Experimental Investigation into the Effect of Roll Amplitude on Roll Damping

doi:10.1007/s12204-019-2120-4

Journal of Shanghai Jiao Tong University (Science) ›› 2019, Vol. 24 ›› Issue (6): 732-738.doi: 10.1007/s12204-019-2120-4

Experimental Investigation into the Effect of Roll Amplitude on Roll Damping

ZHANG Xiaohui (张晓慧), GU Xiechong (顾解忡), MA Ning (马宁), WANG Yifan (王一凡), WU Zeren (吴泽仁)

(a. State Key Laboratory of Ocean Engineering; b. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration; c. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

出版日期:2019-12-15 发布日期:2019-12-07
通讯作者: GU Xiechong (顾解忡) E-mail:xcgu@sjtu.edu.cn

Experimental Investigation into the Effect of Roll Amplitude on Roll Damping

ZHANG Xiaohui (张晓慧), GU Xiechong (顾解忡), MA Ning (马宁), WANG Yifan (王一凡), WU Zeren (吴泽仁)

(a. State Key Laboratory of Ocean Engineering; b. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration; c. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

Online:2019-12-15 Published:2019-12-07
Contact: GU Xiechong (顾解忡) E-mail:xcgu@sjtu.edu.cn

摘要/Abstract

摘要： An in-house large eddy simulation (LES) code has been developed in the previous study. In order to validate the code for simulation of roll motion, effect of roll amplitude on forced roll damping is experimentally investigated in a circulating water channel at Shanghai Jiao Tong University (SJTU). KRISO very large crude carrier 2 (KVLCC2) is taken as a target ship, and a model with a scale of 1 : 128.77 is manufactured. Tests are carried out for the ship model at shallow draft with frequencies around its natural roll frequency, where natural roll frequency is attained via free roll decay. Six forced roll tests with roll amplitudes ranging from 1? to 4? are performed experimentally, and three forced roll motions are simulated with the in-house LES code for middle section of the ship model. Discrepancies between the computed roll damping coefficients and the ones from forced roll tests are quite small. By means of particle image velocimetry (PIV), velocity fields in the vicinity of the ship model, and generation and evolution of vortices near the ship bilge are measured in detail. It is shown that roll amplitude has a significant effect on the vortex behavior, and therefore on the magnitude of roll damping coefficient. Further experimental and numerical investigation into roll motions with large amplitudes is planned.

关键词: roll damping, forced rolling, ship model test, particle image velocimetry (PIV), velocity field

Abstract: An in-house large eddy simulation (LES) code has been developed in the previous study. In order to validate the code for simulation of roll motion, effect of roll amplitude on forced roll damping is experimentally investigated in a circulating water channel at Shanghai Jiao Tong University (SJTU). KRISO very large crude carrier 2 (KVLCC2) is taken as a target ship, and a model with a scale of 1 : 128.77 is manufactured. Tests are carried out for the ship model at shallow draft with frequencies around its natural roll frequency, where natural roll frequency is attained via free roll decay. Six forced roll tests with roll amplitudes ranging from 1? to 4? are performed experimentally, and three forced roll motions are simulated with the in-house LES code for middle section of the ship model. Discrepancies between the computed roll damping coefficients and the ones from forced roll tests are quite small. By means of particle image velocimetry (PIV), velocity fields in the vicinity of the ship model, and generation and evolution of vortices near the ship bilge are measured in detail. It is shown that roll amplitude has a significant effect on the vortex behavior, and therefore on the magnitude of roll damping coefficient. Further experimental and numerical investigation into roll motions with large amplitudes is planned.

Key words: roll damping, forced rolling, ship model test, particle image velocimetry (PIV), velocity field

中图分类号:

U 661.32

ZHANG Xiaohui (张晓慧), GU Xiechong (顾解忡), MA Ning (马宁), WANG Yifan (王一凡), WU Zeren. Experimental Investigation into the Effect of Roll Amplitude on Roll Damping[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(6): 732-738.

ZHANG Xiaohui (张晓慧), GU Xiechong (顾解忡), MA Ning (马宁), WANG Yifan (王一凡), WU Zeren (吴泽仁). Experimental Investigation into the Effect of Roll Amplitude on Roll Damping[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(6): 732-738.

