NUMERICAL STUDY OF SHOCK WAVE PROCESSES IN MATERIALS UNDER THE INFLUENCE OF ULTRASHORT LASER PULSES USING THE BAER–NUNZIATO MODEL

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Abstract

A mathematical model based on the Baer–Nunziato multiphase model is presented. The effectiveness of the model is demonstrated by the numerical solution of shock wave problems in condensed media in the presence of an explicit contact boundary with vacuum. The results of numerical simulation of problems of interaction of femtosecond laser radiation with an aluminum target are considered. The advantage of using the Baer–Nunziato model in comparison with the single-phase hydrodynamic model in calculating the dynamics of the contact boundary is shown. The simplicity of implementation and the possibility of easy introduction of additional submodels, such as ignition, makes this approach attractive for modeling high-energy processes in multiphase media.

About the authors

P. A Chuprov

Institute of Design Automation of the Russian Academy of Sciences

Email: petchu@mail.ru
Moscow, Russia

S. V Fortova

Institute of Design Automation of the Russian Academy of Sciences

Moscow, Russia

V. V Shepelev

Institute of Design Automation of the Russian Academy of Sciences

Moscow, Russia

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