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Titre :
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Entropy approach for 2D velocity distribution in open-channel flow (2012)
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Auteurs :
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Gustavo Marini, Auteur ;
Giuseppe De Martino, Auteur ;
Nicola Fontana, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of hydraulic research (Vol. 49 N° 6, Novembre/Décembre 2011)
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Article en page(s) :
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pp. 784-790
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Note générale :
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Hydraulique
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Langues :
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Anglais
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Index. décimale :
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627 (Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques)
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Tags :
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Entropy Flow measurement Open-channel flow Shannon entropy Streamflow Velocity distribution
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Résumé :
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In this paper, considering time-averaged velocity as a random variable, two-dimensional (2D) velocity distributions in open-channel flow have been derived based on the Shannon entropy concept and the principle of maximum entropy. The velocity distributions so derived have limited practical use, since they contain too many parameters that need to be experimentally calibrated and hence are not convenient to apply. This work develops a new entropy-based approach for deriving a 2D velocity distribution in open-channel flow, thereby investigating a rectangular geometric domain. The derived distribution is parsimonious, and the values determined using the proposed distribution are found to be in good agreement with the experimentally-measured velocity values.
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DEWEY :
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627
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ISSN :
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0022-1686
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En ligne :
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http://www.tandfonline.com/doi/abs/10.1080/00221686.2011.635889
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