Advances in Numerical Bridge Aerodynamics and Recent Applications
Advances in Numerical Bridge Aerodynamics and Recent Applications
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数值桥梁空气动力学的进展和最新应用
DOI：
10.2749/101686605777963161
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发表时间：
2005
影响因子：
1.1
通讯作者：
G. Morgenthal
中科院分区：
文献类型：
--
作者：
G. Morgenthal
空气动力学方面是当今桥梁工程的主要设计因素。虽然风洞试验是评估桥面空气动力学行为的标准程序，但数值方法可以提供适当的补充，并提供对流动特性的进一步了解。在这里，二维涡粒子方法讨论作为一种手段来解决基本的Navier-Stokes方程数值。本文提出了一种新的粒子-网格混合算法，实现了高效的粒子速度计算。这允许大量的计算元素，从而以适度的计算成本进行高分辨率模拟。介绍了该程序在结构风工程领域中的应用。简要介绍的项目有：米洛高架桥，尼思河大桥和萨伏纽斯涡轮机。使用高水平的空间和时间分辨率。它的结论是，这样的计算可以提供重要的设计指导，通过快速通道气动试验。
Aerodynamic aspects are a major design factor in bridge engineering today. Whilst wind tunnel testing is the standard procedure for the assessment of the aerodynamic behaviour of bridge decks, numerical methods can provide a suitable supplement and offer further insight into flow properties. Here the two-dimensional Vortex Particle Method is discussed as a means to solve the underlying Navier-Stokes equations numerically. This well-known technique, which has been extensively used for the study of aeroelastic phenomena due to its flexibility and speed, has been extended to allow further improvements.A novel hybrid Particle-Mesh algorithm is developed which achieves a highly efficient particle velocity computation. This allows for a large number of computational elements and thus high-resolution simulations at modest computational cost. Applications of the computer code to problems in the field of wind engineering of structures are presented. Projects briefly described are: the Millau Viaduct, River Neath Bridge and a Savonius turbine. A high level of spatial and temporal resolution is used. It is concluded that such computations can provide important design guidance through fast-track aerodynamic testing.