3D hydrodynamic code SOVA for multimaterial flows, application to Shoemaker-Levy 9 Comet impact problem

A totally conservative Eulerian 3D numerical code which conserves mass, mom entum and energy both in the source and remap steps is developed. Mass, mom entum and kinetic energy are conserved simultaneously during the remapping. The use of special form of linear viscosity makes the code more tolerant t o the time step, leaving the second order of accuracy. Multimaterial flows including those contaminated by dust particles may be investigated using th is program. The performance of the code is illustrated by modeling the Shoe maker-Levy 9 impact against Jupiter. Penetration of nonuniform fragments wi th complex structure into the Jovian atmosphere is investigated. (C) 1999 E lsevier Science Ltd. All rights reserved.