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Original Articles

Hydrodynamic derivation of a variable parameter Muskingum method: 1. Theory and solution procedure

Démonstration hydrodynamique d'une méthode de Muskingum à parameètres variables: 1. Théorie et procédure

Pages 431-442 | Received 08 Feb 1993, Accepted 07 Apr 1994, Published online: 29 Dec 2009
 

Abstract

An approach is presented for directly deriving a variable parameter Muskingum method from the St. Venant equations for routing floods in channels having any shape of prismatic cross-section and flow following either Manning's or Chezy's friction law. The approach also allows the simultaneous computation of the stage hydrograph corresponding to a given inflow or the routed hydrograph. This first paper also describes the solution procedure for routing the discharge hydrograph. A second paper (Perumal, 1994b) presents a verification of the methodology.

Résumé

Cet article présente une méthode permettant d'établir directement à partir des équations de Saint Venant une formule de Muskingum à paramètres variables pour le routage des écoulements de crue dans des biefs présentant des lois de frottement de Manning ou de Chézy. Cette approche permet de calculer dans le même temps le limnigramme correspondant à un débit entrant donné de l'hydrogramme calculé. Ce premier papier décrit également la procédure de calcul de l'hydrogramme. Un second papier (Perumal, 1994b) présente une validation de la méthodologie.

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