Reference : Experimental study of velocity fields in rectangular shallow reservoirs
Scientific journals : Article
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/107485
Experimental study of velocity fields in rectangular shallow reservoirs
English
Dewals, Benjamin mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydraulics in Environmental and Civil Engineering >]
Erpicum, Sébastien mailto [Université de Liège - ULg > Services généraux (Faculté des sciences appliquées) > Scientifiques attachés au Doyen (Sc.appliquées) >]
Archambeau, Pierre mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH) >]
Pirotton, Michel mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH) >]
2012
Journal of Hydraulic Research
International Association for Hydraulic Research
50
4
435-436
Yes
International
0022-1686
Delft
The Netherlands
[en] Reservoir ; Flow stability ; Hysteresis
[en] The Authors of the discussed paper present the results of an experimental study to improve the flow classification in rectangular shallow reservoirs. Although previous papers have paved the way for this classification (Dewals et al. 2008, Dufresne et al. 2010), the Authors are complemented for the detailed flow field measurements conducted for a high number of reservoir geometries.
For the tested hydraulic conditions, the Authors report a transition zone corresponding to an ‘unstable’ flow pattern. Repeated tests under similar conditions lead alternately to a symmetric or an asymmetric flow field. In this discussion, it is intended below to shed light on this transition zone using 2D numerical simulations. The Authors state that the flow in the transition zone is sensitive to so-called ‘external perturbations’, whereas we argue that the flow is particularly influenced by the initial test conditions. Using a particular post-processing of the computed flow fields, a hysteresis effect is detected.
Aquapôle - AQUAPOLE
Researchers ; Professionals
http://hdl.handle.net/2268/107485

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