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Modelling of pipeline integrity taking into account the fluid–structure interaction
Author(s) -
Rachid F. B. Freitas,
Mattos H. S. Costa
Publication year - 1998
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/(sici)1097-0363(19980815)28:2<337::aid-fld724>3.0.co;2-6
Subject(s) - piping , fluid–structure interaction , operator splitting , extension (predicate logic) , pipeline (software) , mathematics , term (time) , operator (biology) , mechanics , computer science , finite element method , structural engineering , engineering , physics , mechanical engineering , quantum mechanics , programming language , biochemistry , chemistry , repressor , transcription factor , gene
Two mechanical models have been presented in this paper for structural failure prediction of piping systems conveying liquids subjected to pressure transients. One model takes into account the axial fluid–structure interaction (FSI) phenomenon between fluid and pipe motion, whereas the other refers to an extension of the well‐known waterhammer formulation. Both models are described by a system of non‐linear hyperbolic equations which are solved by using a numerical procedure based upon the operator splitting technique and Glimm's scheme. To implement Glimm's method, it is presented the solution of a 4×4 Riemann problem with discontinuous coefficients. Numerical predictions of both models are presented and compared, so that the influence of the FSI term on the failure analysis is focused on. © 1998 John Wiley & Sons, Ltd.