参考文献 19

[16]	JUNG K H, CHANG K A, JO H J. Viscous effect onthe roll motion of a rectangular structure [J]. Journalof Engineering Mechanics, 2006, 132(2): 190-200.
[17]	WANG X Q, LIU H X, MA S, GUO C. Investigationof the hydrodynamic model test of forced rolling for abarge using PIV [J]. Chinese Journal of Ship Research,2017, 12(2): 49-56 (in Chinese).
[1]	SOMAYAJULA A, FALZARANO J. Large-amplitudetime-domain simulation tool for marine and offshoremotion prediction [J]. Marine Systems & Ocean Technology,2015, 10(1): 1-17.
[2]	SU Z Y, FALZARANO J M. Markov and Melnikovbased methods for vessel capsizing criteria [J]. OceanEngineering, 2013, 64(2): 146-152.
[18]	ZHANG X H, BAI J L, GU X C, et al. Large eddy simulationof flows around a free surface piercing fixed 2Drectangle using a novel ghost-cell immersed boundarymethod [C]// Proceedings of the Twenty-Eighth (2018)International Ocean and Polar Engineering Conference.Sapporo, Japan: International Society of Offshoreand Polar Engineers, 2018: 614-621.
[3]	DOWNIE M J, BEARMAN P W, GRAHAM J M R.Effect of vortex shedding on the coupled roll responseof bodies in waves [J]. Journal of Fluid Mechanics,1988, 189: 243-261.
[19]	ZHU D J. Study on ship maneuvering and rolling prediction and course-keeping control in waves [D]. Shanghai,China: Shanghai Jiao Tong University, 2015 (inChinese).
[4]	KORPUS R A, FALZARANO J M. Prediction of viscousship roll damping by unsteady Navier-Stokes techniques[J]. Journal of Offshore Mechanics and ArcticEngineering, 1997, 119(2): 108-113.
[5]	BROWN D T, PATEL M H. A theory for vortex sheddingfrom the keels of marine vehicles [J]. Journal ofEngineering Mathematics, 1985, 19(4): 265-295.
[6]	FROUDE W. On the influence of resistance upon therolling of ships [J]. Naval Science, 1972, 1: 411-429.
[7]	IKEDA Y. A prediction method for ship roll damping[R]. Sakai, Japan: Department of Naval Architecture,Osaka Prefecture University, 19785.
[8]	BASSLER C C, REED A M. An analysis of the bilgekeel roll damping component model [C]//10th InternationalConference on Stability of Ships and OceanVehicles. [s.l.]: STAB International Standing Committee,2009: 369-386.
[9]	VUGTS J H. The hydrodynamic coefficients for swaying,heaving and rolling cylinders in a free surface[J]. International Shipbuilding Progress, 1968, 15(167):251-276.
[10]	SPOUGE J R. Non-linear analysis of large-amplituderolling experiments [J]. International ShipbuildingProgress, 1988, 35(403): 271-320.
[11]	YEUNG R W, LIAO S W, RODDIER D. On roll hydrodynamicsof rectangular cylinders [C]//Proceedingsof the Eighth (1998) International Offshore and PolarEngineering Conference. Montreal, Canada: TheInternational Society of Offshore and Polar Engineers,1998: 445-453.
[12]	YEUNG R W. Fluid dynamics of finned bodies: FromVIV to FPSO [C]//Proceedings of The Twelfth (2002)International Offshore and Polar Engineering Conference.Kitakyushu, Japan: The International Society ofOffshore and Polar Engineers, 2002: 1-11.
[13]	XU D J, ZHOU Q G, HONG W H, et al. The roll testallowing of deck into water [J]. Ship Building of China,1995(4): 29-36 (in Chinese).
[14]	JUNG K H, CHANG K A, HUANG E T. Twodimensionalflow characteristics of wave interactionswith a free-rolling rectangular structure [J]. Ocean Engineering,2004, 32(1): 1-20.
[15]	IRKAL M A R, NALLAYARASU S, BHATTACHARYYAS K. CFD approach to roll damping ofship with bilge keel with experimental validation [J].Applied Ocean Research, 2016, 55: 1-17.
[16]	JUNG K H, CHANG K A, JO H J. Viscous effect onthe roll motion of a rectangular structure [J]. Journalof Engineering Mechanics, 2006, 132(2): 190-200.
[17]	WANG X Q, LIU H X, MA S, GUO C. Investigationof the hydrodynamic model test of forced rolling for abarge using PIV [J]. Chinese Journal of Ship Research,2017, 12(2): 49-56 (in Chinese).
[18]	ZHANG X H, BAI J L, GU X C, et al. Large eddy simulationof flows around a free surface piercing fixed 2Drectangle using a novel ghost-cell immersed boundarymethod [C]// Proceedings of the Twenty-Eighth (2018)International Ocean and Polar Engineering Conference.Sapporo, Japan: International Society of Offshoreand Polar Engineers, 2018: 614-621.
[19]	ZHU D J. Study on ship maneuvering and rolling prediction and course-keeping control in waves [D]. Shanghai,China: Shanghai Jiao Tong University, 2015 (inChinese).

Experimental Investigation into the Effect of Roll Amplitude on Roll Damping

Experimental Investigation into the Effect of Roll Amplitude on Roll Damping

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献 19

相关文章 2

编辑推荐

Metrics

本文评价

[1]	XU Hongchang (徐宏昌), LIU Shuangzhai (刘双寨), PAN Haoxing (潘浩星). Spray Characteristics with High-Speed Tomographic Particle Image Velocimetry Under Non-Flash and Flash Boiling Conditions[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(5): 591-596.
[2]	GE Bing* (葛冰), ZANG Shu-sheng (臧述升), GUO Pei-qing (郭培卿). Experimental Study on Flow Structure of a Swirling Non-Premixed Syngas Flame[J]. 上海交通大学学报（英文版）, 2013, 18(1): 92-100.