Point torque representations of ciliary flows

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dc.contributor.authorSelvan, S.A.
dc.contributor.authorDuck, P.W.
dc.contributor.authorPihler-Puzović, D.
dc.contributor.authorBrumley, D.R.
dc.date.issued2023
dc.description.abstractCiliary flows are generated by a vast array of eukaryotic organisms, from unicellular algae to mammals, and occur in a range of different geometrical configurations. We employ a point torque—or “rotlet”—model to capture the time-averaged ciliary flow above a planar rigid wall. We demonstrate the advantages (i.e., accuracy and computational efficiency) of using this, arguably simpler, approach compared to other singularity-based models in Stokes flows. Then, to model ciliary flows in confined spaces, we extend the point torque solution to a bounded domain between two plane parallel no-slip walls. The flow field is resolved using the method of images and Fourier transforms, and we analyze the role of confinement by comparing the resultant fluid velocity to that of a rotlet near a single wall. Our results suggest that the flow field of a single cilium is not changed significantly by the confinement, even when the distance between the walls is commensurate with the cilium's length.
dc.description.statementofresponsibilitySiluvai Antony Selvan, Peter W. Duck, Draga Pihler-Puzović, Douglas R. Brumley
dc.identifier.citationPhysical Review Fluids, 2023; 8(12):123103-1-123103-23
dc.identifier.doi10.1103/PhysRevFluids.8.123103
dc.identifier.issn2469-990X
dc.identifier.issn2469-990X
dc.identifier.urihttps://hdl.handle.net/2440/147047
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/DE180100911
dc.rights©2023 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevfluids.8.123103
dc.subjectgical fluid dynamics; swimming; cilia; flagella
dc.titlePoint torque representations of ciliary flows
dc.typeJournal article
pubs.publication-statusPublished

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