dc.identifier.uri |
http://dx.doi.org/10.15488/1581 |
|
dc.identifier.uri |
http://www.repo.uni-hannover.de/handle/123456789/1606 |
|
dc.contributor.author |
Bremm, Gian
|
|
dc.contributor.author |
Goseberg, Nils
|
|
dc.contributor.author |
Schlurmann, Torsten
|
|
dc.contributor.author |
Nistor, Ioan
|
|
dc.date.accessioned |
2017-05-31T11:16:22Z |
|
dc.date.available |
2017-05-31T11:16:22Z |
|
dc.date.issued |
2015 |
|
dc.identifier.citation |
Bremm, Gian; Goseberg, Nils; Schlurmann, Torsten; Nistor, Ioan: Long Wave Flow Interaction with a Single Square Structure on a Sloping Beach. In: Journal of Marine Science and Engineering 3 (2015), Nr. 3, S. 821-844. DOI: https://doi.org/10.3390/jmse3030821 |
|
dc.description.abstract |
In the context of dam breaks, tsunami, and flash floods, it is paramount to quantify the time-history of forces by the rapidly transient flow to vertical structures and the characteristics of the induced flow patterns. To resemble on-land tsunami-induced flow, a free-surface-piercing structure is exposed to long leading depression waves in a tsunami flume where long waves run up and down a 1:40 smooth and impermeable sloping beach after its generation by a volume-driven wave maker. The structure and its surrounding were monitored with force transducers, pressure gauges and cameras. Preparatory steady-state experiments were accomplished to determine the drag force coefficient of the square cylinder at various water depths. The flow during wave run-up and draw-down acting on the structure resulted in distinct flow pattern which were characteristic for the type of flow-structure interaction. Besides bow wave propagating upstream, a standing or partially-standing wave was observed in front of the structure together with a wake formation downstream, while a von Kármán vortex street developed during the deceleration phase of the flow motion and during draw-down. Force measurements indicated a sudden increase in the stream-wise total force starting with the arrival of the flow front during initial run-up. Lateral velocities showed significant oscillations in correlation with the von Kármán vortex street development. A comparison of the total measured base force with the analytically-calculated share of the drag force revealed that forces were prevailingly drag-dominated. |
eng |
dc.description.sponsorship |
EC/FP7/Marie Curie International Outgoing Fellowship |
|
dc.language.iso |
eng |
|
dc.publisher |
Basel : MDPI AG |
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dc.relation.ispartofseries |
Journal of Marine Science and Engineering 3 (2015), Nr. 3 |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
|
dc.subject |
drag force |
eng |
dc.subject |
flow-structure interaction |
eng |
dc.subject |
inertia force |
eng |
dc.subject |
tsunami on land flow |
eng |
dc.subject |
vortex shedding |
eng |
dc.subject.ddc |
550 | Geowissenschaften
|
ger |
dc.title |
Long Wave Flow Interaction with a Single Square Structure on a Sloping Beach |
|
dc.type |
Article |
|
dc.type |
Text |
|
dc.relation.issn |
2077-1312 |
|
dc.relation.doi |
https://doi.org/10.3390/jmse3030821 |
|
dc.bibliographicCitation.issue |
3 |
|
dc.bibliographicCitation.volume |
3 |
|
dc.bibliographicCitation.firstPage |
821 |
|
dc.bibliographicCitation.lastPage |
844 |
|
dc.description.version |
publishedVersion |
|
tib.accessRights |
frei zug�nglich |
|