基于万吨溢油回收船的平面被动式减摇水舱优化和模型试验

为进一步掌握平面被动式减摇水舱内水位的变化对减摇效率的影响规律,以某万吨级溢油回收船为研究对象,选择5档水舱水位和无水状态分别进行静水横摇衰减模型试验、规则波模型试验和4级海况下的不规则波模型试验,对减摇水舱内水位的变化对目标船固有周期、阻尼特性和减摇效率的影响规律进行对比分析。研究结果表明:水舱内的水位增加对目标船的横摇固有周期和阻尼系数都有影响;当水舱内的水位在水舱总高的50%以内时,减摇效率随水位的增加而提高;当水舱内的水位在水舱总高的50%~60%范围内时,减摇效率最高;当水舱内的水位在水舱总高的60%以上时,减摇效率有下降的趋势。

Optimization and Model Test of Free-surface Passive Anti-rolling Tank Based on Ten-Thousand-Ton Oil Spill Recovery Ship

In order to further master the influence rule of water level change on the anti-rolling efficiency of free-surface passive anti-rolling tank. Taking a 10 000 ton oil spill recovery ship as the research object, five water levels of anti-rolling tank and the condition without water are chosen for the roll decay model testes, regular wave model testes and irregular wave testes at 4 level sea state. Aiming at the variety rule of the natrue period, damping characteristics, anti-rolling effect influenced by the water level change, the contrastive analysis is carried out. The results reveal that the change of water level will cause influence on the roll natrue period and roll damping coefficient of target ship, anti-rolling efficiency advance with the water level increase when the water less than 50% of the anti-rolling tank height, the tiptop of anti-rolling efficiency occur when the water level between 50%~60% of the anti-rolling tank height, and anti-rolling efficiency make a decline trend when the water level more than 60% of the anti-rolling tank height.