Article (Scientific journals)
Depth-integrated flow modelling taking into account bottom curvature
Dewals, Benjamin; Erpicum, Sébastien; Archambeau, Pierre et al.
2006In Journal of Hydraulic Research, 44 (6), p. 787-795
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Abstract :
[en] Successfully modelling flows over a spillway and on strongly vertically curved bottoms is a challenge for any depth-integrated model. This type of computation requires the use of axes properly inclined along the mean flow direction in the vertical plane and a modelling of curvature effects. The proposed generalized model per-forms such computations by means of suitable curvilinear coordinates in the vertical plane, leading to a fully integrated approach. This means that the flows in the upstream reservoir, on the spillway, in the stilling basin and in the downstream river reach are all handled in a single simulation. The velocity profile is generalized in comparison with the uniform one usually assumed in the classical shallow water equations. The pressure dis-tribution is modified as a function of the bottom curvature and is thus not purely hydrostatic. Representative test cases, as well as the application of the extended model to the design of a large hydraulic structure in Bel-gium, lead to satisfactory validation results.
Research center :
Aquapôle - ULiège
Disciplines :
Civil engineering
Author, co-author :
Dewals, Benjamin  ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Erpicum, Sébastien  ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydraulique génér., const. hydraul. et méc. des fluides
Archambeau, Pierre  ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydrodynamique appl. et constructions hydrauliques (HACH)
Detrembleur, Sylvain ;  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 :
Depth-integrated flow modelling taking into account bottom curvature
Publication date :
2006
Journal title :
Journal of Hydraulic Research
ISSN :
0022-1686
eISSN :
1814-2079
Publisher :
International Association for Hydraulic Research, Delft, Netherlands
Volume :
44
Issue :
6
Pages :
787-795
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Available on ORBi :
since 24 February 2010

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