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| Titel |
Particle trajectories beneath wave-current interaction in a two-dimensional field |
| VerfasserIn |
Y.-Y. Chen, H.-C. Hsu, H.-H. Hwung |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 19, no. 2 ; Nr. 19, no. 2 (2012-03-16), S.185-197 |
| Datensatznummer |
250014187
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| Publikation (Nr.) |
 copernicus.org/npg-19-185-2012.pdf |
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| Zusammenfassung |
| Within the Lagrangian reference framework we present a third-order trajectory
solution for water particles in a two-dimensional wave-current interaction
flow. The explicit parametric solution highlights the trajectory of a water
particle and the wave kinematics above the mean water level and within a
vertical water column, which were calculated previously by an approximation
method using an Eulerian approach. Mass transport associated with a particle
displacement can now be obtained directly in Lagrangian form without using
the transformation from Eulerian to Lagrangian coordinates. In particular,
the Lagrangian wave frequency and the Lagrangian mean level of particle
motion can also be obtained, which are different from those in an Eulerian
description. A series of laboratory experiments are performed to measure the
trajectories of particles. By comparing the present asymptotic solution with
laboratory experiments data, it is found that theoretical results show
excellent agreement with experimental data. Moreover, the influence of a
following current is found to increase the relative horizontal distance
traveled by a water particle, while the converse is true in the case of an
opposing current. |
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