Numerical Study of Shock Wave Processes in Materials under the Influence of Ultrashort Laser Pulses Using the Baer–Nunziato Model

• Published in: Computational mathematics and mathematical physics Vol. 64; no. 9; pp. 2121 - 2130
• Main Authors: Chuprov, P. A., Fortova, S. V., Shepelev, V. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2024; Springer Nature B.V
• Subjects: Computational Mathematics and Numerical Analysis; Femtosecond pulsed lasers; Femtosecond pulses; Mathematical Physics; Mathematics; Mathematics and Statistics; Multiphase; metals; hydrodynamics; femtosecond laser emission
• ISSN: 0965-5425; 1555-6662
• DOI: 10.1134/S0965542524701094

A mathematical model based on the multiphase Baer–Nunziato model is presented. The effectiveness of this model is demonstrated by numerically solving shock wave problems in condensed matter in the presence of an explicit contact boundary with vacuum. The results of numerical simulation of problems of the interaction of femtosecond laser radiation with an aluminum target are considered. The advantage of using the Baer-Nunziato model compared to a single-phase hydrodynamic model when calculating the dynamics of the contact boundary is demonstrated. The ease of implementation and the ability to easily introduce additional submodels, such as combustion, make this approach attractive for modeling high-energy processes in multiphase media.