Air-Floating Towing Behaviors of Multi-Bucket Foundation Platform

Air-floating towing beha viors of multi-bucket foundation plat form （MBFP） are investigated with the 1/20-scale model tests and hydrodynamic so ftware MOSES. MOSES numerical model was val idated by test results, and M OSES prototype model of MBFP can eliminate scale effect of model. The influences o...

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Bibliographic Details
Published in:China ocean engineering 2013-10, Vol.27 (5), p.645-658
Main Author: 乐丛欢 丁红岩 张浦阳
Format: Article
Language:English
Subjects:
Acceleration
Coastal Sciences
Engineering
Fluid- and Aerodynamics
Foundations
Freeboard
Marine
Marine & Freshwater Sciences
Mathematical models
MOSES
Numerical and Computational Physics
Oceanography
Offshore Engineering
Simulation
Stability
Surges
Towing
Water depth
桶形基础平台
模型试验
浅水效应
浮拖
牵引力
稳定性影响
行为
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Summary:Air-floating towing beha viors of multi-bucket foundation plat form （MBFP） are investigated with the 1/20-scale model tests and hydrodynamic so ftware MOSES. MOSES numerical model was val idated by test results, and M OSES prototype model of MBFP can eliminate scale effect of model. The influences of towing factors of to wing speed, water depth, freeboard, and w ave direction on air-floating tow ing stability of MBFP were analyzed by model tests and validated MOSES prototype mod el. It is sho wn that the re duction of towing sp eed can effectively d ecrease the to wing force and surge acceleration to improve towing stability. Water depth is another f actor in towing s tability. Obvious shallow water effect will appear in shallow water with sma ll water depth-draft ratio and it w ill disappear gradually and air-floating towing becomes more stable with the increase of water depth. Accelerations of surge, s way and heave are small and they have modest changes when freeboard increases from 0.5 to 2 m. For MBFP, the freeboard is not suggested to be larger than 2 m in following wave. Wave direction has large influence on the towing stability, the surge acceleration and towing force are sensitive to the va riation of wave direction, the surge acceleration and towing force in following wave （0°） and counter wave （180°） are much larger than that in transverse sea （90°and 270°）.
ISSN:0890-5487
2191-8945
DOI:10.1007/s13344-013-0054-4