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| Titel |
Study on hydraulic resistance of erodible bed at the Chiyoda experimental flume |
| VerfasserIn |
T. Kakinuma, T. Inoue, R. Akahori, A. Takeda |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: Proceedings of river, coastal and estuarine morphodynamics ; Nr. 39 (2014-04-01), S.81-87 |
| Datensatznummer |
250121308
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| Publikation (Nr.) |
 copernicus.org/adgeo-39-81-2014.pdf |
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| Zusammenfassung |
| The authors made erodible bed experiments under steady flow condition at the
Chiyoda Experimental Flume, a large-scale facility constructed on the
floodplain of the Tokachi River, and observed sand waves on the bed of the
flume. In this study, the characteristics of the sand waves are examined
along the longitudinal survey lines and confirmed to be dunes. Next, the
authors estimated Manning's roughness coefficients from the observed
hydraulic values and assumed that the rise of the coefficients attributed to
the sand wave development. Finally, vertical flow distribution on the sand
waves are examined, and observed velocity distribution on the crest of waves
found to be explained by the logarithmic distribution theory. |
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