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arXiv · 2509.08103

An Improved Robin-Robin Coupling Method for Parabolic-Parabolic Interface Problems

Erik Burman·Miguel A. Fernandez·Johnny Guzman·Sijing Liu
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Abstract

We consider a loosely coupled, non-iterative Robin-Robin coupling method proposed and analyzed in [Numer. Algorithms, 99:921-948, 2025] for a parabolic-parabolic interface problem. We modify the first step of the scheme so that several error difference quantities remain higher order convergence without requiring additional assumptions. Numerical results are presented to support our findings.

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Erik Burman, Miguel A. Fernandez, Johnny Guzman, Sijing Liu. 2025-09-09. An Improved Robin-Robin Coupling Method for Parabolic-Parabolic Interface Problems. https://arxiv.org/abs/2509.08103

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