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Original Articles

Approximate translation in the Muskingum model

Translation approximative dans le modèle de Muskingum

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Pages 19-27 | Received 04 Aug 1981, Accepted 18 Sep 1981, Published online: 24 Dec 2009
 

ABSTRACT

The quasi-translatory properties of the Muskingum flood routing methods are demonstrated. The conditions for best approximation of the pure translation model by single and multiple Muskingum models are developed. Instead of the finite difference methods used in the literature the transfer function approach is analysed, which gives a new, general insight into the problem. The impact of physical interpretation of the Muskingum model parameters upon the quasi-translatory properties of the model is outlined.

RESUME

Ce rapport démontre les propriétés quasi-translatoires de la méthode de Muskingum pour le calcul de la propagation des ondes de crues. Les conditions sont présentées, pour lesquelles le modèle de Muskingum (simple ou multiple) peut être considéré comme une bonne approximation du modèle à translation pur. On cherche la solution du problème en utilisant la transmittance, c'est-à-dire sans employer la méthode des différences finies. On esquisse l'influence de l'interprétation physique des paramètres de la méthode de Muskingum sur les propriétés quasi-translatoires du modèle.

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