Affiliation:
1. Institute of Mechanics, Materials and Civil Engineering, Université Catholique de Louvain, Place du Levant 1, L5.05.01, 1348 Louvain-la-Neuve, Belgium
Abstract
Abstract
In order to validate the numerical methods aimed at the simulation of fast transient flows involving sediment transport and morphological changes, data are required. However, field data are scarce, or, if existing, are often inaccurate or incomplete, due to the difficulty of taking reliable measurements in such difficult flow conditions. Laboratory experiments constitute a good alternative to obtain validation data for numerical models. When performing simplified experiments, a limited number of well-identified flow features can be highlighted if appropriate measurements are taken. Advances in experimental techniques in the last decades have significantly enlarged the field of possible data acquisition, especially thanks to the development of non-intrusive techniques such as digital imagery. Non-intrusive techniques are of paramount importance when considering sediment transport because a measurement device interacting with the flow would also modify the observed morphological features. In this paper, several imaging-based techniques are presented for water-level and bed evolution measurements. The key features and advantages are discussed but also the drawbacks of those techniques. The discussion is illustrated by different examples that have resulted in data sets commonly used by scientists all over the world to test their numerical simulation tools.
Subject
Atmospheric Science,Geotechnical Engineering and Engineering Geology,Civil and Structural Engineering,Water Science and Technology
Reference31 articles.
1. Description of the Tous Dam break case study (Spain);Journal of Hydraulic Research,2007
2. Velocity-field measurements in a dam-break flow using a PTV Voronoï imaging technique;Experiments in Fluids,2011
3. Knickpoint migration process: experimental and numerical approaches,2004
4. Analytical, experimental, and numerical models of knickpoint migration,2009
5. The drainage of the Lake Ha! Ha! Reservoir and downstream geomorphic impacts along Ha! Ha! River, Saguenay Area, Quebec, Canada;Geomorphology,1999
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献