CAJ | 학술논문

在探讨带平面被动式减摇水舱的海洋平台工作船在横浪中的减摇问题上，采用RANS方法进行船舶和水舱的强迫运动模拟，通过数值处理得到船舶和水舱的水动力系数。假设在共振频率下船舶和水舱的横摇运动在达到稳态后可以解耦，由非线性动力学的方法求解船舶横摇运动，并在波浪中进行系列模型试验以研究减摇特性。海洋平台工作船具有多工况的特点，不同载况对应不同船舶固有周期，实际航行中对减摇水舱的使用就是通过改变水舱水深使水舱的周期等于船舶固有周期，而通过上述方法的快速计算，选择合适的水深和阻尼隔板可以达到理想的减摇效果。结论表明该方法可以预报不同方案下的船舶横摇运动，该思路在船舶的减摇水舱设计阶段可以提供参考价值，并且在实船航行中可以提供水深加载指导以适应复杂的多工况航行。文中研究结果被运用于一艘实船航行时水舱加水策略中。
재탐토대평면피동식감요수창적해양평태공작선재횡랑중적감요문제상，채용RANS방법진행선박화수창적강박운동모의，통과수치처리득도선박화수창적수동력계수。가설재공진빈솔하선박화수창적횡요운동재체도은태후가이해우，유비선성동역학적방법구해선박횡요운동，병재파랑중진행계렬모형시험이연구감요특성。해양평태공작선구유다공황적특점，불동재황대응불동선박고유주기，실제항행중대감요수창적사용취시통과개변수창수심사수창적주기등우선박고유주기，이통과상술방법적쾌속계산，선택합괄적수심화조니격판가이체도이상적감요효과。결론표명해방법가이예보불동방안하적선박횡요운동，해사로재선박적감요수창설계계단가이제공삼고개치，병차재실선항행중가이제공수심가재지도이괄응복잡적다공황항행。문중연구결과피운용우일소실선항행시수창가수책략중。
This work discusses the rolling motion in beam waves of a Platform Supply Vessel (PSV) with a rectangular passive anti-rolling tank (ART). CFD method based on RANS was used to simu-late the forced roll motion and obtain the hydrodynamic coefficients of the ship and the tank. Based on the assumption that the roll motions of ART and ship could be decoupled at resonance frequen-cy, a nonlinear dynamics method was applied to solve the rolling motion equation. PSV is character-ized with multiple roll motion periods, due to its capability to work at different working conditions. It is crucial to the period of ART to match the natural period of ship in seaway. This can be achieved by adjusting filling level in the ART. Furthermore, roll motion model tests of this PSV with different ART forms in beam waves were performed. Results indicate that this theoretical approach could predict different cases of ship roll motion with ART, and is useful to design the ART of a ship. Based on this study, a strategy for adjusting water depth in ART is proposed and applied in the real ship.