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arXiv · 2601.02847

Stability and error estimates of a linear and partitioned finite element method approximating nonlinear fluid-structure interactions

Bangwei She·Tian Tian·Karel Tuma
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Abstract

We propose and analyze a linear and partitioned finite element method for fluid-shell interactions under the arbitrary Lagrangian-Eulerian (ALE) framework. We adopt the P1-bubble/P1/P1 elements for the fluid velocity, pressure, and structure velocity, respectively. We show the stability and error estimates of the scheme without assuming infinitesimal structural deformation nor neglecting fluid convection effects. The theoretical convergence rate is further corroborated by numerical experiments.

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Bangwei She, Tian Tian, Karel Tuma. 2026-01-06. Stability and error estimates of a linear and partitioned finite element method approximating nonlinear fluid-structure interactions. https://arxiv.org/abs/2601.02847

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