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Analysis of reynolds number effects on bridge deck sections by the PSE method / Suzhe Yang in European journal of environmental and civil engineering, Vol. 15 N° 1 (Janvier 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 1 (Janvier 2011) . - pp. 99-124 Titre : Analysis of reynolds number effects on bridge deck sections by the PSE method Type de document : texte imprimé Auteurs : Suzhe Yang, Auteur ; Christian Crémona, Auteur ; Zhiyong Zhou, Auteur Année de publication : 2011 Article en page(s) : pp. 99-124 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : PSE  Vortex  methods  Reynolds  Strouhal  Bridge  deck  cross-sections Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Reynolds numbers play an important role in fluid dynamics, because flow separations and reattachments are often Reynolds-number dependent, even if the bodies have sharp edges. To satisfy Reynolds scaling in experiments, the model scale can be very large. Computational fluid dynamics (CFD) provides an interesting alternative to wind tunnel tests, especially when Reynolds effects have to be assessed for a design stage. In this paper, the particle strength exchange (PSE) of vortex methods is introduced for assessing Reynolds number effects on bridge deck cross-sections. For this purpose, this study analyses how the aerodynamic forces of two different bridges sections are influenced by these effects. The computation results with PSE are compared with wind tunnel tests. The relation between Strouhal numbers and Reynolds numbers are also analyzed and compared with experimental results. All the results show that the particle strength exchange method can be efficiently used to calculate Reynolds effects on 2-dimensional bridge deck sections. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=15666 [article] Analysis of reynolds number effects on bridge deck sections by the PSE method [texte imprimé] / Suzhe Yang, Auteur ; Christian Crémona, Auteur ; Zhiyong Zhou, Auteur . - 2011 . - pp. 99-124. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 1 (Janvier 2011) . - pp. 99-124 Mots-clés : PSE  Vortex  methods  Reynolds  Strouhal  Bridge  deck  cross-sections Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Reynolds numbers play an important role in fluid dynamics, because flow separations and reattachments are often Reynolds-number dependent, even if the bodies have sharp edges. To satisfy Reynolds scaling in experiments, the model scale can be very large. Computational fluid dynamics (CFD) provides an interesting alternative to wind tunnel tests, especially when Reynolds effects have to be assessed for a design stage. In this paper, the particle strength exchange (PSE) of vortex methods is introduced for assessing Reynolds number effects on bridge deck cross-sections. For this purpose, this study analyses how the aerodynamic forces of two different bridges sections are influenced by these effects. The computation results with PSE are compared with wind tunnel tests. The relation between Strouhal numbers and Reynolds numbers are also analyzed and compared with experimental results. All the results show that the particle strength exchange method can be efficiently used to calculate Reynolds effects on 2-dimensional bridge deck sections. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=15666