基于自航模的某海洋调查船回转性能数值研究

Numerical research and improvement measures on turning performance of an ocean survey ship based on self-propelled model

本文针对某海洋调查船在实船海试过程中出现回转横倾角过大问题,采用基于RANS方程的数值模拟技术结合自航模型对其回转性能进行数值模拟,获得了其回转性能预报结果,为了减小该船回转过程中的横倾角,对船底呆木开展改进设计,获得呆木改进设计方案后该船的回转性横倾。通过对比分析可知,改进方案有效降低了回转过程中的横倾角,避免了回转中横倾过大的问题,为该船的顺利交付提供了技术支撑。

This paper aims at the problem of excessive slant angle of an ocean survey ship during sea trial.The numerical simulation technology based on RANS equation combined with the self-propelled model was used to simulate its turning performance.The prediction results of its gyration performance were obtained.In order to reduce the ship's roll angle during turning,We improved the design of the wooden bottom,and the ship's turning roll after the improved wooden design is obtained,through comparative analysis,we know that the improved scheme can effectively reduce the roll angle during the rotary process,the problem of too much roll angle during turning is avoided which can provide technical support for the smooth delivery of the ship.