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Détail de l'auteur
Auteur Xingwei Chen
Documents disponibles écrits par cet auteur
Affiner la rechercheTurbulence characteristics of open-channel flow with bed suction / Xingwei Chen in Journal of engineering mechanics, Vol. 133 N°12 (Decembre 2007)
in Journal of engineering mechanics > Vol. 133 N°12 (Decembre 2007) . - pp.1388–1393.
Titre : Turbulence characteristics of open-channel flow with bed suction Type de document : texte imprimé Auteurs : Xingwei Chen, Auteur ; Yee-Meng Chiew, Auteur Année de publication : 2007 Article en page(s) : pp.1388–1393. Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Turbulence Suction Open channel flow Velocity profile Reynolds stress Résumé : The influence of bed suction on the characteristics of turbulent open channel flow is studied in a laboratory flume using a two-component laser Doppler velocimeter. The experimental results show how bed suction significantly affects the mean flow properties, turbulence levels, and Reynolds stress distributions. The data reveal the presence of a more negative vertical (downward) velocity. The results also show how the horizontal and vertical turbulence intensities and Reynolds shear stresses respond to suction. All these properties are found to reduce with increasing relative suctions: decreasing more rapidly around the bed region than that near the free surface. In the downstream direction, the flow structure in the suction zone undergoes a process of rapid readjustment within a transitional region. Beyond this region, the turbulence flow structures asymptotes toward an “equilibrium” region. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A12%281 [...] [article] Turbulence characteristics of open-channel flow with bed suction [texte imprimé] / Xingwei Chen, Auteur ; Yee-Meng Chiew, Auteur . - 2007 . - pp.1388–1393.
Mécanique appliquée
Langues : Anglais (eng)
in Journal of engineering mechanics > Vol. 133 N°12 (Decembre 2007) . - pp.1388–1393.
Mots-clés : Turbulence Suction Open channel flow Velocity profile Reynolds stress Résumé : The influence of bed suction on the characteristics of turbulent open channel flow is studied in a laboratory flume using a two-component laser Doppler velocimeter. The experimental results show how bed suction significantly affects the mean flow properties, turbulence levels, and Reynolds stress distributions. The data reveal the presence of a more negative vertical (downward) velocity. The results also show how the horizontal and vertical turbulence intensities and Reynolds shear stresses respond to suction. All these properties are found to reduce with increasing relative suctions: decreasing more rapidly around the bed region than that near the free surface. In the downstream direction, the flow structure in the suction zone undergoes a process of rapid readjustment within a transitional region. Beyond this region, the turbulence flow structures asymptotes toward an “equilibrium” region. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A12%281 [...]
in Journal of engineering mechanics > Vol. 133 N°11 (Novembre 2007) . - pp.1388–1393.
Titre : Turbulence characteristics of open-channel flow with bed suction Type de document : texte imprimé Auteurs : Xingwei Chen, Auteur ; Yee-Meng Chiew, Auteur Année de publication : 2007 Article en page(s) : pp.1388–1393. Note générale : Mécanique appliquée Langues : Anglais (eng) Mots-clés : Turbulence Suction Open channel flow Velocity profile Reynolds stress Résumé : The influence of bed suction on the characteristics of turbulent open channel flow is studied in a laboratory flume using a two-component laser Doppler velocimeter. The experimental results show how bed suction significantly affects the mean flow properties, turbulence levels, and Reynolds stress distributions. The data reveal the presence of a more negative vertical (downward) velocity. The results also show how the horizontal and vertical turbulence intensities and Reynolds shear stresses respond to suction. All these properties are found to reduce with increasing relative suctions: decreasing more rapidly around the bed region than that near the free surface. In the downstream direction, the flow structure in the suction zone undergoes a process of rapid readjustment within a transitional region. Beyond this region, the turbulence flow structures asymptotes toward an “equilibrium” region. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A12%281 [...] [article] Turbulence characteristics of open-channel flow with bed suction [texte imprimé] / Xingwei Chen, Auteur ; Yee-Meng Chiew, Auteur . - 2007 . - pp.1388–1393.
Mécanique appliquée
Langues : Anglais (eng)
in Journal of engineering mechanics > Vol. 133 N°11 (Novembre 2007) . - pp.1388–1393.
Mots-clés : Turbulence Suction Open channel flow Velocity profile Reynolds stress Résumé : The influence of bed suction on the characteristics of turbulent open channel flow is studied in a laboratory flume using a two-component laser Doppler velocimeter. The experimental results show how bed suction significantly affects the mean flow properties, turbulence levels, and Reynolds stress distributions. The data reveal the presence of a more negative vertical (downward) velocity. The results also show how the horizontal and vertical turbulence intensities and Reynolds shear stresses respond to suction. All these properties are found to reduce with increasing relative suctions: decreasing more rapidly around the bed region than that near the free surface. In the downstream direction, the flow structure in the suction zone undergoes a process of rapid readjustment within a transitional region. Beyond this region, the turbulence flow structures asymptotes toward an “equilibrium” region. ISSN : 0733-9399 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%290733-9399%282007%29133%3A12%281 [...]
