About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
Experimental & Computational Development of Shallow Bubble Collapse as an Ejecta Production Mechanism |
Author(s) |
Garry Maskaly, Fady Najjar, Gerald Stevens, William D Turley, Matthew Staska, Brandon LaLone, Thomas Hartsfield |
On-Site Speaker (Planned) |
Garry Maskaly |
Abstract Scope |
Richtmyer-Meshkov Instability production has been extensively studied, but despite this, there are still experimental results that are not easily explained with RMI theory. In order to understand these physics, we began a campaign to model and validate a different ejecta source mechanism. We have identified Shallow Bubble Collapse (SBC) as an alternative production mechanism under certain drive conditions. In this work, we detail computational approaches and experimental methods used to develop an understanding of SBC. We demonstrate SBC in both tin and cerium, with some experiments showing temperatures exceeding 4000 K and areal masses exceeding 1 g/cm^2. Through computational modeling, we develop the theory of the creation of this high momentum ejecta cloud. This work demonstrates the conditions that impact SBC activation and production.
LLNL-ABS-823993. Work performed under the auspices of the U.S. DOE by Lawrence Livermore National Laboratory under contract DE-AC52-07NA27344. Lawrence Livermore National Security, LLC. |
Proceedings Inclusion? |
Planned: |
Keywords |
Computational Materials Science & Engineering, |