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DOE OSTI · 1819126

Radiation Hydrodynamics in the Lagrangian Application Project’s LUMOS code

Thompson, Kelly Glen·Wollaeger, Ryan Thomas·Budge, Kent Grimmett
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Abstract

Starting in 2019, the Lagrangian Applications Project (LAP) and the Transport Project set out to develop a new ALE/Lagrangian radiation-hydrodynamics (RH) capability in a new code product named LUMOS. This work was done under the guidance of the Advanced Simulation and Computing (ASC) program with the goal of producing software capable of leveraging the high-order thermal radiative transfer (TRT) solvers provided by the Jayenne and Capsaicin software projects. This capability supplements the existing gray diffusion solver that is currently available in LAP’s FLAG code [1, 2, 3] for RH. The remainder of this memo describes the coupling of the radiation and hydrodynamics solvers within LAP’s LUMOS code. Initially delivered in 2020 as part of an L2 milestone [4], this capability continues to mature in FY21 with more efficient and robust algorithms, new support for ALE, and support for mixed materials per cell. Today, LUMOS is provided as a standard end-user product in the suite of LAP tools provided in each release cycle. Code access can be requested at https://asc.lanl.gov.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS97 MATHEMATICS AND COMPUTINGRadiation hydrodynamics

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Thompson, Kelly Glen, Wollaeger, Ryan Thomas, Budge, Kent Grimmett. 2021-07-12. Radiation Hydrodynamics in the Lagrangian Application Project’s LUMOS code. https://doi.org/10.2172/1819126

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