A Numerical Study of a Rotor Induced Flow Based on a Finite-State Dynamic Wake Model

dc.contributor.authorFerreira, L. G. A. [UNESP]
dc.contributor.authorPagani, C. C. [UNESP]
dc.contributor.authorGennaro, E. M. [UNESP]
dc.contributor.authorDe Marqui, C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversity of São Paulo
dc.date.accessioned2021-07-14T10:37:15Z
dc.date.available2021-07-14T10:37:15Z
dc.date.issued2021-07-02
dc.description.abstractA Helicopter rotor undergoes unsteady aerodynamic loads ruled by the aeroelastic coupling between the elastic blades and the dynamic wake induced by rotary wings. Modeling the dynamic interaction between the structural and aerodynamic fields is a key point to understand aeroelastic phenomena associated with rotor stability, flow induced vibration and noise generation, among others. In this study, we address the Generalized Dynamic Wake Model, which describes the inflow velocity field at the rotor disk as a superposition of a finite number of induced flow states. It is a mature model that has been validated based on experimental data and numerically investigated from an eigenvalue problem formulation, whose eigenvalues and eigenvectors provide a deeper insight on the dynamic wake behavior. The paper extends the results presented in the literature to date in order to support physical interpretation of inflow states drawn from the finite-state wake model for flight conditions varying from hover to edgewise flight. The discussion of the wake model mathematical formulation is also oriented towards practical engineering applications to fill a gap in the literature.en
dc.description.affiliationSão Paulo State University
dc.description.affiliationUniversity of São Paulo, Department of Aeronautic Engineering
dc.description.affiliationUnespSão Paulo State University
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2018/26208-0
dc.description.sponsorshipIdCNPq: 158480/2014-7; 383876/2015-0
dc.format.extent307-324
dc.identifierhttp://dx.doi.org/10.5540/tcam.2021.022.02.00307
dc.identifier.citationTrends in Computational and Applied Mathematics. Sociedade Brasileira de Matemática Aplicada e Computacional - SBMAC, v. 22, n. 2, p. 307-324, 2021.
dc.identifier.doi10.5540/tcam.2021.022.02.00307
dc.identifier.fileS2676-00292021000200307.pdf
dc.identifier.issn2676-0029
dc.identifier.scieloS2676-00292021000200307
dc.identifier.urihttp://hdl.handle.net/11449/212270
dc.language.isoeng
dc.publisherSociedade Brasileira de Matemática Aplicada e Computacional - SBMAC
dc.relation.ispartofTrends in Computational and Applied Mathematics
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectunsteady wakeen
dc.subjecteigen-analysisen
dc.subjectinflow statesen
dc.titleA Numerical Study of a Rotor Induced Flow Based on a Finite-State Dynamic Wake Modelen
dc.typeArtigo
unesp.author.orcid0000-0002-3592-4524[1]
unesp.author.orcid0000-0001-8900-1939[2]
unesp.author.orcid0000-0003-1074-396X[3]
unesp.author.orcid0000-0003-4058-1885[4]

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