Immersed particle method for fluid–structure interaction

TLDR

The paper presents a method for fluid–structure interaction of fracturing structures under impulsive loads, targeting high‑pressure, low‑velocity fluid problems and demonstrated on three cylindrical shell fracture simulations. The method employs meshfree techniques, modeling the structure with Kirchhoff–Love shell theory and cracks via discrete or continuous discontinuities, and couples fluid and structure through a master–slave scheme with the structure as slave. The coupling is simple, remains effective after structural failure, and permits fluid flow through crack openings. © 2009 John Wiley & Sons, Ltd.

Abstract

Abstract A method for treating fluid–structure interaction of fracturing structures under impulsive loads is described. The coupling method is simple and does not require any modifications when the structure fails and allows fluid to flow through openings between crack surfaces. Both the fluid and the structure are treated by meshfree methods. For the structure, a Kirchhoff–Love shell theory is adopted and the cracks are treated by introducing either discrete (cracking particle method) or continuous (partition of unity‐based method) discontinuities into the approximation. Coupling is realized by a master–slave scheme where the structure is slave to the fluid. The method is aimed at problems with high‐pressure and low‐velocity fluids, and is illustrated by the simulation of three problems involving fracturing cylindrical shells coupled with fluids. Copyright © 2009 John Wiley & Sons, Ltd.