海上半潜式风力发电塔基础的水动力学特性分析

On Hydrodynamic Characteristics of the Foundation of Offshore Semi-submersible Type of Wind Power Tower

提出一种强度与流场分析相结合的方法,利用Solidworks软件对半潜式基础进行建模及应力分析,并进行模态分析,比较不同频率之间振型,得出振动特性,利用FLUENT软件单向耦合分析法进行速度场和压力场数值模拟及水动力学特性分析。结果表明,横梁三角形各个角度的流场和阻力特性变化呈非线性关系,影响流速大小,进而对于侧向流及漩涡的形成产生影响,并且侧向流越大,越容易形成漩涡。

For the semi-submersible foundation of offshore wind power tower, the stress and hydrodynamic characteristics were studied numerically. In Solidworks, the structural model was built up to carry out the stress and modal analysis. The vibration modes of different frequencies were compared to study its vibration characteristics. In FLUENT, the velocity field and pressure field were simulated numerically to study the hydrodynamic characteristics. The results showed that the angle of the cross beam triangle has a certain nonlinear influence on the flow velocity and the resistance, as well as the formation of lateral flow and the vortex; and the larger the lateral flow is, the more easily a whirlpool forms.