An evaluation of quasi-Newton methods for application to FSI problems involving free surface flow and solid body contact

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dc.contributor.author Bogaers, Alfred Edward Jules
dc.contributor.author Kok, Schalk
dc.contributor.author Reddy, B. Dayanand, 1953-
dc.contributor.author Franz, Thierry
dc.date.accessioned 2016-09-21T06:41:41Z
dc.date.issued 2016-09
dc.description.abstract The design of coupling algorithms for partitioned fluid-structure interaction (FSI) simulations are typically validated on FSI problems involving large deformations of thin elastic structures with large added mass ratios. A large number of FSI problems may however feature additional internal non-linearities, examples of which include problems with free surface ow or FSI problems involving contact between two or more solid bodies. In this paper we aim to demonstrate the applicability of quasi-Newton methods when applied to these classes of problems. The analyses will focus on a comparison between two promising families of quasi-Newton methods, namely the 'quasi-Newton least squares' (QN-LS) family of methods and the 'multi-vector iteratively updated quasi-Newton' (MVQN) method. Both of these families of quasi-Newton methods construct approximations of the FSI system Jacobians using only iteratively obtained interface information, and can therefore be applied to black-box subdomain solvers. We will further attempt to quantify the ability of these QN methods to adequately approximate these additional non-linearities based on the form of the chosen interface equations. en_ZA
dc.description.department Mechanical and Aeronautical Engineering en_ZA
dc.description.embargo 2017-09-30
dc.description.librarian hb2016 en_ZA
dc.description.uri http://www.elsevier.com/locate/compstruc en_ZA
dc.identifier.citation Bogaers, AEJ, Kok, S, Reddy, BD & Franz, T 2016, 'An evaluation of quasi-Newton methods for application to FSI problems involving free surface flow and solid body contact', Computers and Structures, vol. 173, pp. 71-83 en_ZA
dc.identifier.issn 0045-7949
dc.identifier.other 10.1016/j.compstruc.2016.05.018
dc.identifier.uri http://hdl.handle.net/2263/56768
dc.language.iso en en_ZA
dc.publisher Elsevier en_ZA
dc.rights © 2016 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Computers and Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Computers and Structures, vol. 173, pp. 71-83, 2016. doi : 10.1016/j.compstruc.2016.05.018. en_ZA
dc.subject Quasi-Newton methods en_ZA
dc.subject Partitioned FSI en_ZA
dc.subject Free surface flow en_ZA
dc.subject Solid body contact en_ZA
dc.subject Fluid-structure interaction (FSI) en_ZA
dc.subject Quasi-Newton least squares (QN-LS) en_ZA
dc.title An evaluation of quasi-Newton methods for application to FSI problems involving free surface flow and solid body contact en_ZA
dc.type Postprint Article en_ZA


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