The low frequency (LF) response of a soft yoke moored 160kDWT FPSO in shallow water is investigated by conducting frequency domain computations and wave basin model tests. An incident wave with Hs = 4.1m and Tp = 8.9s is applied. An obvious LF part appears in the measured wave spectrum at water depth of 16.7m. As a result, the 1st order LF wave force exists and is much larger than the 2nd one. The difference of the spectrums is about one hundred times. The LF wave drift force increases enormously. Consequently, much larger resonant surge response is induced. The LF surge amplitude at h = 16.7m is about 7 times the one at h = 29.0m and 9 times the one in deep water, although the 2nd order response changes a little. Therefore, in very shallow water, LF part of incident waves should be taken into account carefully and LF wave forces and wave induced motions will be very serious.
Skip Nav Destination
ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
June 10–15, 2007
San Diego, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
Volume 1: Offshore Technology; Special Symposium on Ocean Measurements and Their Influence on Design
ISBN:
0-7918-4267-3
PROCEEDINGS PAPER
Low Frequency Wave Forces and Wave Induced Motions of a FPSO in Shallow Water
Longfei Xiao,
Longfei Xiao
Shanghai Jiao Tong University, Shanghai, China
Search for other works by this author on:
Jianmin Yang,
Jianmin Yang
Shanghai Jiao Tong University, Shanghai, China
Search for other works by this author on:
Zhiqiang Hu
Zhiqiang Hu
Shanghai Jiao Tong University, Shanghai, China
Search for other works by this author on:
Longfei Xiao
Shanghai Jiao Tong University, Shanghai, China
Jianmin Yang
Shanghai Jiao Tong University, Shanghai, China
Zhiqiang Hu
Shanghai Jiao Tong University, Shanghai, China
Paper No:
OMAE2007-29047, pp. 37-43; 7 pages
Published Online:
May 20, 2009
Citation
Xiao, L, Yang, J, & Hu, Z. "Low Frequency Wave Forces and Wave Induced Motions of a FPSO in Shallow Water." Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. Volume 1: Offshore Technology; Special Symposium on Ocean Measurements and Their Influence on Design. San Diego, California, USA. June 10–15, 2007. pp. 37-43. ASME. https://doi.org/10.1115/OMAE2007-29047
Download citation file:
6
Views
0
Citations
Related Proceedings Papers
Related Articles
Horizontal Motions of an SPM Tanker Under Alternative Mooring Configurations
J. Offshore Mech. Arct. Eng (November,1995)
Second-Order Low-Frequency Wave Forces on a SPM Offloading Tanker in Shallow Water
J. Offshore Mech. Arct. Eng (November,2009)
Dynamic Asynchronous Coupled Analysis and Experimental Study for a Turret Moored FPSO in Random Seas
J. Offshore Mech. Arct. Eng (August,2015)
Related Chapters
Aerodynamic Performance Analysis
Axial-Flow Compressors
A Coupling Model for Storm Surges, Waves and Currents
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3
Occlusion Identification and Relief within Branched Structures
Biomedical Applications of Vibration and Acoustics in Therapy, Bioeffect and Modeling