伶仃洋海区二维不平衡非均匀输沙数学模型  

2-D numerical modeling on sediment transport of Lingdingyang sea area in Zhujiang River estuary

作　　者：徐峰俊[1] 刘俊勇[1] 

机构地区：[1]水利部珠江水利委员会科学研究所,广东广州510611

出　　处：《水利学报》2003年第7期16-21,29,共7页Journal of Hydraulic Engineering

摘　　要：采用贴体正交曲线坐标下的水流运动方程及悬移质平衡输移方程等建立了伶仃洋海区二维不平衡非均匀输沙模型。其中泥沙输移的非均匀性采用分组粒径法来模拟,根据实测的泥沙级配资料,模型将泥沙分13组。针对河口泥沙双向交换的特点,对泥沙冲淤函数作了改进。并采用最新的实测地形资料和洪、枯两组水文组合条件对伶仃洋海区主要水文站点的实测资料进行验证,其水流、泥沙运动验证精度基本都能达到规范要求,海区含沙量分布与遥感图十分相似。A 2D numerical model for nonequilibrium nonnuiform sediment transport of Lindingyang sea area is established in fitting curve coordinate system based on flow equation and equilibrium transport equation of suspension.The uniformity of the sediment is simulated by means of fractionalgrain method and being divided into 13 sets according to grain diameter.The sediment erosion functuion is modified according to the situation of bidirectional movement.The validity of the model is verified by the latest topographic and hydrologic data.

关 键 词：伶仃洋 二维水沙数学模型 分组粒径 冲淤函数 

分 类 号：TV149[水利工程—水力学及河流动力学]