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Lubrication analysis of peristaltic motion in non-axisymmetric annular tubes

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Mecánica de Fluidoses
dc.contributor.authorCoenen, Wilfried
dc.contributor.authorZhang, X.
dc.contributor.authorSanchez Perez, Antonio Luis
dc.contributor.funderComunidad de Madrides
dc.date.accessioned2023-05-22T13:01:01Z
dc.date.available2023-05-22T13:01:01Z
dc.date.issued2021-08-25
dc.description.abstractThis paper addresses peristaltic flow induced in a non-axisymmetric annular tube by a periodic small-amplitude wave of arbitrary shape propagating axially along its inner surface, assumed to be a circular cylinder. The study is motivated by recent in vivo experimental observations pertaining to the flow of cerebrospinal fluid along the perivascular spaces of cerebral arteries. The analysis employs the lubrication approximation, describing low-Reynolds-number peristaltic flow in the long-wavelength approximation. Closed-form analytic expressions are derived for the average pumping rate in infinitely long tubes and also in tubes of finite length. Consideration is also given to the transverse motion arising in non-axisymmetric tubes. For small-amplitude waves, the solution is reduced to the integration of a parameter-free Stokes-flow problem, which is solved for relevant cross-sectional shapes, with closed-form analytical results derived for thin canals.es
dc.identifier.bibliographicCitationCoenen, W., Zhang, X. Y., & Sánchez, A. L. (2021). Lubrication analysis of peristaltic motion in non-axisymmetric annular tubes. Journal of Fluid Mechanics, 921.en
dc.identifier.doihttp://dx.doi.org/10.1017/jfm.2021.525
dc.identifier.issn0022-1120
dc.identifier.publicationfirstpageR2-1es
dc.identifier.publicationlastpageR2-12es
dc.identifier.publicationtitleJOURNAL OF FLUID MECHANICSes
dc.identifier.publicationvolume921es
dc.identifier.urihttps://hdl.handle.net/10016/37328
dc.identifier.uxxiAR/0000032862
dc.language.isoengen
dc.publisherCambridge University Pressen
dc.relation.projectIDThis work was supported by the National Science Foundation through grant number 1853954. W.C. acknowledges partial support from the 'Convenio Plurianual Comunidad de Madrid - Universidad Carlos III de Madrid' through grant CSFLOW-CM-UC3M.en
dc.rights© The Author(s), 2021en
dc.rightsAtribución 3.0 Españaes
dc.rights.accessRightsopen accessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/*
dc.subject.ecienciaFísicaes
dc.subject.ecienciaIngeniería Industriales
dc.subject.ecienciaIngeniería Mecánicaes
dc.subject.ecienciaMaterialeses
dc.subject.ecienciaQuímicaes
dc.subject.otherBiomedical flowsen
dc.subject.otherPeristaltic pumpingen
dc.titleLubrication analysis of peristaltic motion in non-axisymmetric annular tubesen
dc.typeresearch article*
dc.type.hasVersionVoR*
dspace.entity.typePublication
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