Sandia National Labs FY20 LDRD Annual Report

FY20 ANNUAL REPORT

MISSION IMPACT: CTH is one of the most highly used computational structural mechanics codes on DoD high-performance computing platforms, as well as the number one code at Sandia in terms of computing hours. CTH has been used to mimic the entry process of the Chelyabinsk asteroid in Russia, simulate the penetration (a first-of-its- kind simulation), breakup and fireball of Comet Shoemaker- Levy 9 hitting Jupiter, and aid in the accident investigations of the Space Shuttle Columbia disaster and the USS Iowa naval training accident. The CTH code is currently being used to design and improve high- velocity and high-temperature national security applications that ultimately provide security to the country.

This 3D simulation of the Chelyabinsk meteor explosion by Mark Boslough was rendered by Brad Carvey using the CTH code on Sandia’s Red Sky supercomputer. Andrea Carvey composited the wireframe tail.

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LABORATORY DIRECTED RESEARCH & DEVELOPMENT