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dc.contributor.authorMartí, Julio Marcelo
dc.contributor.authorRyzhakov, Pavel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.identifier.citationMarti, J.; Ryzhakov, P. Improving accuracy of the moving grid particle finite element method via a scheme based on Strang splitting. "Computer methods in applied mechanics and engineering", Setembre 2020, vol. 369, p. 113212:1-113212:17.
dc.description.abstractParticle finite element method (PFEM) is a computational tool suitable for simulating fluid dynamics problems characterized by presence of moving boundaries. In this paper a new version of the method for incompressible flow problems is proposed aiming at accuracy improvement. This goal is achieved essentially by applying Strang operator splitting to Navier–Stokes equations and selecting adequate integration schemes for the resulting advective and Stokes sub-problems. For achieving efficient implementation, the pressure and the velocity in the Stokes part are decoupled via the fractional step technique as in the classical PFEM. However, at the first fractional step an explicit pressure prediction procedure for alleviating mass losses is introduced. Three test cases are solved, validating the methodology and estimating its accuracy. The numerical evidence proves that the proposed scheme improves the accuracy of the PFEM.
dc.description.sponsorshipThe authors acknowledges financial support from the Ministerio de Ciencia, Innovacion y Universidades of Spain via the “Severo Ochoa” Programme for Centres of Excellence in R&D (referece: CEX2018-000797-S) as well as via AMADEUS project grant (reference: PGC2018-101655-B-I00).
dc.rights2019. Elsevier
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.subjectÀrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits
dc.subjectÀrees temàtiques de la UPC::Física::Física de fluids::Flux de fluids
dc.subject.lcshNavier-Stokes equations--Numerical solutions
dc.subject.lcshComputational fluid dynamics
dc.subject.otherIncompressible Navier–Stokes
dc.subject.otherFree-surface flows
dc.subject.otherStrang splitting
dc.titleImproving accuracy of the moving grid particle finite element method via a scheme based on Strang splitting
dc.subject.lemacEquacions de Navier-Stokes -- Mètodes numèrics
dc.subject.lemacDinàmica de fluids computacional
dc.contributor.groupUniversitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
local.citation.authorMarti, J.; Ryzhakov, P.
local.citation.publicationNameComputer methods in applied mechanics and engineering

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