Premium
Studies of the strong coupling and weak coupling methods in FSI analysis
Author(s) -
Zhang Qun,
Hisada Toshiaki
Publication year - 2004
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1034
Subject(s) - coupling (piping) , convergence (economics) , matrix (chemical analysis) , numerical analysis , weak convergence , physics , computer science , mathematics , materials science , mathematical analysis , computer security , economics , metallurgy , composite material , asset (computer security) , economic growth
The weak coupling methods in fluid–structure interaction analysis are newly classified into three types; the weak coupling method for solving structures with interfaces, the weak coupling method for solving fluids with interfaces, and the weak coupling method for solving both fluids and structures with interfaces. The consistent added matrices of these weak coupling methods are derived from the condensation of the strong coupling formulation. Some approximations for the consistent added matrices, which can avoid the matrix coupling, are proposed. The reasons for convergence difficulty in the weak coupling methods are clarified. A number of numerical results are presented to investigate the convergence properties and computational efficiency of these methods. Copyright © 2004 John Wiley & Sons, Ltd.