Flow field and wake structure characteristics imposed by single seagrass blade surrogates

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dc.identifier.uri http://dx.doi.org/10.15488/13044
dc.identifier.uri https://www.repo.uni-hannover.de/handle/123456789/13148
dc.contributor.author Taphorn, M. eng
dc.contributor.author Villanueva, R. eng
dc.contributor.author Paul, M. eng
dc.contributor.author Visscher, J. eng
dc.contributor.author Schlurmann, T. eng
dc.date.accessioned 2022-11-18T09:42:47Z
dc.date.available 2022-11-18T09:42:47Z
dc.date.issued 2021-07-02
dc.identifier.citation Taphorn, M.; Villanueva, R.; Paul, M.; Visscher, J.; Schlurmann, T.: Flow field and wake structure characteristics imposed by single seagrass blade surrogates. In: Journal of Ecohydraulics 7 (2022), Nr. 1, S. 58-70. DOI: https://doi.org/10.1080/24705357.2021.1938253 eng
dc.description.abstract Seagrass surrogates are commonly used to mimic the behaviour of seagrasses exposed to currents and their effects on flow fields. The interaction is highly dependent on the chosen mechanic and geometric properties of the surrogates and needs to be understood in order to design artificial meadows. The interaction of single surrogates in unidirectional flow fields is studied by means of physical modelling. Surrogates made of plastic materials with different flexural rigidities, buoyancies and geometries are exposed to varying flow velocities. The instantaneous velocity fields in the vicinity and wake of the surrogates are measured by stereoscopic Particle Image Velocimetry (PIV). All employed surrogates disrupt and interact with the flow field by changing their posture. An empirical relation is derived between the flexural rigidity, buoyancy and characteristic diameter of the surrogates and the imposed differences in the attenuation ratio of flow velocities. Further, the approaching flow velocity and distance behind the surrogate influence the estimated attenuation. The vortex shedding frequency imposed by artificial seagrass is lower than frequencies determined for infinite, rigid cylindrical structures. Three main characterizing properties: the modulus of elasticity, buoyancy and cross-sectional dimensions need to be taken into account for design of artificial seagrass meadows. Our findings advance knowledge of fluid-structure interactions of flexible materials and help to progress proper design of artificial seagrass meadows. eng
dc.language.iso eng eng
dc.publisher London : Taylor & Francis Group
dc.relation.ispartofseries Journal of Ecohydraulics 7 (2022), Nr. 1 eng
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. eng
dc.subject artificial seagrass eng
dc.subject submerged vegetation eng
dc.subject stereoscopic PIV eng
dc.subject flow-vegetation interaction eng
dc.subject flexible surrogates eng
dc.subject.ddc 530 | Physik eng
dc.title Flow field and wake structure characteristics imposed by single seagrass blade surrogates eng
dc.type Article eng
dc.type Text eng
dc.relation.essn 2470-5365
dc.relation.doi 10.1080/24705357.2021.1938253
dc.bibliographicCitation.issue 1 eng
dc.bibliographicCitation.volume 7 eng
dc.bibliographicCitation.firstPage 58 eng
dc.bibliographicCitation.lastPage 70 eng
dc.description.version acceptedVersion eng
tib.accessRights frei zug�nglich eng
dc.bibliographicCitation.journalTitle Journal of Ecohydraulics eng

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