Experimental Investigation of Dual T-foil System on the Pitch Motion Reduction of a Monohull Vessel

Abstract

As a vessel navigates at high speeds in waves, considerable pitching motion can result in the discomfort of passengers. In this study is proposed a ride control system consisting of dual T-foils to generate a larger righting moment than a common single T-foil system. One T-foil is mounted at the bow, and the other at the stern. Accordingly, different control strategies for dual T-foils were proposed To verify the stratigies, a model experiment was conducted in the Towing Tank, Dalian Unievrsity of Technology. The optimal control signal was determined by comparing the pitch responses, heave responses, bow accelerations, and stern accelerations of a vessel in regular waves. In addition, the control strategy for the best motion-reduction effect was investigated. The optimized dual T-foil system provides a 34% reduction in pitch motion.

Keywords

T-foil / Active control / High-speed vessel / Ride control system / Control strategy

References

[1] ArandaJ, DíazJM, RuipérezP, RuedaTM, LópezE. Decreasing of the motion sickness incidence by a multivariable classic control for a high speed ferry. IFAC Proceedings Volumes, 2001, 34(7): 273-278

[2] AlaviMehrJ, DavisMR, LavroffJ. Low reynolds number performance of a model scale T-foil. International Journal of Maritime Engineering, 2015, 157(A3): 175-188

[3] AlaviMehrJ, DavisMR, LavroffJ, HollowayDS, ThomasGA. Response of a high-speed wave-piercing catamaran to an active ride control system. International Journal of Maritime Engineering, 2016, 158(A4): A325-A335

[4] AlaviMehrJ, LavroffJ, DavisMR, HollowayD, ThomasG. An experimental investigation of ride control methods for high-speed catamarans Part 1: reduction of ship motions. Journal of Ship Research, 2017, 61: 35-49

[5] AlaviMehrJ, LavroffJ, DavisMR, HollowayD, ThomasG. An experimental investigation on slamming kinematics, impulse and energy transfer for high-speed catamarans equipped with ride control systems. Ocean Engineering, 2019, 178: 410-422

[6] CakiciF, YaziciH, AlkanAD. Optimal control design for reducing vertical acceleration of a motor yacht form. Ocean Engineering, 2018, 169: 636-650

[7] DavisMR, HollwayDS. Motion and passenger discomfort on high speed catamarans in oblique seas. International Shipbuilding Progress, 2003, 50(4): 333-370

[8] EstebanS, CruzJMDL, Giron-SierraJM, AndresBD, DíazJM, ArandaJ. Fast ferry vertical accelerations reduction with active flaps and T-foil. IFAC Proceedings Volumes, 2000, 33(21): 227-232

[9] EstebanS, AndresBD, Giron-SierraJM, PoloOR. A simulation tool for a fast ferry control design. IFAC Proceedings Volumes, 2001, 34(7): 267-272

[10] EstebanS, Andrés-ToroB, Besada-PortasE, Girón-SierraJM, CruzJMDL. Multiobjective control of flaps and T-foil in highspeed ships. IFAC Proceedings Volumes, 2002, 35(1): 313-318

[11] EstebanS, Giron-SierraJM, Andres-ToroBD, CruzJMDL, RiolaJM. Fast ships models for seakeeping improvement studies using flaps and T-foil. Mathematical and Computer Modelling, 2005, 41(1): 1-24

[12] FangCC, ChanHS. An investigation on the vertical motion sickness characteristics of a high-speed catamaran ferry. Ocean Engineering, 2007, 34(14–15): 1909-1917

[13] Giron-SierraJM, EstebanS, AndresBD, DiazJM, RiolaJM. Experimental study of controlled flaps and T-foil for comfort improvement of a fast ferry. IFAC Proceedings Volumes, 2001, 34(7): 261-266

[14] Giron-SierraJM, KatebiR, CruzJMDL, EstebanS. The control of specific actuators for fast ferry vertical motion damping. International Conference on Control Applications IEEE, Glasgow, UK, 2002, 2002: 304-309

[15] GopinathS, VijayakumarR. Computational analysis of the effect of hull vane on hydrodynamic performance of a mediumspeed vessel. Journal of Marine Science and Application, 2023, 22: 762-774

[16] HollwayDS, DavisMR. Ship motion computations using a high froude number time domain strip theory. Journal of ship research, 2006, 50: 15-30

[17] JacobiG, ThomasG, DavisM, HollowayD, DavidsonG, RobertsT. Full scale motions of a large high-speed catamaran: the influence of wave environment, speed and ride control system. The International Journal of Maritime Engineering, 2012, 154: A143-A155

[18] JiangYC, BaiJY, SunY, SunYF, ZongZ. Numerical investigation of T-foil hybrid control strategy for ship motion reduction in head seas. Ocean Engineering, 2020, 217: 107924

[19] KucukdemiralIB, CakiciF, YaziciH. A model predictive vertical motion control of a passenger ship. Ocean Engineering, 2019, 186: 106100

[20] LavroffJ, DavisMR, HollowayDS, ThomasG. The vibratory response of high-speed catamarans to slamming investigated by hydroelastic segmented model experiments. International Journal of Maritime Engineering, 2009, 151: 1-11

[21] LavroffJ, DavisMR, HollowayDS, ThomasG. Wave slamming loads on wave-piercer catamarans operating at highspeed determined by hydro-elastic segmented model experiments. Marine Structures, 2013, 33: 120-142

[22] LiuZL, ZhengLH, LiGS, YuanSZ, YangSB. An experimental study of the vertical stabilization control of a trimaran using an actively controlled T-foil and flap. Ocean Engineering, 2021, 219: 108224

[23] PoloOR, EstebanS, MaronA, GranL, CruzJMDL. Control code generator used for control experiments in ship scale model. IFAC Proceedings Volumes, 2001, 34(7): 279-284

[24] RozhdestvenskyKV, HtetZM. A mathematical model of a ship with wings propelled by waves. Journal of Marine Science and Application, 2021, 20: 595-620

[25] ThomasG, WinklerS, DavisM, HollowayD, MatsubaraS, LavroffJ, FrenchB. Slam events of high-speed catamarans in irregular waves. Journal of Marine Science and Technology, 2011, 16: 8-21

[26] TicherfatineM, QidanZ. Model-free approach based on intelligent PD controller for vertical motion reduction in fast ferries. Turkish Journal of Electrical Engineering & Computer Sciences, 2018, 26: 393-406

[27] TicherfatineM, ZhuQ. Fast ferry smoothing motion via intelligent PD controller. Journal of Marine Science and Application, 2018, 17(2): 273-279

[28] YangD, ShaoF, LiC, et al.. Overlapping grid technique for numerical simulation of a fast-cruising catamaran fitted with active T-Foils. Journal of Marine Science and Application, 2019, 18: 176-184

[29] ZongZ, SunYF, JiangYC. Experimental study of controlled T-foil for vertical acceleration reduction of a trimaran. Journal of Marine Science and Technology, 2019, 24(2): 553-564

RIGHTS & PERMISSIONS

Harbin Engineering University and Springer-Verlag GmbH Germany, part of Springer Nature