A setup of a two-dimensional hydrodynamic model based on Delft3D modeling system for the coastal waters of Jeddah is described. Sensitivity tests of both numerical and physical parameters defined in the model and validation of the numerical model are also described. The model was forced by major tidal constituents along the open boundary. The performance of the model was evaluated using available water level observations at four sites along Jeddah coast. The simulated tidal elevations showed a very good matching with the observed tidal elevations. The spring and neap tidal cycle are reproduced by the model with good degree. Statistical analysis showed that RMSD error ranges between 0.001 and 0.17 m, while the MAD values vary between 0.02 and 0.08 m. Comparison of simulated and observed amplitudes and phases of the main tidal components also showed a good agreement. The predicted tide-induced current flooding and ebbing features during spring and neap tides were analyzed. The model suggests that the flow in the region is weak where the strengths of the currents increase towards the shallow areas.

描述了基于 Delft3D 建模系统的吉达沿海水域二维流体动力学模型的设置。还描述了模型中定义的数值和物理参数的敏感性测试以及数值模型的验证。该模型是由沿开放边界的主要潮汐成分推动的。使用吉达海岸四个地点的可用水位观测来评估模型的性能。模拟的潮汐高度与观测到的潮汐高度非常吻合。春季和小潮周期由模型很好地再现。统计分析表明，RMSD 误差在 0.001 到 0.17 m 之间，而 MAD 值在 0.02 到 0.08 m 之间变化。模拟和观测到的主要潮汐分量的振幅和相位的比较也显示出良好的一致性。分析了预测的春季和小潮期间潮汐引起的洪水和退潮特征。该模型表明，该区域的流动较弱，流向浅水区域的强度增加。