黄海辐射沙洲形成发育潮流数学模型  

Tidal Current Numerical Model for the Formation and Development of Radial Sandbank in the Yellow Sea

作　　者：诸裕良[1] 严以新[1] 薛鸿超[1] 

机构地区：[1]河海大学海岸及海洋工程研究所,南京210098

出　　处：《水动力学研究与进展（A辑）》1998年第4期473-480,共8页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金重点资助项目(批准号:49236120)

摘　　要：本文利用欧拉-拉格朗日观点,提出了一种改进型双步全隐有限差分方法.提高了数值计算精度,并建立了黄海辐射沙洲海域长时间序列潮流数学模型。论文以数学模型为研究手段,应用T.Off的潮流沙脊学理论,对辐射沙洲海域潮流运动力特征进行多目标分析和研究,初步揭示了潮流是形成发育黄海辐射沙洲的主要动力因素,潮能率、潮流流速分布的不同决定了辐射沙洲南北沙脊、深槽平面形态分布的不同。This paper develops a new double-sweep-implicit difference model with an Eulerian-Lagrangian method. This model is more accurate and is used to simulate the long-time tidal current in the radial sandbank area in the Yellow Sea. Based on the T. Off principle of tidal current ridges, the multi-purpose analysis on tidal current is carried out in this paper. It is shown that the tidal current is major dynamic factor for the formation and develpment of the radial sandbank. and the difference of tidal wave energy rate and current strength causes the different plane shapes of ridges and trough in this area.

关 键 词：辐射沙洲 潮流沙脊 往复潮流 海岸 数学模型 

分 类 号：TV148[水利工程—水力学及河流动力学]