Hits:

Indexed by:期刊论文

Date of Publication:2011-12-01

Journal:Journal of Hydrodynamics

Included Journals:EI、PKU、ISTIC、CSCD、SCIE、Scopus

Volume:23

Issue:6

Page Number:697-708

Key Words:Deep Draft Multi Spar (DDMS) platform; dynamic response; wave groups; current fources

Abstract:Coupled dynamic analysis of the Deep Draft Multi-Spar (DDMS) platform and the mooring system under the action of waves and current is carried out in the time domain. Using a geometrically nonlinear finite element method, the mooring-line dynamics is simulated based on the total Lagrangian formulation. Wave groups are obtained by the JONSWAP spectrum and an empirical wave envelope spectrum involving two envelope-based factors Group Height Factor (GFH) and Group Length Factor (GLF). The results show that the wave groups have a significant effect on the motion responses of the platform and the mooring line tensions.