ENE向大风对黄骅港海域三维流场影响的模拟分析

Numerical Simulation and Analysis of Effect by ENE Strong Wind on 3D Tidal Flow in the Huanghua Harbor

使用DELF3D-FLOW模型模拟了ENE向8级大风作用下黄骅港海域的三维潮流场,并和无风作用时的潮流场进行比较分析。结果表明:大风作用时黄骅港近海海域出现明显的增水现象;大风对黄骅港行道附近涨潮流的增大作用并不明显,而对落潮流的减小作用很显著,潮流动力失衡可能导致黄骅港近岸泥沙含量较高;沿堤流及沿岸流作用加强。这些现象的综合作用,可能是港口及航道产生骤淤的原因。

With the application of Delft3D-Flow model, the Huanghua Harbor 3D tidal current fields under the action of ENE wind of scale 8 are simulated and compared with the tidal current fields without wind action. The numerical results show that： When there is strong wind, water level setting up appears obviously in this sea area; The minishing effect of wind on flood tide current is not obvious, but the aggrandizement effect of wind on ebb tide current is notable, this disproportion between flood and ebb tide current may result in high sediment concentration in coastal area; The currents along the breakwaters and bank is enhanced. The conjunctive action of these factors may lead to siltation in the basin and navigation channel of the Huanghua Harbor.