Reference : Numerical investigation of flow patterns in rectangular shallow reservoirs
Scientific journals : Article
Engineering, computing & technology : Civil engineering
http://hdl.handle.net/2268/81390
Numerical investigation of flow patterns in rectangular shallow reservoirs
English
Dufresne, Matthieu [> >]
Dewals, Benjamin mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH) >]
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) >]
May-2011
Engineering Applications of Computational Fluid Mechanics
Hong Kong Polytechnic University
5
2
247-258
Yes
International
1994-2060
1997-003X
Hong Kong
China
[en] shallow reservoirs ; flow instability ; sedimentation
[en] The present work gives findings profitable for the person who wants to evaluate an asymmetric detach-reattach flow. In this study, the capability of a two-dimensional shallow-water numerical model to simulate the symmetric and asymmetric flows that can take place in rectangular shallow reservoirs varying the lateral expansion ratio and the dimensionless length is investigated. For a large lateral expansion ratio, the use of two protocols of simulation highlighted a high sensitivity of the simulated flow pattern to the initial condition. Comparison between simulated results and experimental data showed a good agreement for the critical shape parameter (combination of the lateral expansion ratio and the dimensionless length) between symmetric and asymmetric flows. A good agreement was also found for the value of the shorter reattachment length of asymmetric flows. For small lateral expansion ratios, the agreement was not so good. The model was used for even larger lateral expansion ratios in order to numerically extend the experimental dataset. This predictive work showed that the shape parameter, whose expression was only based on experiments carried out for small lateral expansion ratios, was also relevant for larger values. Moreover, the predicted values of the shorter reattachment length were also consistent with a regression only based on experimental results.
Aquapôle - AQUAPOLE
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/81390
http://jeacfm.cse.polyu.edu.hk/

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
paper_dufresne_updated_3.docAuthor preprint2.26 MBRequest copy
Restricted access
Dufresne_2010_Accepted_EngApplCFD.pdfAuthor preprint1.13 MBRequest copy
Open access
vol5no2-9_DufresneM.pdfhttp://jeacfm.cse.polyu.edu.hk/Publisher postprint1.92 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.