感潮河段桥墩影响评价的高精度二维模拟

High Accuracy Two-Dimensional Simulation of the Influence Evaluation of Pier for Tidal River Section

在以数学模型对桥墩结构和河道进行网格概化处理中,模型的概化精度、网格与桥墩轮廓的贴合程度都对模型计算效率和成果造成影响。本文采用SMS软件对模型网格进行前处理,并利用MIKE21水动力模型分析了桥墩建设对河道水流的影响。结果表明,经过处理后的模型网格能够更好地贴合桥墩轮廓,模型计算成果可以全面地反映桥墩局部区域的水位和流场的变化情况。

In the grid generalization of pier structure and river channel by mathematical model,the generalization accuracy of model and the fit degree of grid and pier profile all affect the computational efficiency and results of the model.In this paper,SMS software is used to pre-process the model grid and MIKE21 hydrodynamic model is used to analyze the influence of pier construction on river flow.The results show that the model grid after processing can better fit the pier profile,and the model calculation results can fully reflect the changes of water level and flow field in the local area of the pier.