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Transfert d'oxygène à l'aval d'un ouvrage hydraulique de basse chute
Vasel, J.L.; Vanderborght, P.; Michel, D.; Peters, J.J.; Hiver, J.M. (1990). Transfert d'oxygène à l'aval d'un ouvrage hydraulique de basse chute. Bull. Perm. Int. Assoc. Navig. Congr. 68: 187-199
In: Bulletin of the Permanent International Association of Navigation Congresses = Bulletin de l'Association Internationale Permanente des Congrès de Navigation. PIANC/PIANC = AIPCN: Bruxelles. ISSN 0374-1001, more
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Keywords
    Low head
    Models > Scale models
    Oxygen transfer
    Structures > Hydraulic structures
Authors  Top 
  • Vasel, J.L.
  • Vanderborght, P.
  • Michel, D.
  • Peters, J.J., more
  • Hiver, J.M.
Abstract
    Water flows are reaerated to a variable extent at hydraulic structures, depending on the discharge mode.After introducing the existing numerical models for quantifying aeration in the axis of both overflow and bottom flow, the authors examine the theoretical modelling of a combined flow which has only seldom been studied in hydraulics or in reaeration.Tests on a physical model showed the great importance of the flow-stream structure on oxygen transfer.The reaeration efficiency of a combined flow is defined by two formulas simulating both the overflow and the combined flow.This study aims mainly at pointing out the consequences of an optimum dam management on the quality of surface waters.
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