Dynamic simulation of subsea pipeline and trawl board pull-over interaction |
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| Affiliation: | 1. Department of Marine Technology, Norwegian University of Science and Technology, Otto Nielsens vei 10, NO-7491 Trondheim, Norway;2. Statoil Research Centre, Arkitekt Ebbells vei 10, NO-7005 Trondheim, Norway;1. Key Laboratory of Fundamental Science for National Defence of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110016, Liaoning, China;2. School of Mechanical Engineering, Taizhou University, Taizhou 318000, Zhejiang, China;3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China;1. National Engineering Laboratory for Pipeline Safety, Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102246, China;2. PowerChina Beijing Engineering Corporation Limited, Beijing 100024, China;3. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China;1. Tokyo University of Marine Science and Technology, 4-5-7 Konan Minato-ku, Tokyo, 108-8477, Japan;2. College of Fisheries, Ocean University of China, Qingdao, 266003, China;3. Research and Development Department, Nichimo Co., Ltd, 2-3-17 Ozuki-Kojima, Shimonoseki, Yamaguchi, 750-1136, Japan;4. Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato-cho, Hakodate, Hokkaido, 041-8611, Japan;1. Department of Structural Engineering, Tongji University, Shanghai, China;2. Verco Decking, Sunnyvale, CA, USA;3. Future Pipe Industries, Houston, TX, USA;4. Department of Engineering Technology, University of North Texas, Denton, TX, USA |
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| Abstract: | This paper presents a novel strategy based on the finite element method for prediction of fishing gear interference loads on subsea pipelines. Trawl board pull-over interaction is addressed with emphasis on hydrodynamic load representation, handling of pipe-trawl contact and modeling of the trawl gear system. A validation study involving 34 model test runs was carried out for three trawl boards with variation of pipe span height, towing velocity, towing line stiffness and pipe support conditions. The simulated bias of the load impulse was found to be within a 10% margin of the model test measurements. Based on the validated numerical model a sensitivity analysis involving nearly 250 simulations was conducted. The interaction behavior was seen to be greatly influenced by the board-pipe friction coefficient, the tension level in the wire between board and trawl net, the towing line drag properties and the direction of over-trawling. |
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| Keywords: | Pipeline Trawl board Pull-over Interference Fishing gear |
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