海州湾是我国最大的紫菜筏式养殖基地.采用数值模拟方法研究了养殖浮筏对海州湾水动力条件和水交换能力的影响.首先,利用基于有限体积的海洋数值模式(FVCOM)建立了海州湾水动力模型,并在模型中引入考虑浮筏影响的双阻力模型,对海州湾海域的水动力场、纳潮量和水交换能力进行了模拟.结果表明,养殖浮筏严重削弱了海湾内水动力场,使养殖区域的海表流速降低10％～50％;纳潮量减少,最大减少了 0.21×108m3;海水半交换周期延长了 16个潮周期,平均半交换时间延长了 20％,表明海湾内养殖浮筏的存在降低了水交换能力.最后,通过数值实验,探讨了在养殖浮筏区设置水流通道对提高海湾水交换能力的贡献.“,”Haizhou Bay is the largest raft culturing base of laver in China.A numerical simulation is conducted to study the effect of culturing floating rafts on the hydrodynamic conditions and water exchanged capacity of Haizhou Bay.A hydrodynamic model of Haizhou Bay is developed using the Finite Volume Coastal Ocean Model(FVCOM)and a dual-drag model considering the influ-ence of floating rafts is introduced to the hydrodynamic model.The hydrodynamic field,tide volume,and water exchange capaci-ty of Haizhou Bay area are simulated.The results show that,in the bay,floating rafts severely attenuate the hydrodynamic field,reduce the surface velocity in the cultured area by 10％-50％,and decrease the tide volume,with a maximum decrease of 0.21×108 m3.Furthermore,the semi-exchange period of seawater is extended by 16 tidal periods,and the average semi-ex-change time is extended by 20％,demonstrating that the existence of culturing floating rafts in the bay weakens its water exchange capacity.Finally,through numerical experiments,the contribution of setting up waterways in the cultured floating raft area to im-prove the water exchange capacity of the bay is discussed.