GPU Accelerated 3D Modeling and Simulation of a Blended Kinetic Impact and Nuclear Subsurface Explosion

Planetary defense mission concepts for disrupting/pulverizing hazardous asteroids with short warning time

“…Modeling and simulation of hypervelocity kinetic-energy impacts and nuclear explosions for deflecting or disrupting asteroids is a complex physical/computational problem, as extensively investigated in Refs. [10][11][12][35][36][37][38][39][40][41][42][43]. A simple 2D simulation model is developed in Refs.…”

“…The high-resolution visual/IR cameras provide successive images of the NEO to the terminal guidance system for a few trajectory correction maneuvers. Separation must occur between the leader spacecraft and the follower spacecraft before the leading kinetic-energy impactor Because the hypervelocity kinetic impact and nuclear subsurface explosion simulations rely heavily on energy transmission through shocks, the early research work conducted for the HAIV mission concept study [11,12] used adaptive smoothed particle hydrodynamics (ASPH) to mitigate some of the computational and fidelity issues that arise in more complex, highfidelity hydrocode simulations. The propagation of the nuclear explosive shock can be seen for an illustrative benchmark test case shown in Fig.…”

“…An improved ASPH code, implemented on a modern low-cost GPU desktop computer, has been developed for the HAIV mission study [11,12].…”

“…Responsiveness is important because one of the primary objectives of the HAIV design is to [11,12]. Reproduced with permission from Ref.…”

A GPU-accelerated high-order multiphase computational tool for asteroid fragmentation and pulverization modeling

“…The Hypervelocity Asteroid Intercept Vehicle (HAIV) concept was developed as part of a NASA Innovative Advanced Concepts (NIAC) study [67,68,69,70]. The HAIV concept blends a hypervelocity impactor and a NED together.…”