两船并行横向补给频域运动分析  

Frequency domain analysis of alongside replenishment motion of two ships sailing in parallel

作　　者：张世云 杨晓蓉 宋琳 于双[4] ZHANG Shiyun;YANG Xiaorong;SONG Lin;YU Shuang(Naval Logistics Academy,Tianjin 300450,China;Tianjin Ren′ai College,Tianjin 301636,China;Tianjin Univ.,Tianjin 300072,China;Army Military Transportation Univ.,Tianjin 300161,China)

机构地区：[1]海军勤务学院,天津300450 [2]天津仁爱学院,天津301636 [3]天津大学,天津300072 [4]陆军军事交通学院,天津300161

出　　处：《海军工程大学学报》2023年第4期76-81,共6页Journal of Naval University of Engineering

摘　　要：海上横向补给时,两船(或多船)在有限间距范围内同速、同向航行,两船内侧的流场会发生干扰,影响两船的运动响应和波浪载荷。为此,以补给船吨位48000 t、接收船吨位65000 t为例,计算海况为四、五、六级海况,补给系统考虑为恒张力索,采用ANSYS/AQWA进行双船并行水动力耦合分析,基于JONSWAP谱计算不规则波作用下不同航速、不同间距、不同浪向时补给船与接收船升沉、横摇运动响应。分析计算结果发现:由于两船吨位较大,特征尺度较大,其运动特性较为稳定,对于浪向、航速以及间距均不敏感,但海况对于两船的运动影响较大,应避免在六级海况条件下进行作业。最后,对大吨位补给船和接收船的横向补给作业条件给出建议。In the case of offshore alongside replenishment,two ships(or multiple ships)are required to sail at the same speed in the same direction with limited spacing.The flow field generated on the inside of the two ships will interfere with each other,thereby affecting the motion response and wave load.Herein,the hydrodynamic coupling analysis was performed on the two ships sailing in parallel using ANSYS/AQWA,given that the tonnage of the replenishment ship and the receiving ship was fixed at 48000 t and 65000 t,respectively.The calculated sea state was level 4,5 and 6.The tension was considered constant in the replenishment system.The effects of sailing speed,sailing spacing and wave directions on the yaw,roll and pitch motion responses of both the replenishment ship and recei-ving ship were investigated based on JONSWAP spectra,when the irregular waves were applied.The results show that these two ships exhibit good motion stability and are insensitive to the wave direction,sailing speed and sailing spacing,due to their large tonnage and characteristic scale.However,the sea condition has great influence on the motion of the two ships.Therefore,the operation under the condition of six-stage should be avoided.Finally,useful suggestions on the alongside replenishment operation conditions for the replenishment ships and receiving ships with large tonnage were put forward.

关 键 词：并行横向补给 不规则波 水动力耦合 补给系统 

分 类 号：U661.32[交通运输工程—船舶及航道工程]