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本文以辽宁省兴城市曹庄海域潮滩为例,利用MIKE21建立该潮滩的二维水动力模型,在验证海域稳定深槽的潮位、潮流(流速、流向)基础上,对潮滩淹没过程的瞬时水边线和滩面潮流(流速、流向)进行验证,并分析潮汐特征及强风对潮滩水动力数值模型计算结果的影响。结果表明,该潮滩大、小潮均可实现淹没,每个周日滩面(0.5 m以上)淹没时间的平均值为5.8 h;滩面流场极为复杂,高潮时滩面流速达到最大值,普遍为30~40 cm/s且流向基本平行岸线;6~7强风条件对计算流场有较大的影响,1#、2#测站的计算流速较无风条件下增大43.8%和29.5%。
Taking the tidal flat of Caozhuang sea area in Xingcheng City of Liaoning Province as an example, a two-dimensional hydrodynamic model of the tidal flat was established by MIKE21. Based on the verification of tidal level and tidal current (velocity and flow direction) Instantaneous waterfront and tidal current (flow velocity and flow direction) are verified. The influence of tidal characteristics and strong wind on the calculation results of hydrodynamic numerical model for tidal flat is analyzed. The results show that both the large and small tidal flats of the tidal flat can be submerged, and the average flooding time of the tidal flat (0.5 m or above) on each Sunday is 5.8 h. The flow field of the tidal flat is extremely complicated, and the flow velocity of the tidal flat reaches the maximum at high tide. Generally 30 ~ 40 cm / s and flow to the basic parallel shoreline; 6 ~ 7 strong wind conditions have a greater impact on the calculated flow field, the calculated flow rate of 1 #, 2 # stations increased 43.8% 29.5%.