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| Titel |
Viscous effects and runup. Are small scale experiments reliable for full scale description or benchmark tests ? |
| VerfasserIn |
G. Pedersen, A. Bertelsen, G. Sælevik, A. Jensen |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250021702
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| Zusammenfassung |
| New experimental investigations have revealed that there may be large
discrepancies between measured and computed runup heights, even for
non-breaking waves on moderately steep beaches (10 degrees). The application
of PIV and acoustic wave gauges allows a detailed comparison with
results from the models, which employ hydrodynamic theory that
range from the NLSW equations to the Navier-Stokes equations with
a VOF description of the free surface. Based on experimental and theoretical
velocity fields the viscous boundary layers in the swash zone are analyzed and
shown to have an important effect on the runup. This may have severe
implications for the use of experiments in relation to tsunami studies and
benchmark tests. |
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