Article (Scientific journals)
Experimental investigation of meandering jets in shallow reservoirs
Peltier, Yann; Erpicum, Sébastien; Archambeau, Pierre et al.
2014In Environmental Fluid Mechanics, 14 (3), p. 699-710
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Keywords :
Shallow reservoir; Meandering jet; Large-scale PIV; Proper orthogonal decomposition
Abstract :
[en] Meandering flows in rectangular shallow reservoirs were experimentally investi- gated. The characteristic frequency, the longitudinal wave length and the mean lateral exten- sion of the meandering jet were extracted from the first paired modes, obtained by a proper orthogonal decomposition of the surface velocity field measured by large scale PIV. The depth-normalised characteristic lengths and the Strouhal number were then compared to the main dimensionless numbers characterizing the experiments: Froude number, friction num- ber and reservoir shape factor. The normalised wave length and mean lateral extension of the meandering jet are neither correlated with the Froude number nor with the reservoir shape factor; but a clear relationship is found with the friction number. Similarly, the Strouhal num- ber is found proportional to a negative power of the friction number. In contrast, the Froude number and the reservoir shape factor enable to predict the occurrence of a meandering flow pattern: meandering jets occur for Froude number greater than 0.21 and for a shape factor smaller than 6.2.
Research center :
Aquapôle - ULiège
Disciplines :
Civil engineering
Author, co-author :
Peltier, Yann ;  Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Erpicum, Sébastien  ;  Université de Liège - ULiège > Scientifiques attachés au Doyen (Sc.appliquées)
Archambeau, Pierre  ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Pirotton, Michel ;  Université de Liège - ULiège > Département ArGEnCo > HECE (Hydraulics in Environnemental and Civil Engineering)
Dewals, Benjamin  ;  Université de Liège - ULiège > Département ArGEnCo > Hydraulics in Environmental and Civil Engineering
Language :
English
Title :
Experimental investigation of meandering jets in shallow reservoirs
Publication date :
05 February 2014
Journal title :
Environmental Fluid Mechanics
ISSN :
1567-7419
eISSN :
1573-1510
Publisher :
Springer Science & Business Media B.V., Dordrecht, Netherlands
Volume :
14
Issue :
3
Pages :
699-710
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 February 2014

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