大跨桥梁风致振动的三维数值仿真  

Three Dimensional Numerical Simulation of Wind Induced Vibration for Long Span Bridges

作　　者：白瑜光[1] 孙东科[1,2] 林家浩[1] 

机构地区：[1]大连理工大学运载工程与力学学部,工业装备结构分析国家重点实验室,大连116023 [2]Vestas Technology, Newport, UK, PO30 5WZ

出　　处：《系统仿真学报》2012年第7期1381-1386,共6页Journal of System Simulation

基　　金：国家自然科学基金(10972048,90815023,50608012);教育部高等学校全国优秀博士论文专项资助(2002030)

摘　　要：基于计算流体动力学(CFD)方法,利用自有程序结合商业软件处理大跨桥梁风致振动中的流体-固体耦合问题,使用三维桥梁结构模型,进行大跨桥梁风致振动的数值仿真。仿真结果符合实际物理现象,并且所得到的结构气动参数同已有仿真方法的数值结果相比,与风洞试验结果更加接近。这些数值仿真表明,该计算流体动力学方法可以比较准确地进行大跨桥梁的气动特性分析,可以为大跨桥梁建设提供重要的设计基础。A novel computational fluid dynamic （CFD） method was proposed. Fluid-structure interaction problem was solved by self-developed codes combined with ANSYS software. Three dimensional CFD modelling was used to implement numerical simulation of wind induced vibration for long span bridges. The simulation flow fields are consistent to the actual physical phenomenon, and the computed aerodynamic parameters are much closer to the wind tunnel results than other simulation results. These numerical simulation results propose that the present CFD method can give accurate analysis of aerodynamic characteristics for long span bridges, and this method can be an important basis of the design of long span bridges.

关 键 词：大跨桥梁 CFD 流体-固体耦合 三维数值仿真 气动参数计算 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] V211.13[自动化与计算机技术—计算机科学与技术]