THEORETICAL RESEARCH ON HYDRODYNAMICS OF A GEOMETRIC SPAR IN FREQUENCY-AND TIME-DOMAINS

Considering the coupling effects of the vessel and its riser and mooring system, hydrodynamic analyses of a geometric spar were performed both in frequency- and time-domains. Based on the boundary element method, the 3-D panel model of the geometric spar and the related free water surface model were...

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Bibliographic Details
Published in:Journal of Hydrodynamics 2008-02, Vol.20 (1), p.30-38
Main Authors: Wang, Ying, Yang, Jian-min, Hu, Zhi-qiang, Xiao, Long-fei
Format: Article
Language:English
Subjects:
Engineering
Engineering Fluid Dynamics
Hydrology/Water Resources
Numerical and Computational Physics
Simulation
几何材料
水动力学
联系分析
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Summary:Considering the coupling effects of the vessel and its riser and mooring system, hydrodynamic analyses of a geometric spar were performed both in frequency- and time-domains. Based on the boundary element method, the 3-D panel model of the geometric spar and the related free water surface model were established, and the first-order and second-order difference-frequency wave loads and other hydrodynamic coefficients were calculated. Frequency domain analysis of the motion Response Amplitude Operators （RAO） and Quadratic Transfer Functions （QTF） and time domain analysis of the response series and spectra in an extreme wave condition were conducted for the coupled system with the mooring lines and risers involved. These analyses were further validated by the physical model test results.
ISSN:1001-6058
1878-0342
1000-4874
DOI:10.1016/S1001-6058(08)60024-4