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利用三维非静力能量闭合(E—ε)的边界层模式,以深圳海岸复杂地形进行了实际模拟,结果给出了该地区海陆风情形下气流和湍流的变化特征。在海风发展盛期,气流方向由大面积的水域和内陆的位置决定,不规则海岸线对局地气流影响不大;夜间防风时,不规则海岸线对局地气流影响较大。湍流能量高值分布在陆地上空的不稳定居内,水面上湍能很小。模拟结果与实测结果相比较吻合。
The three-dimensional non-static energy closure (E-ε) boundary layer model was used to simulate the complex terrain of Shenzhen coast. The results show the characteristics of the airflow and turbulence in the land-sea breeze situation. During the development of the sea breeze, the direction of airstream is determined by the large area of water and inland locations. The irregular coastline has little effect on the local airflow. When the wind is windy at night, the irregular coastline has a great influence on the local airflow. The high turbulence energy is distributed in the unstable place above the land, and the turbulence on the water surface is very small. The simulation results are in good agreement with the measured results.