Bibliothèque Électronique Lac Saint-Pierre

Hydrodynamic modeling of Lake St. Pierre and the St. Lawrence river. Effect of aquatic vegetation

Fortin, G. R. et Leclerc, M. et Boudreau, P. (1994). Hydrodynamic modeling of Lake St. Pierre and the St. Lawrence river. Effect of aquatic vegetation. Canadian journal of civil engineering , 21 (3). p. 471-489.

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Résumé

The macrophytes (aquatic plants) can have a substantial effect on the hydrodynamics of some watercourses. A mathematical formulation for the resistance effect of macrophytes on the current is inserted in a two-dimensional finite element hydrodynamic model. The method introduced herein allows to take into account the morphology, the density, and the growth curve of the different species of macrophytes present in the river. The Lake Saint-Pierre between Sorel and Trois-Rivieres (Quebec, Canada) in the St. Lawrence River is used to demonstrate the approach. The mathematical aspect of the model is first briefly presented. The field surveys of macrophytes and some other data sets used with the model are then analyzed. Finally, after the calibration-validation step, which insures the good behavior of the model, some results are presented to show the effect of the macrophytes on the flow structure.

Type de document: Article scientifique
Statut du texte intégral: Autre
Mots-clés libres: Finite element method, Hydraulic resistance, Hydrodynamic model, Macrophytes, Manning's n, Open channel flow, Lac St-Pierre
Sujets: 2. Milieu physique > 2.2. Physiographie
3. Végétation, milieux humides
Date de dépôt: 30 juin 2016 14:34
Dernière modification: 30 juin 2016 14:34
URI: http://belsp.uqtr.ca/id/eprint/215

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Coopérative de solidarité de la Réserve de la biosphère du Lac-Saint-Pierre
Concepteur de la BELSP : André Barabé, Ph. D.