水东湾近岸海域双向射流系统初步研究

 基于环境流体动力学数值模型模拟了水东湾动力场，探讨了沙坝-澙湖型潮汐汊道地貌结构下的双向射流体特征，模拟结果表明：落潮射流体受东侧岸线束缚，发育不对称，西侧自由发展，东侧表现为附壁射流；涨潮射流体西侧发育附壁射流，东侧边界基本不受地形影响，为自由射流。澙湖及通道内余流均指向口外，通道外余流则表现出中间落潮优势带与两侧涨潮优势带的复合结构。在通道两侧存在一对反向的环流结构，东侧发育微弱的逆时针环流，西侧发育强劲的顺时针环流。

Preliminary Study on the Bi-directional Jet System of Coastal Waters in the Shuidong Lagoon

The Environmental Fluid Dynamics Code numerical model is used to simulate the hydrodynamic field of coastal waters in the Shuidong Lagoon. The results show that the ebb flow is bounded by eastern shoreline and develops asymmetryly. The west ebb flow is unaffected by topography and grows freely. The east jet shows wall attached jet properties. Residual currents in the Shuidong Bay and tidal inlet are seawards. Residual currents out of inlet show a compound structure, with the ebb flow in the middle zone and the flood flow in lateral zones. A pair of circulations in adverse directions exist on both sides of the channel, with a weak anti clockwise circulation in the east channel and a strong clockwise circulation in the west.