铁山湾海域风暴潮的数值模拟

Numerical simulation of storm surge in Tieshan Bay

铁山湾海域风暴潮灾害频发,为研究该海域风暴潮特征,基于Delft 3D模型和Holland台风模型,建立了一个高分辨率的风暴潮数值计算模型。通过对1409号"威马逊"和1415号"海鸥"台风风暴潮进行模拟,验证了模型的精确性。计算结果表明,由于铁山湾是个半封闭的喇叭形状港湾,港湾内侧的增水值大于港湾外侧,"威马逊"台风引发的内侧最大增水值达到3.5m,因此应更加重视港湾内侧的防灾减灾工作;同时,铁山湾海域风暴潮对台风参数的变化较为敏感,台风强度越大、路径距离铁山湾越近,其产生的增水越大。

The storm surge disaster in Tieshan teristics of storm surge in this area, a high Bay is frequent. In order to study the characresolution numerical model was established based on Delft 3D hydrodynamic model and Holland typhoon model. The accuracy of the model was validated with the simulation of storm surge induced by typhoon ＂Rammasun＂ （1409） and ＂Kalmaegi＂（1415）.The result shows that the storm surge inside the bay is greater than outside because of the shape of Tieshan Bay which is like a semi-enclosed horn, the maximum value inside the bay reached 3.5m, so more attention should be paid to storm surge disasterprevention and mitigation work inside the bay. At the same time, the storm surge in Tieshan Bay is sensitive to the typhoon parameters, the greater the typhoon intensity and the closer the route to Tieshan Bay, the greater the set-up is.