Abstract
The interaction of shocks with multi-material interfaces can occur in multitude of applications, including high-speed flows with droplets, bubbles and particles, and hypervelocity impact and penetration. To simulate such complicated interfacial dynamics problems, a fixed Cartesian grid approach in conjunction with level set interface tracking is attractive. In an earlier work, a unified Riemann solver based Ghost Fluid Method (GFM) was developed to accurately resolve and represent the embedded solid and fluid object(s) in high speed compressible multiphase flows. In this work, the GFM approach is extended to simulate the effects of high velocity multi-material impact and penetration processes. The impact and penetration processes are often characterized by the propagation of elasto-plasic stress waves and associated high strain-rate deformation of the interacting materials. The GFM approach is currently being applied to resolve the interface conditions for such intense loading conditions. For performing computationally efficient and high fidelity calculations, the GFM approach is augmented with a quad-tree based local adaptive mesh refinement technique.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call