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Bed-shear stress characteristics of a simple, prismatic, rectangular channel / M. Sterling in Journal of engineering mechanics, Vol. 134 n°12 (Décembre 2008) 

Public ISBD [article]  in Journal of engineering mechanics > Vol. 134 n°12 (Décembre 2008) . - pp. 1085–1094. Titre : Bed-shear stress characteristics of a simple, prismatic, rectangular channel Type de document : texte imprimé Auteurs : M. Sterling, Auteur ; F. Beaman, Auteur ; H. Morvan, Auteur Année de publication : 2009 Article en page(s) : pp. 1085–1094. Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Shear  stress  Sampling  Channels  River  basins Résumé : This paper examines the use of data obtained from large eddy simulations in exploring the instantaneous characteristics of boundary shear stress. The probability density functions (PDF) of the shear stress are shown to be non-Gaussian, whereas the PDF of the shear force per unit length is found to be approximately Gaussian. Conditional sampling is used in order to provide an insight into the average behavior of an extreme shear stress event. Finally, proper orthogonal decomposition illustrates that the behavior of the shear stress is complex and cannot necessarily be attributed to a single major flow event. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282008%29134%3A12%281 [...] [article] Bed-shear stress characteristics of a simple, prismatic, rectangular channel [texte imprimé] / M. Sterling, Auteur ; F. Beaman, Auteur ; H. Morvan, Auteur . - 2009 . - pp. 1085–1094. Mécanique appliquée Langues : Anglais (eng) in Journal of engineering mechanics > Vol. 134 n°12 (Décembre 2008) . - pp. 1085–1094. Mots-clés : Shear  stress  Sampling  Channels  River  basins Résumé : This paper examines the use of data obtained from large eddy simulations in exploring the instantaneous characteristics of boundary shear stress. The probability density functions (PDF) of the shear stress are shown to be non-Gaussian, whereas the PDF of the shear force per unit length is found to be approximately Gaussian. Conditional sampling is used in order to provide an insight into the average behavior of an extreme shear stress event. Finally, proper orthogonal decomposition illustrates that the behavior of the shear stress is complex and cannot necessarily be attributed to a single major flow event. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282008%29134%3A12%281 [...]