregal, Hakan Ersoy and Ömer Civalek
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Ahmed E. Abouelregal: Department of Mathematics, College of Science and Arts, Jouf University, Al-Qurayyat 75911, Saudi Arabia
Hakan Ersoy: Division of Mechanics, Department of Mechanical Engineering, Akdeniz University, Antalya 07058, Turkey
Ömer Civalek: Division of Mechanics, Department of Civil Engineering, Akdeniz University, Antalya 07058, Turkey

Mathematics, 2021, vol. 9, issue 13, 1-21

Abstract: In the current article, in the presence of thermal and diffusion processes, the equations governing elastic materials through thermodiffusion are obtained. The Moore–Gibson–Thompson (MGT) equation modifies and defines the equations for thermal conduction and mass diffusion that occur in solids. This modification is based on adding heat and diffusion relaxation times in the Green–Naghdi Type III (GN-III) models. In an unbounded medium with a cylindrical hole, the built model has been applied to examine the influence of the coupling between temperature and mass diffusion and responses. At constant concentration as well as intermittent and decaying varying heat, the surrounding cavity surface is traction-free and is filled slowly. Laplace transform and Laplace inversion techniques are applied to obtain the solutions of the studied field variables. In order to explore thermal diffusion analysis and find closed solutions, a suitable numerical approximation technique has been used. Comparisons are made between the results obtained with the results of the corresponding previous models. Additionally, to explain and realize the presented model, tables and figures for various physical fields are presented.

Keywords: solution of thermoelastic diffusion; MGT equation; thermal and diffusion relaxation time; cylindrical hole (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2021
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