文章基本信息

标题：Flutter simulations on blunt bodies with different turbulence modelling
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作者：Yuguang Bai ; Sheng Zhang ; Xiaole Xu 等
期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2022
卷号：4
期号：3
页码：1274-1281
DOI：10.35629/5252-040310641068
语种：English
出版社：IJAEM JOURNAL
摘要：Fluid-structure interaction effects have influenced long-span structures significantly. Turbulence effects are also needed to be included. This paper presented series of numerical simulations of the flow around moving blunt bodies with different three dimensional (3D) turbulence models. A classical section of a long-span bridge and an inversed-U shaped beam section are presented with three dimensional CFD modelling and simulations. The fluid-structure interaction effect was solved based on Gauss-Seidel blockiterative coupling algorithm. Flutter derivatives of the two structures are computed and the turbulence flows around them wereanalyzed. Wind tunnel experiments were taken to valid numerical simulation results. It was seen from the computed results that 3D CFD simulations could identify flutter derivatives of long-span structures effectively. The hybrid RANS/LES modelis a good choice versus flutter simulations of blunt body structures with sharp edges. Also, turbulence modelling is necessary for wind effects.
关键词：long span structures;blunt body;flutter;turbulence modelling