旅顺新港旅游休闲区波浪数值模拟研究

摘要

工程海域的波浪条件是港口规划设计中需要考虑的首要因素.针对旅顺新港旅游港区扩建预案,应用水动力学软件MIKE21的SW和BW数学模型对防波堤建设前后工程海域的波浪场进行数值模拟.根据工程区域水深及地形变化特点,采用远场大区域推算与近场小区域精细模拟相结合的方法,计算了拟建水工建筑物的设计波浪要素及港内波况.结果表明:工程受NW和NNW方向波浪影响较大,当重现期为50 a时,外护岸、防波堤和泊位处的有效波高分别为4.74 m、5.66 m和1.10 m;若在防波堤和外护岸西侧增加一条垂直于NW方向的潜堤,外护岸、防波堤和泊位处的有效波高分别降至3.43m、3.79 m和0.75 m.%Wave condition in project area is a primary factor of harbor design.In the expansion project of Lushun new harbor,a hydrodynamic model MIKE21 was applied to simulate the wave field before and after the breakwater construction.According to characteristics of water depths and geography in the project area,both far field and near field analytical methods were adopted to calculate the design wave parameters of proposed marine structures and wave conditions in harbor.The results show that:waves in both NW and NNW directions have greater influence,while the significant wave heights outside the revetment and the breakwater are 4.74 m and 5.66 m as well as 1.10 m at berth;if there is a submerged breakwater built perpendicularly to NW direction,the significant wave heights at revetment,breakwater and berth can be reduced to 3.43 m,3.79 m and 0.75 m.