中山大学学报自然科学版 ›› 2011, Vol. 50 ›› Issue (2): 116-119.

• 研究论文 • 上一篇    下一篇

水东湾近岸海域双向射流系统初步研究

杨留柱1,2,刘宏坤1,任 杰1,喻丰华2

  

  1. (1.中山大学近岸海洋研究中心,广东 广州 510275;2.珠江水利科学研究院,广东 广州 510611)
  • 收稿日期:2010-03-11 修回日期:1900-01-01 出版日期:2011-03-25 发布日期:2011-03-25
  • 通讯作者: 任杰

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

YANG Liuzhu1,2,LIU Hongkun1, REN Jie1,YU Fenghua2

  

  1. (1. Coastal Ocean Research Center, Sun Yatsen University,Guangzhou 510275,China;2. Pearl River Water Resources Scientific Research Institute,Guangzhou 510611,China)
  • Received:2010-03-11 Revised:1900-01-01 Online:2011-03-25 Published:2011-03-25

摘要: 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。

关键词: 潮汐汊道, 水东湾, 双向射流, 余流

Abstract:

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.

Key words: tidal inlet, Shuidong lagoon, bidirection jet, residual current

中图分类号: