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
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Leveque S
中科院分区:
文献类型:
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作者:
Leveque S
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.