Abstract
A numerical approach is used to investigate waves propagation due to laser radiation. A thin layer of gas medium is considered, and gas is modeled based on ideal gas concept. The aim of the research is to examine time relaxation constant’s influence on the coupled thermoelastic system. Heat flux relaxation according to Maxwell–Cattaneo law is studied. The spatial description is used in order to describe continuum fields. Density, temperature, heat flux and velocity are evaluated through the system of balance equations: mass, energy and momentum balances are taken in integral form. The high-speed thermal impact is modeled by defining the distribution of heat sources in the volume for the semitransparent medium with help of Bouguer law. The power of the laser pulse depends on time as the Dirac delta function or as the Heaviside function do. A number of problems with different time relaxation constant are considered, and the interaction between thermal and acoustic waves is examined. For numerical calculation, an explicit technique is applied.
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