Abstract Details
Modeling of Multi-Interface, Diverging, Hydrodynamic Experiments for the National Ignition Facility
Author: M J Grosskopf
Requested Type: Poster Only
Submitted: 2009-04-21 09:16:47
Co-authors: R.P. Drake, C.C. Kuranz, A.R. Miles, J.F. Hansen, T. Plewa, N. Hearn, D. Arnett, J.C. Wheeler
Contact Info:
University of Michigan
2455 Hayward
Ann Arbor, MI 48109
USA
Abstract Text:
The National Ignition Facility (NIF) will soon provide experiments with far more than ten times the energy than has been previously available on laser facilities. In the context of supernova-relevant high-energy-density physics, this will enable experiments in which hydrodynamic instabilities develop from multiple, coupled interfaces in a diverging explosion. This presentation discusses the design of such blast-wave-driven explosions, both spherical and aspheric, in which the relative masses of the layers are scaled to those within the star. It reports scaling simulations with CALE to model the global dynamics of such an experiment. The simulations probed the instability growth and multi-interface interactions in mass-scaled systems to assess the diagnosability and experimental value of different designs using a variety of materials. Analysis of cases using non-uniform drive across the inner radius of the target will determine whether an experiment investigating aspheric supernova is a feasible extension from the current design.
This research was sponsored by LLNL through contract LLNL B56128 and by the NNSA through DOE Research Grant DE-FG52-04NA00064.
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