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dc.contributor.authorPaul, Men
dc.contributor.authorRupprecht, Fen
dc.contributor.authorMöller, Ien
dc.contributor.authorBouma, TJen
dc.contributor.authorSpencer, Thomasen
dc.contributor.authorKudella, Men
dc.contributor.authorWolters, Gen
dc.contributor.authorvan Wesenbeeck, BKen
dc.contributor.authorJensen, Ken
dc.contributor.authorMiranda-Lange, Men
dc.contributor.authorSchimmels, Sen
dc.date.accessioned2018-09-05T12:51:16Z
dc.date.available2018-09-05T12:51:16Z
dc.date.issued2016-11-01en
dc.identifier.issn0378-3839
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/279644
dc.description.abstract© 2016Moving water exerts drag forces on vegetation. The susceptibility of vegetation to bending and breakage determines its flow resistance, and chances of survival, under hydrodynamic loading. To evaluate the role of individual vegetation parameters in this water-vegetation interaction, we conducted drag force measurements under a wide range of wave loadings in a large wave flume. Artificial vegetation elements were used to manipulate stiffness, frontal area in still water and material volume as a proxy for biomass. The aim was to compare: (i) identical volume but different still frontal area, (ii) identical stiffness but different still frontal area, and (iii) identical still frontal area but different volume. Comparison of mimic arrangements showed that stiffness and the dynamic frontal area (i.e., frontal area resulting from bending which depends on stiffness and hydrodynamic forcing) determine drag forces. Only at low orbital-flow velocities did the still frontal area dominate the force-velocity relationship and it is hypothesised that no mimic bending took place under these conditions. Mimic arrangements with identical stiffness but different overall material volume and still frontal area showed that forces do not increase linearly with increasing material volume and it is proposed that short distances between mimics cause their interaction and result in additional drag forces. A model, based on effective leaf length and characteristic plant width developed for unidirectional flow, performed well for the force time series under both regular and irregular waves. However, its uncertainty increased with increasing interaction of neighbouring mimics.
dc.titlePlant stiffness and biomass as drivers for drag forces under extreme wave loading: A flume study on mimicsen
dc.typeArticle
prism.endingPage78
prism.publicationDate2016en
prism.publicationNameCoastal Engineeringen
prism.startingPage70
prism.volume117en
dc.identifier.doi10.17863/CAM.6940
dcterms.dateAccepted2016-11-01en
rioxxterms.versionofrecord10.1016/j.coastaleng.2016.07.004en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2016-11-01en
dc.contributor.orcidSpencer, Thomas [0000-0003-2610-6201]
dc.identifier.eissn1872-7379
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEuropean Commission (261520)
pubs.funder-project-idIsaac Newton Trust (1135(s))
rioxxterms.freetoread.startdate2017-11-01


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