珠江口虎门小尺度动力结构及凫洲水道对其影响的数值研究

Small-scale Structure of Humen Estuary of the Pearl River and Numerical Model of the Impact from Fuzhou Channel

应用Ecomsed模式,对黄埔-内伶仃区域采用曲线网格技术,从动力机制上分析珠江口虎门小尺度动力结构,结果表明:虎门上、下游呈现双向、不对称射流体系;凫洲水道的西侧注入射流体,严重影响着虎门的动力、沉积系统;落潮时,高浓度的悬浮泥沙通过凫洲水道,绕过鸡抱沙向东南呈舌状注入伶仃洋。

The small-scale structure of Humen esturary of the Pearl River was dynamically analyzed by using ecomsed model and curvilinear grid technology. The results show that there is bi-orientation asymmetry jet system in the upriver and downriver of the Humen estuary. During ebbing, high concentration suspended sands pass through the Fuzhou channel and injects a tongue-like plume into the Lingding ocean bypass Jibaosha. The effluent injected from the western part of the Fuzhou channel makes a notable impact on dynamic and depositional system of the Humen estuary.