Show simple item record

dc.contributor.authorNaseri, Alireza
dc.contributor.authorLehmkuhl Barba, Oriol
dc.contributor.authorGonzález Acedo, Ignacio
dc.contributor.authorOliva Llena, Asensio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Màquines i Motors Tèrmics
dc.identifier.citationNaseri, A., Lehmkuhl, O., Gonzalez, I., Oliva, A. Partitioned semi-implicit methods for simulation of biomechanical fluid-structure interaction problems. A: European Thermal-Sciences Conference. "Journal of Physics: conference series, vol. 745, 2016". Krakow: Institute of Physics (IOP), 2016.
dc.descriptionThis article is published under a CC BY licence. The Version of Record is available online at:
dc.description.abstractThis paper represents numerical simulation of fluid-structure interaction (FSI) system involving an incompressible viscous fluid and a lightweight elastic structure. We follow a semi-implicit approach in which we implicitly couple the added-mass term (pressure stress) of the fluid to the structure, while other terms are coupled explicitly. This significantly reduces the computational cost of the simulations while showing adequate stability. Several coupling schemes are tested including fixed-point method with different static and dynamic relaxation, as well as Newton-Krylov method with approximated Jacobian. Numerical tests are conducted in the context of a biomechanical problem. Results indicate that the Newton-Krylov solver outperforms fixed point ones while introducing more complexity to the problem due to the evaluation of the Jacobian. Fixed-point solver with Aitken's relaxation method also proved to be a simple, yet efficient method for FSI simulations.
dc.publisherInstitute of Physics (IOP)
dc.subjectÀrees temàtiques de la UPC::Enginyeria mecànica
dc.subject.lcshFluid-structure interaction
dc.subject.otherapproximation theory
dc.subject.otherblood vessels
dc.subject.otherNewton method
dc.subject.otherFSI simulation
dc.subject.otherAitken's relaxation method
dc.subject.otherfixed-point solver
dc.subject.otherapproximated Jacobian
dc.subject.otherNewton-Krylov method
dc.subject.otherdynamic relaxation
dc.subject.otherstatic relaxation
dc.subject.otherfixed-point method
dc.subject.otherpressure stress
dc.subject.otheraddedmass term
dc.subject.otherlightweight elastic structure
dc.subject.otherincompressible viscous fluid
dc.subject.otherfluid-structure interaction system
dc.subject.othernumerical simulation
dc.subject.otherbiomechanical fluid-structure interaction problems
dc.subject.otherpartitioned semiimplicit method
dc.titlePartitioned semi-implicit methods for simulation of biomechanical fluid-structure interaction problems
dc.typeConference report
dc.subject.lemacInteracció fluid-estructura
dc.contributor.groupUniversitat Politècnica de Catalunya. CTTC - Centre Tecnològic de la Transferència de Calor
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
upcommons.citation.authorNaseri, A., Lehmkuhl, O., Gonzalez, I., Oliva, A.
upcommons.citation.contributorEuropean Thermal-Sciences Conference
upcommons.citation.publicationNameJournal of Physics: conference series, vol. 745, 2016

Files in this item


This item appears in the following Collection(s)

Show simple item record

Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution 3.0 Spain