潮汐河口概化感潮河段的数值模拟试验

Numerical Simulation of Generalized Tidal Reach of Trend-type Estuary

为解决潮汐河口水动力数值模拟中常见的模拟困难问题,以珠江黄茅海河口和崖门水道为例,采用Delft3D二维水动力模块进行数值模拟试验,在仅考虑其基本纳潮特性条件下,概化崖门上游感潮河道,模拟黄茅海河口和崖门水道的水动力过程,并与实测数据进行对比分析。结果表明,在潮汐河口水动力数值模拟中,当缺乏上游感潮河道实测资料,或为节省资源而缩减计算范围而导致无法将实际潮区边界作为上游边界时,概化方法可为解决其相关模拟困难问题提供参考。

In order to solve the common problems of hydrodynamic numerical simulation of tidal estuary,taking Huangmao estuaries and Yamen waterway of Pearl River in Guangdong Province for examples,two-dimensional hydrodynamic module of Delft3 Dsoftware is applied to simulate hydrodynamic processes.Based on only considering the basic characteristics of tide,the upstream of the tidal river of Yamen is generalized and the hydrodynamic processes of Huangmao estuaries and Yamen waterway are simulated.The simulated results are compared with the measured data.The results show that because of lacking of the measured data of the upstream of tidal rivers or reducing calculation range to save resources,the actual tidal boundary can not be as the upstream boundary.So.the generalized method can provide valuable reference for solving the related difficult problems of simulation.