Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning
A subsea shuttle tanker (SST) concept for liquid carbon dioxide transportation was recently proposed to support studies evaluating the ultra-efficient underwater cargo submarine concept. One important topic is the position keeping ability of SST during the offloading process. In this process, the SS...
Published in: | Journal of Offshore Mechanics and Arctic Engineering |
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American Society of Mechanical Engineers
2022
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Online Access: | https://hdl.handle.net/11250/3058820 https://doi.org/10.1115/1.4055282 |
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ftunivstavanger:oai:uis.brage.unit.no:11250/3058820 2023-06-11T04:07:24+02:00 Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning Ma, Yucong Xing, Yihan Sui, Dan 2022-08-04T09:46:53Z application/pdf https://hdl.handle.net/11250/3058820 https://doi.org/10.1115/1.4055282 eng eng American Society of Mechanical Engineers Ma, Y., Xing, Y., & Sui, D. (2023). Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current—Model Development and Tuning. Journal of Offshore Mechanics and Arctic Engineering, 145(3), 030901. urn:issn:0892-7219 https://hdl.handle.net/11250/3058820 https://doi.org/10.1115/1.4055282 cristin:2041079 The owners/authors Journal of Offshore Mechanics and Arctic Engineering VDP::Teknologi: 500 Peer reviewed Journal article 2022 ftunivstavanger https://doi.org/10.1115/1.4055282 2023-05-29T16:02:45Z A subsea shuttle tanker (SST) concept for liquid carbon dioxide transportation was recently proposed to support studies evaluating the ultra-efficient underwater cargo submarine concept. One important topic is the position keeping ability of SST during the offloading process. In this process, the SST hovers above the well and connects with the wellhead using a flowline. This process takes around 4 h. Ocean currents can cause tremendous drag forces on the subsea shuttle tanker during this period. The flow velocities over hydroplanes are low throughout this process, and the generated lift forces are generally insufficient to maintain the SST’s depth. The ballast tanks cannot provide such fast actuation to cope with the fluctuation of the current. It is envisioned that tunnel thrusters that can provide higher frequency actuation are required. This paper develops a maneuvering model and designs a linear quadratic regulator that facilitates the SST station-keeping problem in stochastic current. As case studies, the SST footprints at 0.5 m/s, 1.0 m/s, and 1.5 m/s mean current speeds are presented. Numerical results show that the designed hovering control system can ensure the SST’s stationary during offloading. The required thrust from thrusters and the propeller are presented. The presented model can serve as a basis for obtaining a more efficient design of the SST and provide recommendations for the SST operation. acceptedVersion Article in Journal/Newspaper Arctic University of Stavanger: UiS Brage Journal of Offshore Mechanics and Arctic Engineering 145 3 |
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language |
English |
topic |
VDP::Teknologi: 500 |
spellingShingle |
VDP::Teknologi: 500 Ma, Yucong Xing, Yihan Sui, Dan Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning |
topic_facet |
VDP::Teknologi: 500 |
description |
A subsea shuttle tanker (SST) concept for liquid carbon dioxide transportation was recently proposed to support studies evaluating the ultra-efficient underwater cargo submarine concept. One important topic is the position keeping ability of SST during the offloading process. In this process, the SST hovers above the well and connects with the wellhead using a flowline. This process takes around 4 h. Ocean currents can cause tremendous drag forces on the subsea shuttle tanker during this period. The flow velocities over hydroplanes are low throughout this process, and the generated lift forces are generally insufficient to maintain the SST’s depth. The ballast tanks cannot provide such fast actuation to cope with the fluctuation of the current. It is envisioned that tunnel thrusters that can provide higher frequency actuation are required. This paper develops a maneuvering model and designs a linear quadratic regulator that facilitates the SST station-keeping problem in stochastic current. As case studies, the SST footprints at 0.5 m/s, 1.0 m/s, and 1.5 m/s mean current speeds are presented. Numerical results show that the designed hovering control system can ensure the SST’s stationary during offloading. The required thrust from thrusters and the propeller are presented. The presented model can serve as a basis for obtaining a more efficient design of the SST and provide recommendations for the SST operation. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Ma, Yucong Xing, Yihan Sui, Dan |
author_facet |
Ma, Yucong Xing, Yihan Sui, Dan |
author_sort |
Ma, Yucong |
title |
Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning |
title_short |
Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning |
title_full |
Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning |
title_fullStr |
Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning |
title_full_unstemmed |
Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current - Model Development and Tuning |
title_sort |
trajectory envelope of a subsea shuttle tanker hovering in stochastic ocean current - model development and tuning |
publisher |
American Society of Mechanical Engineers |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3058820 https://doi.org/10.1115/1.4055282 |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Journal of Offshore Mechanics and Arctic Engineering |
op_relation |
Ma, Y., Xing, Y., & Sui, D. (2023). Trajectory Envelope of a Subsea Shuttle Tanker Hovering in Stochastic Ocean Current—Model Development and Tuning. Journal of Offshore Mechanics and Arctic Engineering, 145(3), 030901. urn:issn:0892-7219 https://hdl.handle.net/11250/3058820 https://doi.org/10.1115/1.4055282 cristin:2041079 |
op_rights |
The owners/authors |
op_doi |
https://doi.org/10.1115/1.4055282 |
container_title |
Journal of Offshore Mechanics and Arctic Engineering |
container_volume |
145 |
container_issue |
3 |
_version_ |
1768380558458486784 |