波浪中非流线型浮体运动的动网格分析研究

DYNAMIC MESH STUDY OF MOTION OF NON-STREAMLINED FLOATING BODY IN WAVES

使用Fluent软件,利用推板造波法和阻尼消波法建立数值波浪水池,用VOF方法追踪自由表面,采用RNG k-ε两方程湍流模型,基于动网格技术和用户自定义函数,提出一种模拟波浪中非流线型浮体运动的数值方法。应用该方法模拟波浪中二维非流线型浮体的大幅运动,将得到的运动响应曲线与实验值比较,分析误差产生原因,证明该方法的准确性,为浮力超常建造过程中的精度控制提供依据。

Building huge marine working platforms has faced two problems which are special construction conditions and launching difficulties. In order to solve these problems, building SEVAN 650 huge marine working platform used a non- traditional floating shipbuilding method which uses a floating substrate to build the platform layer by layer without using berth and dock. To control the construction accuracy, the motion of the studied. A method of sim software. The piston wave ulating making the motion of non-streamlined floating non-streamlined floating substrate should be body in waves was proposed by using Fluent method and damping wave absorption method were used for setting up numerical wave tank, VOF method for tracking free surface, RNG k - e equation for turbulence model. The numerical method simulating the motion of non-streamlined floating body in waves was proposed based on dynamic mesh and user defined functions. The novel method was used to simulate large scale motion of 2D non-streamlined floating body in waves. The motion picture response curve was compared with experiment value, the cause of errors was analyzed. The results prove the accuracy of the method and provide the basis for precision control in the construction process of extraordinary buoyancy.