孙一方, 姜宜辰, 宗智. T型翼控制船舶在波浪上纵向运动的数值研究[J]. 中国舰船研究, 2018, 13(2): 16-26. DOI: 10.3969/j.issn.1673-3185.2018.02.003
引用本文: 孙一方, 姜宜辰, 宗智. T型翼控制船舶在波浪上纵向运动的数值研究[J]. 中国舰船研究, 2018, 13(2): 16-26. DOI: 10.3969/j.issn.1673-3185.2018.02.003
SUN Yifang, JIANG Yichen, ZONG Zhi. Numerical research on control of longitudinal motion of ship in waves by T-foil[J]. Chinese Journal of Ship Research, 2018, 13(2): 16-26. DOI: 10.3969/j.issn.1673-3185.2018.02.003
Citation: SUN Yifang, JIANG Yichen, ZONG Zhi. Numerical research on control of longitudinal motion of ship in waves by T-foil[J]. Chinese Journal of Ship Research, 2018, 13(2): 16-26. DOI: 10.3969/j.issn.1673-3185.2018.02.003

T型翼控制船舶在波浪上纵向运动的数值研究

Numerical research on control of longitudinal motion of ship in waves by T-foil

  • 摘要:
      目的  主动控制摆角的T型翼可以在随船运动时产生更大的升力,改善船舶耐波性,因此需要对不同摆角控制信号的减摇效果进行计算和讨论。
      方法  首先,利用细长体理论对Wigley船型在3种航速下不同波长规则波中的运动进行计算。然后,在此基础上对T型翼摆角的控制信号进行分析讨论,采用力矩控制的方式得到摆角随船体运动变化的控制方程,讨论不同工况下控制参数的值,并计算引入控制力矩后的Wigley船型在相应条件下的时域运动响应。最后,分别对采用3种信号单独控制后的减摇效果进行对比,之后对多信号联合控制进行初步研究。
      结果  计算结果表明:与无T型翼作用的船相比,在高速状态下,响应峰值处的垂荡幅值可以减少32.43%,纵摇角最多可以有效减少57.62%,艏加速度可以减少61.17%;在Fr=0.3的情况下,采用角度信号控制T型翼的摆角减摇效果更明显,随着航速的增加,采用角速度信号控制的减摇效果更好。
      结论  在实际应用中,可根据不同的航速采用不同的运动信号和控制参数控制T型翼摆角。

     

    Abstract:
      Objectives  A T-foil with an active control system can provide higher lift force and improve the seakeeping of a ship. It is necessary to calculate the anti-vertical motion effect with the different control signals.
      Methods  The motion responses of the Wigley model in different wavelengths among three different Froude numbers are obtained via the slender body theory, and the lift force model of a T-foil is established. The torque control is used to obtain the governing equation of the T-foil's swing angle by analyzing the control signal. On the basis of calculating the motion of the Wigley model, the vertical motions of a ship with a T-foil in different control signals are calculated in time domain, and the attenuation effect with the three different control signals is compared. Finally the multi-signals hybrid control is studied preliminarily.
      Results  The results show that the T-foil with torque control can reduce 32.43% of the heave and 57.62% of the pitch angle response extremum, and can provide a reduction of more than 61.17% in bow acceleration at peak response compared with a ship without a T-foil and with a high Froude number. The anti-vertical motion effect in the condition of Fr=0.3 is more obvious when the lift moment is controlled by the pitch angle signal, and as the speed of the ship increases, using the control signal of pitch angular velocity can obtain a lower vertical motion response.
      Conclusions  In practical application the swinging angle of the T-foil can be controlled by different signals and control parameters at different speeds.

     

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