The generalized optimised Schwarz method proposed in [Claeys & Parolin, 2022] is a variant of the Despr\'es algorithm for solving harmonic wave problems where transmission conditions are enforced by means of a non-local exchange operator. We introduce and analyse an acceleration technique that significantly reduces the cost of applying this exchange operator without deteriorating the precision and convergence speed of the overall domain decomposition algorithm.

翻译：[Claeys & Parolin, 2022]提出的广义优化Schwarz方法是解决谐波波动问题的Després算法变体，其通过非局部交换算子强制执行传输条件。我们提出并分析了一种加速技术，该技术能在不降低整体区域分解算法精度与收敛速度的前提下，显著降低该交换算子的应用成本。