内河航道挖槽立面二维水沙数学模型研究  

Vertical 2-D water and sediment mathematical model of dredged channel

作　　者：吴腾[1] 吴玲莉[1] 丁飞[1] 

机构地区：[1]河海大学港口海岸与近海工程学院,南京210098

出　　处：《水道港口》2013年第1期45-49,共5页Journal of Waterway and Harbor

基　　金：国家自然科学基金重点项目(51039003);武汉大学水资源与水电工程科学国家重点实验室开放基金(2011B085)

摘　　要：文章采用有限体积法建立了航道挖槽立面二维水沙数学模型,以分析挖槽后航道的冲淤变化。该模型引入了压强修正值,克服了因挖槽断面形态变化引起的流速剧烈变化带来的模拟困难;同时采用了动网格技术,使计算区域随流动区域的变化而改变,较好模拟了自由表面和含沙量的变化。为检验模型的可靠性,采用了试验资料进行验证,模型计算结果与试验数据符合较好。A vertical 2-D numerical model studying on the sediment deposition and flow distribution was established in this paper. In this model, the hydrodynamic pressure was taken into account, which could decrease the simulation difficulty of acutely variable velocity caused by channel sections variation. On the other hand, the auto-mesh technique was adopted, and the calculating region could alter with the flow region. To verify the reliability of the model, experimental datum was adopted in the paper. The calculating results are consistent with the experimental datum.

关 键 词：航道 数值模型 立面二维数学模型 压强 

分 类 号：U617[交通运输工程—船舶及航道工程] O242.1[交通运输工程—船舶与海洋工程]