Dynamic local coupling for multiphase flow: A compromise between efficiency and stability
Dynamic local coupling for multiphase flow: A compromise between efficiency and stability
复制标题
多相流的动态局部耦合:效率和稳定性之间的折衷
DOI:
10.1016/j.jcp.2022.111535
复制
发表时间:
2022
影响因子:
4.1
通讯作者:
Wheeler, Mary F.
中科院分区:
文献类型:
--
作者:
Li, Hanyu;Wheeler, Mary F.
Complex models involving numerous coupled physical processes create substantial computational challenge. This paper introduces a solver algorithm that maintains a locally fully coupled system in the subdomains in which individual physical process interacts with other processes strongly. Meanwhile, the solutions in the other regions are treated in a decoupled fashion. The fully coupled regions are updated dynamically by either different timesteps or iterations. Global coupling of multiple physics generally results in systems with large number of unknowns that are computationally unfeasible. On the other hand, decoupling strategies alleviates the computational load, but results in stability issues, especially for nonlinear problems and sometimes encounters divergence during the solution process. The local coupling strategy applies error estimators to determine the strength of interaction between the physical processes in subdomains. By maintaining the system in fully coupled form within critical regions, the stability issue from the decoupling strategies is avoided while the computational load is significantly reduced as compared to a global coupling strategy.
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DOI:
10.2118/203909-ms
发表时间:
2021
期刊:
Day 1 Tue, October 26, 2021
影响因子:
--
作者:
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通讯作者:
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DOI:
10.2118/110114-ms
发表时间:
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期刊:
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影响因子:
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DOI:
10.1016/j.matcom.2016.11.007
发表时间:
2017-07
期刊:
Math. Comput. Simul.
影响因子:
--
作者:
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通讯作者:
E. Ahusborde;M. E. Ossmani
影响因子:
3.6
作者:
Hanyu Li;M. Wheeler
通讯作者:
M. Wheeler
DOI:
10.1016/j.jcp.2019.109053
发表时间:
2020
期刊:
J. Comput. Phys.
影响因子:
--
作者:
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通讯作者:
M. Wheeler