About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Dynamic Behavior of Materials IX
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Presentation Title |
3D Hydrodynamics Computations of High-areal Mass Ejecta Production from Shallow Bubble Collapse Mechanism |
Author(s) |
Fady Najjar, Garry Maskaly, Gerald Stevens, W. Dale Turley, Brandon LaLone, Matthew Staska, Ruben Valencia, David A Brantley |
On-Site Speaker (Planned) |
David A Brantley |
Abstract Scope |
While extensive research of ejecta physics has been performed on Richtmyer-Meshkov Instability (RMI) production, recent experiments have demonstrated that, under certain conditions, Shallow Bubble Collapse (SBC) mechanism can produce substantial areal masses (>300 mg/cm2) at elevated temperatures (~2500K). Detailed 3D computations are performed using LLNL’s hydrodynamics code to understand the ejecta production and its evolution as activated by SBC. We will validate our computational analysis to recent experimental series campaign performed at STL for various metal samples. Our current experiments have explored the range of SBC activation, showing evidence of rapid vaporization of the ejected material. Experiments have shown that the SBC mechanism is agnostic to initial surface finish. This talk will provide highlights of our computational SBC effort.
LLNL-ABS-823964. 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 |
Modeling and Simulation, Phase Transformations, |