Fluid-Solid Coupled Simulation of Hypervelocity Impact and Plasma Formation

In hypervelocity impact events that occur within a fluid medium, the projectile produces a hypersonic fluid flow during its flight. The violent collision between the projectile and the target leads to the emission of high-energy shock waves that disrupt the initial flow field. The high temperature (e.g., thousands of kelvin) resulting from the collision may also lead to ionization and plasma expansion in the fluid medium. Understanding the fluid dynamics and thermodynamics is important for developing a complete description of a hypervelocity impact event. Previous computational studies have been largely focused on the mechanics and material behaviors within the projectile and the target, while the surrounding fluid is often simplified as a vacuum. In this talk, we will present the development of a new, fluid-solid coupled computational model of hypervelocity impact, and the application of this model to the simulation of copper projectiles impacting on soda lime glass (slg) at velocities between 4 km/s and 8 km/s. the introduction here. All running text, including the introduction, should be right-justified, in two columns, single-spaced, and in Times New Roman size 10 font.