Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Study on the Free Roll Decay and Resistance Performances of Fishing Vessels by Varying Appendages

어선 부가물 별 자유 횡 동요 감쇠 및 저항성능에 관한 연구

  • Mijin Yoon (Shipbuilding & Marine Simulation Center, Tongmyong University) ;
  • Janghoon Seo (Shipbuilding & Marine Simulation Center, Tongmyong University) ;
  • Dong-Woo Park (Department of Marine Mobility, Tongmyong University) ;
  • Chanjae Lee (Department of Safety research, Korea Maritime Transportation Safety Authority) ;
  • Intae Kim (Department of Marine Mobility, Korea Maritime Transportation Safety Authority) ;
  • Dong Nam (Department of Marine Mobility, Korea Maritime Transportation Safety Authority)
  • 윤미진 (동명대학교 조선해양시뮬레이션센터) ;
  • 서장훈 (동명대학교 조선해양시뮬레이션센터) ;
  • 박동우 (동명대학교 해양모빌리티학과) ;
  • 이찬재 (한국해양교통안전공단) ;
  • 김인태 (한국해양교통안전공단) ;
  • 남동 (한국해양교통안전공단)
  • Received : 2023.10.06
  • Accepted : 2023.10.27
  • Published : 2023.10.31
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Abstract

In the present study, free roll decay and resistance performances of fishing vessels were evaluated with the combinations and variations of in the parameters of appendages which are attached to improve motion performance of fishing vessels. Computational Ffluid Ddynamics was used to perform free roll decay and resistance analysis. The roll period and decay coefficient were derived by the variations in the combination and dimensions of the primary appendages of the bilge keel and the under keel. It was observed thatThe variations of in the length of the under keel did not significantly impact to the roll damping coefficient. Conversely, for the bilge keel, an increase in the length and angle resulted in an increase in the roll damping coefficient. Comparison of resistance performance was additionally assessed among the selected hulls with the appendages and bare hull. The resistance of the hull with the appendages was higher than that of the bare hull due owing to the changes of in the pressure on the surface of the hull and trim angle. Throughout the present study, the impact of appendage parameter and arrangement on the free roll decay and resistance performance of fishing vessels were was assessed,. which This will be beneficial for the application of appendages to fishing vessels.

본 연구에서는 어선의 운동성능을 향상하기 위해 부착되는 부가물의 조합과 파라미터 변경에 따른 어선의 자유 횡 동요 감쇠와 저항 성능을 평가하였다. 성능 평가를 위해 전산유체역학(Computational Fluid Dynamics)을 이용한 수치해석을 수행하였으며, 주요 부가물인 빌지킬과 선저킬의 조합과 치수 변경에 따른 횡 동요 주기와 감쇠 계수의 변화를 확인하였다. 선저킬의 경우 길이가 변화함에 따른 횡 동요 감쇠 계수의 변화가 상대적으로 크지 않음을 확인하였다. 반면 빌지킬의 경우 길이와 각도의 증가에 따라서 횡 동요 감쇠 계수가 증가함을 확인하였다. 4가지 부가물 조합 조건과 나선의 저항 성능을 비교하였으며, 부가물에 의한 어선의 자세와 압력분포의 변화로 인해 저항이 증가함을 확인하였다. 본 연구 결과를 통해 부가물 크기와 배치가 어선의 운동 및 저항 성능에 미치는 영향을 확인할 수 있었으며, 어선 적용 시에 도움이 될 수 있을 것으로 기대한다.

Keywords

Acknowledgement

본 연구는 한국해양교통안전공단의 자체연구개발과제인 "D.N.A. 기반 어선의 횡동요 및 안정성능 예측 프로그램 개발" 과제의 지원을 받아 수행되었습니다.

References

  1. Chun, H. H., S. H. Chun, and S. Y. Kim(2001), Roll damping characteristics of a small fishing vessel with a central wing. Ocean Engineering, 28(12), pp. 1601-1619. https://doi.org/10.1016/S0029-8018(00)00066-4
  2. CD-Adapco(2021), User guide STAR-CCM+ Version 16.03.
  3. Irkal, M. A., S. Nallayarasu, and S. K. Bhattacharyya(2016), CFD approach to roll damping of ship with bilge keel with experimental validation. Applied Ocean Research, 55, pp. 1-17. https://doi.org/10.1016/j.apor.2015.11.008
  4. ITTC-Recommended Procedures and Guidelines(2014), Numerical Simulation of Capsize Behaviour of Damaged Ships in Irregular Beam Seas.
  5. ITTC-Recommended Procedures and Guidelines(2021), Estimation of Roll Damping.
  6. Jung J. H., H. S. Yoon, K. J. Kwon, and S. J. Cho(2011), Numerical Simulation of Flow around Free-rolling Rectangular Barge in Regular Waves. Journal of Ocean Engineering and Technology, 25(2), pp. 15-20. https://doi.org/10.5574/KSOE.2011.25.2.015
  7. Jung, K. H., S. B. Suh, and H. H. Chun(2007), Experimental Study on the Eddy Making Damping Effect at the Roll Motion of a Rectangular Barge. Journal of the Society of Naval Architects of Korea, 44(3), pp. 267-278. https://doi.org/10.3744/SNAK.2007.44.3.267
  8. Jiang, Y., X. Zhao, Z. Zeng, T. Sun, J. Li, and Z. Zong (2018), Comparison of RANS Method and Discrete Vortex Method on Simulating the Roll Motion of a Ship With Bilge Keels. In International Conference on Offshore Mechanics and Arctic Engineering, American Society of Mechanical Engineers, Vol. 51302, pp. V009T13A017.
  9. Kim, N., Y. J. Kim, and Y. Ha(2015), Experimental study of the free roll decay test for the evaluation of roll damping coefficients. Journal of the Society of Naval Architects of Korea, 52(6), pp. 460-470. https://doi.org/10.3744/SNAK.2015.52.6.460
  10. Park, D. W.(2018a), An experimental study on the resistance performance of fishing vessel appendages. Journal of the Korean Society of Marine Engineering, 42(9), pp. 668-674. https://doi.org/10.5916/jkosme.2018.42.9.668
  11. Park, D. W.(2018b), Assessment of the resistance performance of hull appendages attached to fishing vessels using CFD. Journal of the Korean Society of Marine Environment & Safety, 24(2), pp. 267-274. https://doi.org/10.7837/kosomes.2018.24.2.267
  12. Park, D. W.(2018c), Resistance performance map through studies on the dimension parameters of the bilge keel attached on the fishing vessel. Journal of the Korean Society of Marine Environment & Safety, 24(5), pp. 583-590. https://doi.org/10.7837/kosomes.2018.24.5.583
  13. Seok, J., J. C. Park, D. W. Park, and Y. J. Yang(2018), A study of roll performance for 2.99 ton class fishing boat with appendages using computational fluid dynamics. Journal of Advanced Marine Engineering and Technology, 42(4), pp. 293-297. https://doi.org/10.5916/jkosme.2018.42.4.293