Decoupling Methods for Fluid-Structure Interaction with Local Time-Stepping
Year: 2025
Author: Hemanta Kunwar, Hyesuk Lee
International Journal of Numerical Analysis and Modeling, Vol. 22 (2025), Iss. 1 : pp. 71–95
Abstract
We introduce two global-in-time domain decomposition methods, namely the Steklov-Poincare method and the Robin method, for solving a fluid-structure interaction system. These methods allow us to formulate the coupled system as a space-time interface problem and apply iterative algorithms directly to the evolutionary problem. Each time-dependent subdomain problem is solved independently, which enables the use of different time discretization schemes and time step sizes in the subsystems. This leads to an efficient way of simulating time-dependent phenomena. We present numerical tests for both non-physical and physical problems, with various mesh sizes and time step sizes to demonstrate the accuracy and efficiency of the proposed methods.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/ijnam2025-1004
International Journal of Numerical Analysis and Modeling, Vol. 22 (2025), Iss. 1 : pp. 71–95
Published online: 2025-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 25
Keywords: Fluid-structure interaction domain decomposition local time stepping.
Author Details
Hemanta Kunwar Email
Hyesuk Lee Email