A New Prototype Equation-of-State Data Library

Computer Science – Sound

Scientific paper

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Scientific paper

Equation-of-State (EOS) data is a necessary requirement for the simulation of many dynamic processes, including shock wave propagation, high velocity impact, laser-matter interaction, laser medicine, x-ray deposition and planetary and stellar interior evolution. Realistic simulations require high accuracy and smoothness in the EOS. In addition, some processes require independent ionic, electronic and radiation physics. In order to meet these needs, we have implemented a new EOS data library that is platform independent, hierarchically structured and easily extensible for future development. The initial set of material properties includes total, cold, ionic and electronic pressure and energy, entropy, soundspeed, melting curve, effective charge and Rosseland and Planck mean opacities. The library contains data for pure elements as well as inorganic compounds, explosives, rocks and plastics. Future plans include implementation of hierarchic temperature and density grids for high resolution and an on-line mixing algorithm.

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