Hydrodynamic analysis and motion simulation of unpowered surfacing of a deep-sea work platform

被引：0
|
作者：
Hu F.-L. [1 ,2 ]
Feng K.-J. [1 ,2 ]
Zhang Y.-C. [1 ,2 ]
Ma X.-N. [1 ,2 ]
机构：
[1] China Ship Scientific Research Center, Wuxi
[2] Taihu Laboratory of Deepsea Technological Science, Wuxi
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2023年 / 27卷 / 11期
关键词：
hydrodynamics expression; hydrodynamics prediction; motion simulation; unpowered surfacing;
D O I：
10.3969/j.issn.1007-7294.2023.11.006
中图分类号：
学科分类号：
摘要：
The flow fields of a surfacing platform were studied in the range from -180° to 0° of attack angle. The results show hydrodynamics has strong nonlinear characteristics due to complex separation flow and vor⁃ tices. The rotation damping in the vertical plane is large for the studied platform because of its flat-like shape. The whole unpowered surfacing process is dominated by big change of attack angle. A new hydrody⁃ namics expression in motion equation was proposed. The position force is obtained by interpolation directly from data-base, others remain in tradition way. That leads to more precise prediction of the surfacing. The motion simulation of the surfacing platform revealed how the unloaded weight, position and initial state affect whole process. The following suggestions were proposed for safety surfacing in engineering. The deep sea work platform in this paper has good ability of safety surfacing. © 2023 China Ship Scientific Research Center. All rights reserved.
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页码：1641 / 1650
页数：9
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