混合不连续伽辽金方法用于耦合斯托克斯-达西系统的预条件处理
Preconditioning of a hybridizable discontinuous Galerkin method for the coupled Stokes--Darcy system
中文总结 AI 辅助
本文提出了一种参数鲁棒的预条件器，用于处理耦合斯托克斯-达西系统混合不连续伽辽金离散化后的静力简化线性系统，通过操作预条件框架证明了方案的统一良好性，并展示了预条件器的鲁棒性。
中文摘要 AI 辅助
本文提出了一种参数鲁棒的预条件器，用于处理耦合斯托克斯-达西系统混合不连续伽辽金离散化后的静力简化线性系统，通过操作预条件框架证明了方案的统一良好性，并展示了预条件器的鲁棒性。
英文摘要
We propose parameter-robust preconditioners for the statically condensed linear system arising from a hybridizable discontinuous Galerkin discretization of the coupled Stokes--Darcy system. The design strategy relies on first applying the operator-preconditioning framework [Numer. Linear Algebra Appl., 18(1):1--40, 2011] to construct a preconditioner for the non-condensed discretization. This is done by proving uniform well-posedness of the scheme. Next, we prove robustness of the resulting condensed preconditioner applied to the reduced linear system using the framework we proposed in [SIAM J. Sci. Comput., 47(6):A3212--A3238, 2025]. Numerical examples demonstrate robustness of the proposed preconditioners.
