Numerical simulation of planar multiple shock interactions on the National Ignition Facility
Abstract
A numerical design study was performed to explore the parameter space of multiple co-propagating planar shock interactions in a laser-driven shock-tube on the National Ignition Facility (NIF). The experiment geometry is unique in that it is capable of producing a wide range of multiple co- or counter-propagating shock / material interface interactions in a planar geometry with interfacial perturbations at a diagnosable scale. Integrated hohlraum / shock-tube package simulations were performed using both HYDRA and xRAGE, and comparison between the two shows good agreement on the trajectory of unstable interfaces. Comparisons are made with both experimental data and previous simulations from this platform. The parameter space of possible shock interactions is very rich and allows for the study of multi-shock instability growth from the incompressible limit to strongly compressible conditions.
This work conducted under the auspices of the U.S. DOE by LANL under contract 89233218CNA000001.- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- 2020
- Bibcode:
- 2020APS..DPPC04014R