桥梁主梁断面三分力系数的数值模拟研究

CFD方法相对于传统的风洞试验方法有着费用少、省时省力、良好的重复性等特点,其突出的优点是实现了流动的可视化。本文以苏通长江大桥为模型,对不同攻角下主梁断面的三分力系数进行了数值识别,并将数值识别结果与风洞试验值作了比较,验证了采用CFD技术识别桥梁三分力系数方法的可行性和可靠性。文中还给出了0°攻角下流场的速度和压强的等值线图和云图。

The CFD method is superior to the traditional wind tunnel test in many ways.Such as less cost,time-saving,good reproducibility etc.It s outstanding advantage is the realization of the flow visualization.In this paper,the author took Sutong yangtze river as a model ,studied the three-component coefficient of the bridge with CFD method in different angle of attack.The author also identified the feasibility and reliability of the CFD method by comparing the results of the Numerical Simulation and the tunnel te...