A simple field function for solving complex and dynamic fluid-solid system on Cartesian grid
Abstract
In this paper, a simple field function is presented for facilitating the solution of complex and dynamic fluid-solid systems on Cartesian grids with interface-resolved fluid-fluid, fluid-solid, and solid-solid interactions. For a Cartesian-grid-discretized computational domain segmented by a set of solid bodies, this field function explicitly tracks each subdomain with multiple resolved interfacial node layers. As a result, the presented field function enables low-memory-cost multidomain node mapping, efficient node remapping, fast collision detection, and expedient surface force integration. Implementation algorithms for the field function and its described functionalities are also presented. Equipped with a deterministic multibody collision model, numerical experiments involving fluid-solid systems with flow conditions ranging from subsonic to supersonic states are conducted to validate and illustrate the applicability of the proposed field function.
Keywords
Cite
@article{arxiv.1702.02474,
title = {A simple field function for solving complex and dynamic fluid-solid system on Cartesian grid},
author = {Huangrui Mo and Fue-Sang Lien and Fan Zhang and Duane S. Cronin},
journal= {arXiv preprint arXiv:1702.02474},
year = {2018}
}