Flash-X, a multiphysics simulation software instrument
08/24/2022 
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by Anshu Dubey, et al. ∙
Google
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The University of Alabama
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NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
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University of California Santa Cruz
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RIKEN
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University of Illinois at Urbana-Champaign
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The University of Chicago
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Argonne National Laboratory
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Oak Ridge National Laboratory
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Apple Inc
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Michigan State University
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Berkeley Lab
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The University of Tennessee, Knoxville
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Flash-X is a highly composable multiphysics software system that can be used to simulate physical phenomena in several scientific domains. It derives some of its solvers from FLASH, which was first released in 2000. Flash-X has a new framework that relies on abstractions and asynchronous communications for performance portability across a range of increasingly heterogeneous hardware platforms. Flash-X is meant primarily for solving Eulerian formulations of applications with compressible and/or incompressible reactive flows. It also has a built-in, versatile Lagrangian framework that can be used in many different ways, including implementing tracers, particle-in-cell simulations, and immersed boundary methods.
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