基于三维势流理论的深远海养殖工船耐波性能分析

Seakeeping performance analysis of deep-sea aquaculture platform based on the three-dimensional potential flow theory

深远海养殖工船是典型的具有自航能力、长期系泊在固定海域作业的工程船舶。由于作业工况的多样性,养殖工船的耐波性能分析比普通船舶更为复杂。以养殖工船实际设计项目为依托,基于三维势流理论,分别对养殖工船自航工况及系泊作业工况下的耐波性能进行研究,继而结合对频域和时域的仿真分析,以人员安全、设备安全及养殖安全为指标,对养殖工船耐波性能进行评价。结果显示:在1~5级海况下船体耐波性能表现良好,可以有效保证各项安全指标,在6级海况下,船舶的摇摆角度超出限值,此时应通过运营管理或加装减摇装置进行处理。初步构建了系统的养殖工船耐波性能分析方法及评价体系,可为其他养殖工船项目耐波性能的设计及优化提供参考。

The deep-sea aquaculture platform is a typical engineering ship with self-propelled capability and long-term mooring in fixed sea areas.Due to the diversity of working conditions,the analysis of seakeeping performance of the aquaculture platform is more complicated than that of the common ships.Based on the actual design project of aquaculture platform,this paper studies the seakeeping performance of aquaculture platform under self-propelled and mooring working conditions according to the three-dimensional potential flow theory,and then combines with the simulation analysis of frequency and time domain to evaluate the aquaculture platform’s seakeeping performance with personnel safety,equipment safety and aquaculture safety as indicators.The results show that the ship’s seakeeping performance is good under the sea states 1 to 5,which can effectively ensure the safety indicators.Under the sea state 6,the ship’s sway angle exceeds the limit,at which time it can be handled by operation management or installation of anti-rolling device.This paper preliminarily builds a systematic seakeeping performance analysis method and evaluation system of aquaculture platform,which can provide a reference for the seakeeping performance design and optimization of other aquaculture platform project.