梁利华, 王继铭, 宋吉广, 等. 可变周期被动式减摇水舱设计与仿真研究[J]. 中国舰船研究, 2021, 16(4): 147–154. doi: 10.19693/j.issn.1673-3185.02044
引用本文: 梁利华, 王继铭, 宋吉广, 等. 可变周期被动式减摇水舱设计与仿真研究[J]. 中国舰船研究, 2021, 16(4): 147–154. doi: 10.19693/j.issn.1673-3185.02044
LIANG L H, WANG J M, SONG J G, et al. Design and simulation investigation of variable period passive anti-rolling tank[J]. Chinese Journal of Ship Research, 2021, 16(4): 147–154. doi: 10.19693/j.issn.1673-3185.02044
Citation: LIANG L H, WANG J M, SONG J G, et al. Design and simulation investigation of variable period passive anti-rolling tank[J]. Chinese Journal of Ship Research, 2021, 16(4): 147–154. doi: 10.19693/j.issn.1673-3185.02044

可变周期被动式减摇水舱设计与仿真研究

Design and simulation investigation of variable period passive anti-rolling tank

  • 摘要:
      目的  针对半潜船在不同工作状态下横摇周期变化大的特点,设计一种周期可调的被动可控式减摇水舱,通过控制水舱内T型挡板的高度来改变水舱的固有周期,从而达到与船舶横摇周期匹配、较好的减摇效果。
      方法  首先,通过计算流体力学软件分析T型挡板布置对水舱固有周期的影响,并对水舱进行优化设计;然后,为了适应半潜船在不同工作条件或不同遭遇频率的海浪,通过自回归(AR)模型对船舶横摇周期进行预报,根据预报的横摇周期调整升起挡板的数量,并对所设计的水舱进行仿真。
      结果  仿真结果表明:所设计的水舱能够适应半潜船不同的工作状态,效果良好。
      结论  改变T型挡板的数量能够在一定程度上增大水舱的固有周期,并且通过控制挡板可以使其与半潜船横摇周期相匹配,从而更好地适应横摇周期变化较大的船舶,为其提供良好的减摇能力。

     

    Abstract:
      Objectives  Aiming at the characteristics of semi-submersible vessels with large roll period changes under different working conditions, a passive controllable anti-roll tank with an adjustable harmonic period is designed. The harmonic period is changed by controlling the height of the T-shaped baffle in the tank, generating a better anti-roll effect that matches the ship's roll period.
      Methods  First, the influence of the T-shaped baffle arrangement on the harmonic period of the tank is analyzed though Computational Fluid Dynamics software, and the design of the tank is optimized. Second, in order to adapt to semi-submersible vessels under different working conditions or encountering waves of different frequencies, the auto-regressive (AR) model is used to predict the ship's roll period and adjust the number of raised baffles according to the prediction, on the basis of which the designed water tank is simulated.
      Results  The simulation results show that the designed anti-roll tank can adapt to the different working conditions of semi-submersible vessels with positive effects.
      Conclusions  Changing the number of T-shaped baffles can increase the harmonic period of the tank to a certain extent, and it can be set to match the roll period of the semi-submersible vessel by controlling the baffles, thereby better adapting to ships with large roll period changes and providing strong anti-roll ability.

     

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