基于AQWA的船舶拖航耦合动力响应分析

Analysis on coupled dynamic response of ship towing based on AQWA

船舶在长期航行中,会遇到船舶发生故障以及穿过狭窄航道的情况,需要拖船牵引船舶航行。本文以船舶拖航为研究对象,利用AQWA分析时域耦合过程中不同拖缆数目和不同拖速对船舶拖航的影响。从拖缆张力和运动响应2个方面进行对比分析,结果表明,在相同环境条件下,2根拖缆比1根拖缆时最大张力平均减少49.18%,拖速4 kn比拖速8 kn时拖缆最大张力平均减少53.78%,拖速6 kn比拖速8 kn时拖缆最大张力平均减少29.39%。

In the long-term voyage,the ship will encounter the situation that the ship breaks down and passes through the narrow channel,and the tugboat is required to tug the ship to sail.This paper takes ship towing as the research object,uses the hydrodynamic software AQWA to analyze the influence of different number of towing lines and different towing speeds on the towing of ships in the process of time-domain coupling analysis.The tension and motion response are compared and analyzed.The results show that under the same environmental conditions,the maximum tension of two streamers is reduced by an average of 49.18%compared with one streamer,and the maximum tension of two streamers is reduced by an average of 53.78%when the towing speed is 4 kn compared with the towing speed of 8 kn,when the towing speed of 6 kn is lower than that of the towed speed of 8 kn,the maximum tension of the streamer is reduced by 29.39%on average.