摘要
本模式将抛泥扩散淤积分三步进行:(1)流场采用平面二维欧拉场;(2)用有限个质点代表"污水团",采用拉格郎日法计算质点漂移;(3)用恰当的泥沙公式模拟每个质点泥沙落淤。以此三种模式的组合描述抛泥扩散淤积状况。本模式可以给出"污水团"扩散漂移过程,模拟泥沙淤积范围和淤积厚度。通过对长江口北槽拟选倾倒区抛泥淤积模拟计算,结果与示踪沙现场试验状况基本吻合,说明本方法对抛泥淤积计算是一种值得深入研究的可行方法。
The method is comprised of three steps： firstly, Euler field was used to simulate the current field, secondly, several particles were set to represent ＂sewage mass＂ and the drift distance was determined by the lagarange equation; thirdly, choose suitable sediment equation to simulate the descending stage. The ＂sewage mass＂ diffusion, process and the silt area, and thickness were provided by the model. The result of the practice in the Yangtze river estuary was proved to be agreed with the outcome of trace-sand experiment, and it is hoped to be a feasible model for further study.
出处
《海洋通报》
CAS
CSCD
北大核心
2007年第6期91-95,共5页
Marine Science Bulletin
关键词
抛泥
扩散
淤积
质点
dumping
diffusion
silt
particle
