Parameter-robust preconditioning for unsteady Stokes control problems

Parameter-robust preconditioning for unsteady Stokes control problems
复制标题

非稳态斯托克斯控制问题的参数鲁棒预处理

DOI:
10.1002/pamm.202100131
复制
发表时间:
2021
期刊:
PAMM
影响因子:
--
通讯作者:
Leveque S
Leveque S
中科院分区:
--
文献类型:
--
作者:
Leveque S

文献摘要

相似文献

我们提出了一个鞍点预条件的时间依赖的斯托克斯方程的约束下的优化问题,离散使用向后欧拉方法在时间上。关键成分是(1,1)-块的内部迭代,由热控制问题的已知预条件子加速,以及Schur补的近似,涉及应用于块矩阵的交换子自变量。数值结果表明,这种方法的有效性和鲁棒性。
We propose a saddle‐point preconditioner for an optimization problem constrained by the time‐dependent Stokes equations, discretized using the backward Euler method in time. The key ingredients are an inner iteration for the (1, 1)‐block, accelerated by a known preconditioner for the heat control problem, and an approximation of the Schur complement involving a commutator argument applied to a block matrix. Numerical results demonstrate the efficacy and robustness of this approach.