Improved Ant Colony Optimization for Accelerations of Equal-length Paths of Riser Re-entry

Abstract

Abstract:

Based on the dynamic analysis of free-hanging risers, an improved Ant Colony Optimization (ACO) was proposed for optimizations of accelerations of equallength paths. Via the improved ACO, an optimized motion scheme for the upper end was obtained. Under the optimized motion scheme, the distance from the lower end to wellhead was effectively decreased and the re-entry took less time, which made the re-entry operation more convenient. In this paper, the different dynamic response and riser shape changes under optimized motion scheme and ordinary motion scheme were compared. The results demonstrate that the motion optimizations of the improved ACO is effective, and the optimized motion scheme obtained via improved ACO could make the re-entry more convenient.

Key words: free-hanging riser, riser re-entry, dynamic analysis, motion optimization, improved ant colony algorithm

CLC Number:

P 756

WANG Shengwei,XU Xuesong,YAO Baoheng,LIAN Lian. Improved Ant Colony Optimization for Accelerations of Equal-length Paths of Riser Re-entry[J]. Journal of Shanghai Jiaotong University, 2013, 47(10): 1585-1590.

References

［1］Xu X S, Yao B H, Ren P. Dynamics calculation for underwater moving slender bodies based on flexible segment model ［J］. Ocean Engineering, 2013,57(1): 111127.

［2］Xu X S, Wang S W. A flexiblesegmentmodel based dynamics calculation method for free hanging marine risers in reentry ［J］. China Ocean Engineering, 2012,26(1):139152.

［3］Hong Y P, Nakamura M, Koterayama W, et al. An experimental and numerical study on dynamics of flexible free hanging riser ［C］//Proceedings of the 5th ISOPE Pacific/Asia Offshore Mechanics Symposium. Deajeon, Korea: ISOPE,2002: 131137.

［4］Wang S W, Xu X S, Yao B H, et al. A finite difference approximation for dynamic calculation of vertical free hanging slender risers in reentry application ［J］. China Ocean Engineering, 2012, 26(4): 637652.

［5］Wang S W, Xu X S, Lian L. Direct algorithms for steadystate solution of long slender marine structures ［J］. Journal of Shanghai Jiaotong University (Science), 2013, 18(1): 3743.

［6］Triantafyllou M. Cable mechanics for moored floating systems ［C］//Proceedings of the 7th International Conference on the Behavior of Offshore Structures. Massachusetts, USA: Pergamon, 1994: 5779.

［7］Chatjigeorgiou I K. A finite differences formulation for the linear and nonlinear dynamics of 2D catenary risers ［J］. Ocean Engineering, 2008, 35(7): 616636.

［8］Suzuki H, Yoshida K, Shida S, et al. Active control of riser deformation and vessel motion for automatic entry/reentry system ［C］//Proceedings of the 4th International Offshore and Polar Engineering Conference. Osaka, Japan: ISOPE, 1994: 216223.

［9］Dorigo M. Optimization, learning and natural algorithms ［D］. Italy: Politecnico di Milano, 1992.

［10］Dorigo M, Gambardella L M. Ant colonies for the travelling salesman problem ［J］. Bio Systems, 1997, 43(2): 7381.

［11］Colorni A, Dorigo M, Maniezzo V, et al. Ant system for jobshop scheduling［J］. Belgian Journal of Operations Research, Statistics and Computer Science, 1994, 34(1):3953.

[1]	ZHANG Jun* (张军), ZHAO Shenwei (赵申卫), WANG Yuanqiang (王远强), ZHU Xinshan (朱新山). Improved Social Emotion Optimization Algorithm for Short-Term Traffic Flow Forecasting Based on Back-Propagation Neural Network [J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(2): 209-219.
[2]	ZHANG Chengyi, XU Xuesong. Research on Motion Relationship Between the Surface Boat and the Wave-Propelled Sub in Wave Glider System [J]. Journal of Shanghai Jiao Tong University, 2018, 52(2): 127-132.
[3]	SONG An-ke, HE Ning, ZHONG Wen-jun, CAI Yuan-lang. Mooring System Design of a Semi-Submersible Crane and Pipe-Laying Vessel [J]. Ocean Engineering Equipment and Technology, 2017, 4(6): 347-351.
[4]	ZENG Fanyun, LI Mingguang, CHEN Jinjian, WANG Jianhua. Development and Application of a System for Dynamic and Synchronous Analysis of both Monitor Data and Construction Information in Foundation Pit Groups [J]. Journal of Shanghai Jiao Tong University, 2017, 51(03): 269-276.
[5]	YANG He-zhen*(杨和振), JIANG Hao (姜豪), YANG Qi (杨启), DING Jin-hong (丁金鸿). Coupled Element Modeling Scheme for the Global Dynamic Analysis of Unbonded Flexible Risers [J]. Journal of shanghai Jiaotong University (Science), 2015, 20(2): 234-242.
[6]	LIU Yong-1, CHEN Lu-Yun-1, HOU Guo-Hua-2. Study on Post-service Jacket Platform Residual Life Reliability Prediction Method [J]. Journal of Shanghai Jiaotong University, 2013, 47(02): 274-277.
[7]	ZHANG Yuan-Jiao-1, XING Ai-Guo-1, ZHU Ji-Liang-2. Dynamics Analysis of Niujuangou Rockslide-Debris Avalanche Triggered by the Wenchuan Earthquake [J]. Journal of Shanghai Jiaotong University, 2012, 46(10): 1665-1670.
[8]	XIA Zhi-fan, YE Guan-lin, WANG Jian-hua, YE Bin, ZHANG Feng. Effective Stress Analysis of Earthquake Induced Liquefaction of Dam Foundation under Different Water Table in Reservoir [J]. Journal of Shanghai Jiao Tong University, 2009, 43(02): 173-177.