Afficher la notice abrégée

An interpolation-free ALE scheme for unsteady inviscid flows computations with large boundary displacements over three-dimensional adaptive grids

hal.structure.identifierDipartimento di Scienze e Tecnologie Aerospaziali [Milano] [DAER]
dc.contributor.authorRE, Barbara
hal.structure.identifierCertified Adaptive discRete moDels for robust simulAtions of CoMplex flOws with Moving fronts [CARDAMOM]
hal.structure.identifierInstitut Polytechnique de Bordeaux [Bordeaux INP]
dc.contributor.authorDOBRZYNSKI, Cecile
hal.structure.identifierDipartimento di Scienze e Tecnologie Aerospaziali [Milano] [DAER]
dc.contributor.authorGUARDONE, Alberto
dc.date.issued2017-07
dc.identifier.issn0021-9991
dc.description.abstractEnA novel strategy to solve the finite volume discretization of the unsteady Euler equations within the Arbitrary Lagrangian–Eulerian framework over tetrahedral adaptive grids is proposed. The volume changes due to local mesh adaptation are treated as continuous deformations of the finite volumes and they are taken into account by adding fictitious numerical fluxes to the governing equation. This peculiar interpretation enables to avoid any explicit interpolation of the solution between different grids and to compute grid velocities so that the Geometric Conservation Law is automatically fulfilled also for connectivity changes. The solution on the new grid is obtained through standard ALE techniques, thus preserving the underlying scheme properties, such as conservativeness, stability and monotonicity. The adaptation procedure includes node insertion, node deletion, edge swapping and points relocation and it is exploited both to enhance grid quality after the boundary movement and to modify the grid spacing to increase solution accuracy. The presented approach is assessed by three-dimensional simulations of steady and unsteady flow fields. The capability of dealing with large boundary displacements is demonstrated by computing the flow around the translating infinite- and finite-span NACA 0012 wing moving through the domain at the flight speed. The proposed adaptive scheme is applied also to the simulation of a pitching infinite-span wing, where the bi-dimensional character of the flow is well reproduced despite the three-dimensional unstructured grid. Finally, the scheme is exploited in a piston-induced shock-tube problem to take into account simultaneously the large deformation of the domain and the shock wave. In all tests, mesh adaptation plays a crucial role.
dc.language.isoen
dc.publisherElsevier
dc.subject.enALE scheme
dc.subject.enMesh adaptation
dc.subject.enTetrahedral grid
dc.subject.enFinite volume discretization
dc.subject.enEuler equations
dc.title.enAn interpolation-free ALE scheme for unsteady inviscid flows computations with large boundary displacements over three-dimensional adaptive grids
dc.typeArticle de revue
dc.identifier.doi10.1016/j.jcp.2017.03.034
dc.subject.halInformatique [cs]/Modélisation et simulation
dc.subject.halSciences de l'ingénieur [physics]
bordeaux.journalJournal of Computational Physics
bordeaux.page26 - 54
bordeaux.volume340
bordeaux.peerReviewedoui
hal.identifierhal-01633476
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01633476v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Journal%20of%20Computational%20Physics&rft.date=2017-07&rft.volume=340&rft.spage=26%20-%2054&rft.epage=26%20-%2054&rft.eissn=0021-9991&rft.issn=0021-9991&rft.au=RE,%20Barbara&DOBRZYNSKI,%20Cecile&GUARDONE,%20Alberto&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée