| Volume 8, Number 3, 2018, Pages 675-689 DOI：10.11948/2018.675 |
| A regularized stiffened-gas equation of state |
| Jean-Michel Ghidaglia,Ahmed Amine Mrabet |
| Keywords:Stiffened-gas, equation of state, computational fluid dynamics, slightly compressible fluid |
| Abstract: |
| An alternative to the stiffened-gas equation of state is proposed that corrects for unphysical behavior, namely the returning of negative pressure values for densities lower than the reference density. The question of generalizing a given isentropic equation of state is first addressed. Then, a regularized stiffened-gas equation of state is derived, which is the main goal of this work. Finally, the use of the new equation of state is briefly illustrated for a classical computational fluid dynamics benchmark concerning the evaluation of liquid impact on a wall. |
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