[en] Because of the PK-Weir geometric specificities, its hydraulic capacity remains difficult to predict without using experimental techniques. A 1D numerical model of the flow over a PK-Weir has been developed at the Research unit HACH at the University of Liege. It is based on a 1D modeling of the inlet and the outlet separately, with a single upstream reservoir and interactions between both flows by exchange of mass and momentum along the lateral crest. The comparison of the numerical results with various experimental data showed the ability of the numerical model to predict with reasonable accuracy the release capacity of a PK-Weir, whatever its geometry. The tests of the solver enable to highlight the significant influence of the inlet and outlet width on the weir release capacity. They also suggest that improvements of the numerical model may lie in the evaluation of the discharge coefficient of the lateral crest.
Research Center/Unit :
Aquapôle - ULiège FRIA
Disciplines :
Civil engineering
Author, co-author :
Erpicum, Sébastien ; Université de Liège - ULiège > Services généraux (Faculté des sciences appliquées) > Scientifiques attachés au Doyen (Sc.appliquées)
Machiels, Olivier ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Archambeau, Pierre ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Dewals, Benjamin ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Pirotton, Michel ; Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Language :
English
Title :
1D numerical modeling of the flow over a Piano Key Weir
Alternative titles :
[fr] Modélisation numérique 1D de l'écoulement sur un déversoir en touches de piano
Publication date :
2011
Event name :
1st international workshop on labyrinth and piano key weirs
Event organizer :
ULg-HACH
Event place :
Liege, Belgium
Event date :
9-11 February 2011
Audience :
International
Main work title :
Labyrinth and Piano Key Weirs - PKW 2011
Main work alternative title :
[fr] Déversoirs en labyrinthe et en touches de piano
Editor :
Erpicum, Sébastien ; Université de Liège - ULiège > Urban and Environmental Engineering
Laugier, Frédéric
Boillat, Jean Louis
Pirotton, Michel ; Université de Liège - ULiège > Urban and Environmental Engineering
Reverchon, Bernard
Schleiss, Anton
Publisher :
CRC Press/Balkema, Leiden, Netherlands
ISBN/EAN :
978-0-415-68282-4
Pages :
151-158
Peer reviewed :
Peer reviewed
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture
Blanc, P. & Lempérière, F. 2001. Labyrinth spillways have a promising future. Hydropower & Dams 8(4): 129-131. (Pubitemid 33128005)
Erpicum, S. 2006. Optimisation objective de paramètres en écoulements turbulents à surface libre sur maillage multibloc. Ph.D. Thesis, HACH, University of Liège, Belgium. In French.
Erpicum, S., Dewals, B.J., Archambeau, P., & Pirotton, M. 2010a. Dam-break flow computation based on an efficient flux-vector splitting. Journal of Computational and Applied Mathematics 234: 2143-2151.
Erpicum, S., Dewals, B.J., Archambeau, P., Detrembleur, S., & Pirotton, M. 2010b. Detailed inundation modeling using high resolution DEMs. Engineering Applications of Computational Fluid Mechanics 4(1): 196-208.
Erpicum, S., Dewals, B.J., Archambeau, P. & Pirotton M. 2010c. Reliable hydraulic numerical modeling with multiblock grids and linked models. Proc. of SimHydro: Hydraulic modeling and uncertainty, Sophia Antipolis, France.
Laugier, F. 2007. Design and construction of the first PianoKeyWeir spillway at Goulours dam. Hydropower& Dams 14(5): 94-100.
Laugier, F., Lochu, A., Gille, C., Leite Ribeiro, M. & Boillat, J-L. 2009. Design and construction of a labyrinth PK-WEIR spillway at Saint-Marc dam, France. Hydropower & Dams 16(5): 100-107.
Le Doucen, O., Leite Ribeiro, M., Boillat, J-L. & Schleiss, A. 2009. Etude paramétrique de la capacité des PK-Weirs. Colloque SHF "Modèles physiques hydrauliques", Lyon, France.
Luck, M., Lee, E-S., Mechitoua, N., Violeau, D., Laugier, F., Blancher, B. & Guyot, G. 2009. Modélisations physique et numérique 3D pour l'évaluation de la débitance et le design des évacuateurs de crue. Colloque SHF "Modèles physiques hydrauliques", Lyon, France.
Machiels, O., Erpicum, S., Archambeau, P., Dewals, B.J. & Pirotton, M. 2009. Large scale experimental study of piano key weirs. Proc. of 33rd IAHR Congress, Vancouver, Canada.
Nujic, M. 1995. Efficient implementation of non-oscillatory schemes for the computation of free-surface flows. Journal of Hydraulic Research 33(1):101-111.
Ouamane, A. & Lempérière, F. 2003. The piano keys weir: a new cost-effective solution for spillways. Hydropower & Dams 10(5): 144-149.
Ouamane, A. & Lempérière, F. 2006. Design of a new economic shape of weir. Berga et al. (eds), Dams and Reservoirs, Society and Environment in the 21st Century: 463-470. Taylor & Francis: London.
Truong Chi, H., Huynh Thanh, S., Ho Ta Khanh, M. 2006. Results of some piano keys weir hydraulic model tests in Vietnam. 22ème congrès des grands barrages - Barcelona: 581-596. ICOLD: Paris.
