Schur complement IMplicit-EXplicit formulations for discontinuous Galerkin non-hydrostatic atmospheric models
Schur complement IMplicit-EXplicit formulations for discontinuous Galerkin non-hydrostatic atmospheric models
复制标题
Schur 补充了不连续伽辽金非静水力大气模型的隐式-显式公式
DOI:
10.1016/j.jcp.2023.112361
复制
发表时间:
2023
影响因子:
4.1
通讯作者:
Giraldo, Francis X.
中科院分区:
文献类型:
--
作者:
Reddy, Sohail;Waruszewski, Maciej;de Braganca Alves, Felipe A.V.;Giraldo, Francis X.
This work presents IMplicit-EXplicit (IMEX) formulations for discontinuous Galerkin (DG) discretizations of the compressible Euler equations governing non-hydrostatic atmospheric flows. In particular, we show two different IMEX formulations that not only treat the stiffness due to the governing dynamics but also the domain discretization. We present these formulations for two different equation sets typically employed in atmospheric modeling. For both equation sets, efficient Schur complements are derived and the challenges and remedies for deriving them are discussed. The performance of these IMEX formulations of different orders are investigated on both 2D (box) and 3D (sphere) test problems and shown to achieve their theoretical rates of convergence and their efficiency with respect to both mesoscale and global applications are presented.
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DOI:
10.2140/camcos.2018.13.243
发表时间:
2018-09
影响因子:
2.1
作者:
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通讯作者:
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影响因子:
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发表时间:
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期刊:
The International Journal of High Performance Computing Applications
影响因子:
--
作者:
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通讯作者:
F. Giraldo