Aluminum equation of state validation and verification for the ALEGRA HEDP simulation code.

Determining whether an equation of state (EOS) table is vali d for a given regime requires several steps that include confirming that it obeys the thermodynami c consistency relations and that the table matches available existing experimental data. Once the EOS is analyzed, then we must ensure the simulation code can reproduce analytical results. In this report, we show analytical results of Hugoniot calcu lations and compare them with values calculated from experimental Us−UP data. Next we check that the tables are thermodynamically consistent. Then, we show analytical results of impedance m atching using one of the aluminum EOS models and compare those analytical results to data. Fin ally, ALEGRA-HEDP is used to run a pseudo 1-D shock simulation, which is compared to the an alytical model with an error of approximately 0.1%. This implies that ALEGRA-HEDP can simu late the shock Hugoniot to within the error of the EOS table when compared to the experimental d a for an ideal simulation.