外海抛泥过程中悬浮泥沙扩散输移的数值模拟  

Numerical simulation of suspend sediment transportation during disposing of spoil off sea

作　　者：吴修广[1] 杨润伟 史英标[1] 黄世昌[1] 倪勇强[1] 

机构地区：[1]浙江省水利河口研究院,浙江杭州310020 [2]辽宁省葫芦岛市交通局,辽宁葫芦岛125000

出　　处：《海洋环境科学》2008年第3期236-241,共6页Marine Environmental Science

基　　金：国家自然科学基金项目(50379001);国家自然科学基金重点项目(10332050)

摘　　要：建立了平面2D潮流和增量悬沙输移扩散的数学模型,通过非结构网格的有限单元法离散求解。应用该模型对苍南电厂港池和航道疏浚物抛泥过程中悬沙扩散输移模拟,模拟结果与工程施工过程的监测结果吻合较好,数字化的再现了抛泥过程中悬沙的输移扩散机理,为苍南电厂港池和外航道疏浚物倾倒区选划和环境影响评价提供了依据。The planar 2D tide and increment suspend sediment numerical model were established and solved by finite-element method with the unstructured mesh, The model was applied to simulate the process of disposing of spoil from dredging up in the harbor basin and navigation in Cangnan Power Plant. The result showed the convection-diffusion mechanism of increased suspend sediment root of dredging up on computer and provided the evidence for the layout in the disposal area.

关 键 词：数值模拟 扩散输移 悬沙增量 抛泥 

分 类 号：U65[交通运输工程—港口、海岸及近海工程] O242.1[交通运输工程—船舶与海洋工程]