Post-intercept Cloud Dynamics Post-Processing Tool

Spectral Sciences, Inc., and subcontractor Corvid Technologies, Inc., propose a Cloud Dynamics Post-Processing Tool (CDPPT) that extends with high fidelity the results of first principles hydrostructural code simulations of intercepts to later times. The capability addresses two important weaknesses of hydrostructural codes, i) the inability to model slow fragment deformation dynamics due to the limited simulation time, and ii) limits in mesh resolution which introduce inaccuracies in treating the dynamics associated with the smallest debris. CDPPT processes FPC outputs with a number of innovative models. A fast-running model based on position-based dynamics techniques replicates the dynamics of deformable debris materials produced in intercepts. The problem of small, micro-debris is addressed with novel approaches to processing hydrostructural Smoothed Particle Hydrodynamics (SPH) particles, leading to a more realistic propagation of the micro-debris cloud to times of maximum radiance and beyond. Approved for Public Release 14-MDA-8047 (14 Nov 14)