克孜河渡槽风荷载数值模拟

为了探究风荷载对克孜河渡槽结构的影响，考虑到经济成本和时间成本，采用数值模拟进行研究。本文基于流体力学CFD理论，利用Midas NFX CFD软件研究克孜河渡槽的风场环境及风荷载响应,模拟不同风攻角条件下风荷载对渡槽的影响，通过与已有的风洞试验结果对比分析，来验证数值模拟结果的可靠性，深入剖析了风攻角变化对渡槽的影响，并采用数值模拟与单因素方差分析相结合的方法，验证了风攻角变化对渡槽三分力系数的影响。计算结果显示风攻角对三分力系数有显著影响，以及数值模拟可以快速高效的模拟出克孜河渡槽周围复杂的风场环境，能直观反映渡槽表面负压区的分布规律，研究成果对渡槽风荷载的结构设计具有一定的参考意义。

Numerical simulation of wind load in Kezi River aqueduct

In order to explore the influence of wind load on the structure of Kezi River aqueduct, considering the economic cost and time cost, numerical simulation is used to study. Based on the CFD theory of fluid mechanics, this paper uses Midas NFX CFD software to study the wind field environment and wind load response of the Kezi River aqueduct, and simulates the influence of wind load on the aqueduct under different wind attack angles. By comparing with the existing wind tunnel test results, the reliability of the numerical simulation results is verified, and the influence of the change of wind attack angle on the aqueduct is deeply analyzed. The influence of the change of wind attack angle on the three-component force coefficient of the aqueduct is verified by the combination of numerical simulation and single factor variance analysis. The calculation results show that the wind attack angle has a significant effect on the three-component force coefficient, and the numerical simulation can quickly and efficiently simulate the complex wind field environment around the Kezi River aqueduct, and can intuitively reflect the distribution law of the negative pressure area on the surface of the aqueduct. The research results have certain reference significance for the structural design of the aqueduct wind load.