Hydrocode Modeling of Oblique Impacts: The Fate of the Projectile

Details Hydrocode Modeling of Oblique Impacts: The Fate of the Projectile Hydrocode Modeling of Oblique Impacts: The Fate of the Projectile

Jan 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998lpico.957...33p&link_type=abstract

Origin of the Earth and Moon, Proceedings of the Conference held 1-3 December, 1998 in Monterey, California. LPI Contribution N

Computer Science

Angles (Geometry), Planetary Surfaces, Projectiles, Three Dimensional Models, Simulation, Asteroid Collisions, Impact, Craters, Shock Waves, Impact Velocity

Scientific paper

It is well known that impacts are normally oblique, and only in rare occasions might projectiles strike a planetary surface (near) vertically. However, the majority of modeling efforts have covered vertical impacts, relying instead on long-known evidence that the angle of impact has little effect on the shape of the final crater except for very low angles of incidence. Still, the magnitude and distribution of the shock wave, and, consequently, the thermodynamic evolution of projectile and target, are not very well known. It is generally believed that only the vertical component of the impact velocity must be used in equations that describe impact events, supported, in part, the available experimental data. Hydrocode simulations are also needed. A series of high-resolution, three-dimensional hydrocode simulations were carried out, where the only variable parameter was the angle of impact. The effect of angle of impact on melting and vaporization of the target material has already been investigated. Here we investigate the fate of the projectile.

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