欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为准确模拟山区峡谷桥址处的三维紊流风场，以澧水大桥所在峡谷为工程背景，将现场实测风场用谐波合成法进行等效处理生成了满足峡谷风场特性的随机来流，然后基于对Fluent的二次开发，将生成的随机来流赋予大涡模拟的入口边界．通过对比本文方法和无脉动入口计算结果发现，本文方法更能体现山区峡谷风场的真实流态，最后在本文方法基础上对不同风向角作用下的山区峡谷桥址处风场进行了数值模拟，得到了峡谷桥址处风场的详细分布特性，可为山区峡谷地形紊流场精细化数值模拟提供参考．
英文摘要：
It is known that a reasonable three-dimensional fluctuating inlet boundary condition plays an important role in the accurate numerical simulation of wind field in the mountainous area. Taking Li Shui Bridge as the engineering background in this paper, the fluctuating wind field satisfying the characteristics of the wind field in the mountainous area was generated based on field measuring data processed by the weighted amplitude wave superposition （WAWS） method. The fluctuating velocity data was used for the inlet boundary of Large Eddy Simulation （LES） by the secondary development of the commercial software FLUENT. The comparison of the computational results from the proposed method and the method without considering fluctuating inlet boundary shows that the method developed in this paper can better reflect the actual flow field in the mountainous area. Finally, the wind field of the bridge in the mountainous area under different wind directions was simulated. It is found that the proposed method provides a reference for the refined simulation of the fluctuation wind field in mountainous area.
同期刊论文项目
同项目期刊论文
Experimental and Numerical Studies of Nonstationary Random Vibrations for a High-Pier Bridge under V
Fatigue Reliability Assessment for Long-Span Bridges under Combined Dynamic Loads from Winds and Veh
Wind Tunnel Study of a Sudden Change of Train Wind Loads due to the Wind Shielding Effects of Bridge
期刊信息
位置：