Three-dimensional numerical simulation of Zhoushan area

QIN Hua-wei1，CAI Zhen1，ZHOU Hong-wei2，HU Hang-min1

（1. School of Mechanical Engineering，Hangzhou Dianzi University，Hangzhou 310018，China；

2. Key Laboratory Submarine Geosciences，The Second Institute of Oceanography，SOA，Hangzhou 310012，China）

Abstract：Zhoushan area is the only way of changjiang runoff，which flow from north to south. The hydrodynamic condition of this sea area is affected by the changjiang runoff，the power flow of Hangzhou Bay-the east china sea and complex terrain，which is particular and significant. Aiming at the shortage of simulation for specific sea area，the research on the southern part of the Zhoushan island to the Ningbo Chuanshan peninsula was carried out. The three-dimensional structure grid was established，combined with the practical data of flow rate by ADCP experiment，the flow model of this sea area was obtained by conducting a numerical simulation by using Fluent. On

the basis of these experiments，the sea area with large velocity was analyzed. The results show that，when raising tide，the maximum velocity of Luotou channel，which is 1.6 m/s~2.1 m/s，is present in the south of Zhaoluoshan Island and Xiaomao Island；the maximum velocity，which is 1.5 m/s~2.1 m/s when ebbing tide，is present to export boundary on the north side of Ningbo Chuanshan peninsula and the east of Zhoushan Island，the return flows are discovered in the Ningbo Chuanshan peninsula. The obtained data is identical with measured data，the model has a certain reference value for engineering application.