波浪中两个浮体水动力相互作用的数值计算

  目的  船舶在并行补给过程中不仅受风浪的影响，还受两船间水动力的相互干扰，会产生比单船运动更强烈的摇荡运动。为研究补给过程中船舶的耐波性，  方法  利用商用水动力学软件AQWA求取补给船与接收船摇荡运动的RAO函数，根据频域的计算结果进行不规则波下的响应幅值预报与时域分析，并采用相关函数的方法求得时域下的有义值。经与谱分析结果进行的比较，发现两者吻合较好。
  结果  研究结果表明，两船间的水动力干扰对补给过程影响较大。  结论  所得结果可以避免补给过程中发生危险状况，确保补给作业安全。

Hydrodynamic interactions be-tween two ships advancing in waves

Due to the wave and hydrodynamic interaction between two ships advancing parallel on the ocean, their six-degrees-of-freedom motions are much more complex during replenishment. The seakeeping performance of two vessels is analyzed with AQWA. On the basis of the RAO functions of the two parallel vessels, spectrum analysis and time-domain analysis were carried out, and the significant amplitudes were obtained using the computed time-history and correlation function method.
The significant amplitudes are compared with the results of the spectrum analysis and good agreement is observed. It is found that hydrodynamic interaction between two ships has a great impact on the process of replenishment. Depending on the results of the analysis, dangerous conditions during the replenishment process could be avoided, thereby ensuring the safety of supply work.