Time-parallel algorithm for two phase flows simulation
| Autor: | Katia Ait-Ameur, Marc Tajchman, Yvon Maday |
|---|---|
| Přispěvatelé: | Laboratoire Jacques-Louis Lions (LJLL (UMR_7598)), Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Ait-Ameur, Katia |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Finite volume method
Discretization Computer science 010102 general mathematics Parallel algorithm Parareal Domain decomposition methods 010103 numerical & computational mathematics [MATH] Mathematics [math] [MATH.MATH-NA] Mathematics [math]/Numerical Analysis [math.NA] Grid 01 natural sciences Mathematics::Numerical Analysis Code (cryptography) Applied mathematics 0101 mathematics [MATH]Mathematics [math] [MATH.MATH-NA]Mathematics [math]/Numerical Analysis [math.NA] Complement (set theory) |
| Zdroj: | Numerical Simulation in Physics and Engineering: Trends and Applications ISBN: 9783030625429 |
| Popis: | In this paper, we will report our recent effort to apply the parareal algorithm to the time parallelization of an industrial code that simulates two phase flows in a reactor for safety studies. This software solves the six equation two-fluid model by considering a set of balance laws (mass, momentum and energy) for each phase, liquid and vapor, of the fluid. The discretization is based on a finite volume method on a staggered grid in space and on a multistep time scheme. Here, we apply a variant of the parareal algorithm on an oscillating manometer test case: the multi-step variant allowing to deal with multistep time schemes in the coarse and/or fine propagators. Numerical results show that parareal methods offer the potential for an increased level of parallelism and is a good strategy to complement the current space domain decomposition implemented in the code. |
| Databáze: | OpenAIRE |
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