Low-density plasma effects on pulsed power driver target coupling
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Woolstrum, Jeffrey Michael↗
Engineering topics
Bova, Steven W.
Publications and source records attributed to Bova, Steven W..
FLEXO: A Portably Performant Code for Pulsed Power Target Physics
FLEXO (Flux-Limited Extended-MHD Ohm's Law) is a production-line multiphysics code developed at Sandia to enable more predictive modeling of target physics on pulsed-power devices. FLEXO uses an extended magnetohydrodynamics (XMHD) model which includes a generalized Ohm's law (GOL), an electron inertia term, and Hall physics. This report describes the code's numerical methods, its computational performance, and test problems of interest.
42 ENGINEERING↗
Recent Capability Development in FLEXO
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Stagg, Alan K.↗
Extended MHD Effects on Current Delivery Explored Using FLEXO
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Woolstrum, Jeffrey Michael↗
ALEGRA: Finite element modeling for shock hydrodynamics and multiphysics
ALEGRA is a multiphysics finite-element shock hydrodynamics code, under development at Sandia National Laboratories since 1990. Fully coupled multiphysics capabilities include transient magnetics, magnetohydrodynamics, electromechanics, and radiation transport. Importantly, ALEGRA is used to study hypervelocity impact, pulsed power devices, and radiation effects. The breadth of physics represented in ALEGRA is outlined here, along with simulated results for a selected hypervelocity impact experiment.
42 ENGINEERING↗
FLEXO: Next Generation Capabilities for Pulsed Power Experimental Design
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Beckwith, Kristian↗
Solid Rocket Motor Design using a Low-Dimensional Fluid Model
This document is a summary of the mathematical models that are used in the DARPA TRADES project for the solid rocket motor design challenge. It is hoped that this brief description of these models will be of use to those that are working on the project.
42 ENGINEERING↗
STPR 04 Milestone 6 Report.
This report documents the completion of milestone STPRO4-6 Kokkos Support for ASC applications and libraries. The team provided consultation and support for numerous ASC code projects including Sandias SPARC, EMPIRE, Aria, GEMMA, Alexa, Trilinos, LAMMPS and nimbleSM. Over the year more than 350 Kokkos github issues were resolved, with over 220 requiring fixes and enhancements to the code base. Resolving these requests, with many of them issued by ASC code teams, provided applications with the necessary capabilities in Kokkos to be successful.
97 MATHEMATICS AND COMPUTING↗