A Weighted State Redistribution Algorithm for Embedded Boundary Grids
State redistribution is an algorithm that stabilizes cut cells for embedded boundary grid methods. This work extends the earlier algorithm in several important ways. First, state redistribution is extended to three spatial dimensions. Second, we discuss several algorithmic changes and improvements motivated by the more complicated cut cell geometries that can occur in higher dimensions. In particular, we introduce a weighted version with less dissipation in an easily generalizable framework. Third, we demonstrate that state redistribution can also stabilize a solution update that includes both advective and diffusive contributions. The stabilization algorithm is shown to be effective for incompressible as well as compressible reacting flows. Finally, we discuss the implementation of the algorithm for several exascale-ready simulation codes based on AMReX, demonstrating ease of use in combination with domain decomposition, hybrid parallelism and complex physics.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA); Exascale Computing Project (ECP)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1885982
- Report Number(s):
- NREL/JA-2C00-83930; MainId:84703; UUID:6e9b2edd-4da2-440b-9463-2324477eaef4; MainAdminID:65393
- Journal Information:
- Journal of Computational Physics, Journal Name: Journal of Computational Physics Vol. 464
- Country of Publication:
- United States
- Language:
- English
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