An incompressible Eulerian method for fluid-structure interaction with mixed soft and rigid solids

TL;DR

This paper introduces a versatile Eulerian simulation method for fluid-structure interactions that can handle multiple soft and rigid objects, extending previous models with a unified approach and demonstrating its effectiveness through numerical examples.

Contribution

The paper develops a general Eulerian framework using the reference map technique to simulate interactions involving both soft and rigid structures within fluids.

Findings

Successfully models multiple soft and rigid structures interacting with fluids

Extends previous Eulerian soft solver to include rigid structures

Demonstrates the method's capabilities through numerical examples

Abstract

We present a general simulation approach for incompressible fluid--structure interactions in a fully Eulerian framework using the reference map technique (RMT). The approach is suitable for modeling one or more rigid or finitely-deformable objects or soft objects with rigid components interacting with the fluid and with each other. It is also extended to control the kinematics of structures in fluids. The model is based on our previous Eulerian fluid--soft solver, and generalized to rigid structures by constraining the deformation-rate tensor in a projection framework. Several numerical examples are presented to illustrate the capability of the method.