A multi-resolution SPH method for fluid-structure interactions
Abstract
In this paper, we present a multi-resolution smoothed particle hydrodynamics (SPH) method for modeling fluid-structure interaction (FSI) problems. By introducing different smoothing lengths and time steps, the spatio-temporal discretization is applied with different resolutions for fluid and structure. To ensure momentum conservation at the fluid-structure coupling, a position-based Verlet time integration scheme is introduced. Furthermore, the time-averaged velocity and acceleration of solid particles are introduced to enhance force matching in the fluid and solid equations. A set of numerical examples including several bio-mechanical problems are considered to demonstrate the efficiency, accuracy and robustness of the present method. A open-source code for all the examples is also provided.
Keywords
Cite
@article{arxiv.1911.13255,
title = {A multi-resolution SPH method for fluid-structure interactions},
author = {Chi Zhang and Massoud Rezavand and Xiangyu Hu},
journal= {arXiv preprint arXiv:1911.13255},
year = {2019}
}
Comments
37 pages, 17 figures