本文基于FVCOM(Finite-Volume Community Ocean Model)环流模型和海浪模型建立了波流耦合三维水动力数学模型,开展了舟山群岛海域波流水动力特性研究.研究结果表明:舟山群岛外海海域为旋转流,近海海域潮流基本呈现往复流特征,舟山群岛大部分区域落潮流强于涨潮流;垂向流速分布中底层流速约为表层流速的59％～70％;大潮期间有效波高大于小潮期间有效波高,从外海到近岸区域,有效波高逐渐减小;波浪对潮流流速影响与水深相关,水深较小的近岸区域流速受波浪影响最大.
Numerical investigation of the hydrodynamic characteristics in Zhoushan sea area based on wave-current coupling model
Three-dimensional wave-current coupling numerical model was established based on the FV-COM(Finite-Volume Community Ocean Model)circulation model and wave model.Numerical simula-tion on the hydrodynamic environment characteristics of Zhoushan island sea area was performed.The tidal current and wave characteristics of Zhoushan island sea area were mainly investigated.The results showed that the reciprocating current was dominate in the nearshore area and the rotating current was dominant in the offshore area of Zhoushan islands.The ebb tide was stronger than the flood tide in most areas of the Zhoushan islands.The vertical current velocity in the bottom layer was about 59％～70％of that in the surface layer.The significant wave height during the spring tide was higher than that during the neap tide,and the significant wave height gradually decreased from the offshore to near-shore area.The effect of wave on the tidal current velocity was related to the water depth,where the current velocity in the nearshore area at small water depth was mostly affected by waves.
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