Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics
<p>Physical scale experiments enhance our understanding of fluvial, tidal and coastal processes. However, it has proven challenging to acquire accurate and continuous data on water depth and flow velocity due to limitations of the measuring equipment and necessary simplifications during post-p...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-11-01
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| Series: | Earth Surface Dynamics |
| Online Access: | https://esurf.copernicus.org/articles/8/955/2020/esurf-8-955-2020.pdf |
| _version_ | 1818162930368118784 |
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| author | S. A. H. Weisscher M. Boechat-Albernaz J. R. F. W. Leuven J. R. F. W. Leuven W. M. Van Dijk Y. Shimizu M. G. Kleinhans |
| author_facet | S. A. H. Weisscher M. Boechat-Albernaz J. R. F. W. Leuven J. R. F. W. Leuven W. M. Van Dijk Y. Shimizu M. G. Kleinhans |
| author_sort | S. A. H. Weisscher |
| collection | DOAJ |
| description | <p>Physical scale experiments enhance our understanding of fluvial, tidal and coastal processes. However, it has proven challenging to acquire accurate and continuous data on water depth and flow velocity due to limitations of the measuring equipment and necessary simplifications during post-processing. A novel means to augment measurements is to numerically model flow over the experimental digital elevation models. We investigated to what extent the numerical hydrodynamic model Nays2D can reproduce unsteady, nonuniform shallow flow in scale experiments and under which conditions a model is preferred to measurements. To this end, we tested Nays2D for one tidal and two fluvial scale experiments and extended Nays2D to allow for flume tilting, which is necessary to steer tidal flow. The modelled water depth and flow velocity closely resembled the measured data for locations where the quality of the measured data was most reliable, and model results may be improved by applying a spatially varying roughness. The implication of the experimental data–model integration is that conducting experiments requires fewer measurements and less post-processing in a simple, affordable and labour-inexpensive manner that results in continuous spatio-temporal data of better overall quality. Also, this integration will aid experimental design.</p> |
| first_indexed | 2024-12-11T16:41:29Z |
| format | Article |
| id | doaj.art-8fadf6f6d60c4934a87640eb6fce810c |
| institution | Directory Open Access Journal |
| issn | 2196-6311 2196-632X |
| language | English |
| last_indexed | 2024-12-11T16:41:29Z |
| publishDate | 2020-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth Surface Dynamics |
| spelling | doaj.art-8fadf6f6d60c4934a87640eb6fce810c2022-12-22T00:58:19ZengCopernicus PublicationsEarth Surface Dynamics2196-63112196-632X2020-11-01895597210.5194/esurf-8-955-2020Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamicsS. A. H. Weisscher0M. Boechat-Albernaz1J. R. F. W. Leuven2J. R. F. W. Leuven3W. M. Van Dijk4Y. Shimizu5M. G. Kleinhans6Faculty of Geosciences, Utrecht University, Princetonlaan 8A, 3584 CB Utrecht, the NetherlandsFaculty of Geosciences, Utrecht University, Princetonlaan 8A, 3584 CB Utrecht, the NetherlandsRoyal HaskoningDHV, Rivers & Coasts – Water, P.O. Box 151, 6500 AD Nijmegen, the NetherlandsDepartment of Environmental Sciences, Wageningen University, 6708 PB Wageningen, the NetherlandsArcadis, Rivers & Coasts, P.O. Box 220, 3800 AE Amersfoort, the NetherlandsFaculty of Engineering, Hokkaido University, North 13, West 8, Kitaku, Sapporo, Hokkaido, 080-8628, JapanFaculty of Geosciences, Utrecht University, Princetonlaan 8A, 3584 CB Utrecht, the Netherlands<p>Physical scale experiments enhance our understanding of fluvial, tidal and coastal processes. However, it has proven challenging to acquire accurate and continuous data on water depth and flow velocity due to limitations of the measuring equipment and necessary simplifications during post-processing. A novel means to augment measurements is to numerically model flow over the experimental digital elevation models. We investigated to what extent the numerical hydrodynamic model Nays2D can reproduce unsteady, nonuniform shallow flow in scale experiments and under which conditions a model is preferred to measurements. To this end, we tested Nays2D for one tidal and two fluvial scale experiments and extended Nays2D to allow for flume tilting, which is necessary to steer tidal flow. The modelled water depth and flow velocity closely resembled the measured data for locations where the quality of the measured data was most reliable, and model results may be improved by applying a spatially varying roughness. The implication of the experimental data–model integration is that conducting experiments requires fewer measurements and less post-processing in a simple, affordable and labour-inexpensive manner that results in continuous spatio-temporal data of better overall quality. Also, this integration will aid experimental design.</p>https://esurf.copernicus.org/articles/8/955/2020/esurf-8-955-2020.pdf |
| spellingShingle | S. A. H. Weisscher M. Boechat-Albernaz J. R. F. W. Leuven J. R. F. W. Leuven W. M. Van Dijk Y. Shimizu M. G. Kleinhans Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics Earth Surface Dynamics |
| title | Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics |
| title_full | Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics |
| title_fullStr | Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics |
| title_full_unstemmed | Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics |
| title_short | Complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics |
| title_sort | complementing scale experiments of rivers and estuaries with numerically modelled hydrodynamics |
| url | https://esurf.copernicus.org/articles/8/955/2020/esurf-8-955-2020.pdf |
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