An interface preserving and residual-based adaptivity for phase-field modeling of fully Eulerian fluid-structure interaction

Biswajeet Rath, Xiaoyu Mao, Rajeev K. Jaiman

Abstract: Highlights•Novel interface preserving adaptivity on unstructured grid for fully Eulerian FSI.•Early stopping criterion based on interface thickness and mesh resolution.•New characteristic length scale by weighted harmonic mean of bulk and interface resolutions.•Significant improvements in conservation properties with proposed adaptivity.•Demonstration of FSI contact dynamics via bouncing elastic ball problem.