... ABSTRACT In the present work, a HOS-CFD coupled method is validated with wave-structure interaction. The HOS-CFD method is applied to simulate a fixed CALM buoy in regular waves with overset grids. Firstly, a periodic wave simulation is carried out to make a better parameter choice in HOS-CFD...

... ABSTRACT The deepwater offloading system mainly composed of oil offloading line (OOL), mooring system and a catenary anchor leg mooring (CALM) buoy is widely used in the offshore oil and gas field development in West Africa and other sea areas. The coupling dynamics of the system must be taken...

... lumped mass model are connected to the right side and left side of FPSO and CALM buoy, respectively. By analyzing the fatigue contribution of different waves in West Africa Sea and the influence induced by the OOLs' self-characteristics, it is discovered that the surge motion of the CALM buoy is a main...

... ABSTRACT The single point calm buoy has been developed for many years in the word, but there are only two calm buoys system used in China, Maoming and Weizhou. DMAR Engineering Company did a research project about Calm Buoy for the further potential application in China The paper first...

... ABSTRACT In this paper, the hydrodynamic calculation methods based on radiation/diffraction theory and slender body theory were modified respectively. For the former, the potential flow loadings which involved the radiation force of CALM buoy, the first-order and second-order wave force...

... at calibrating and validating drag coefficients for the heave plate, based on a methodology developed for CALM buoys. These coefficients are intended to be used in DeepLinesTMWind, an aero-hydro-servo-elastic solver, combined with potential theory to model the floater behavior. Results show that the methodology...

... Frequency domain analysis is used to solve a complete catenary anchor leg mooring (CALM) buoy system comprised of the buoy, its moorings lines and the export lines. The advantage of such an approach is that it is very fast to run and allows large parametric studies in relatively short times...

... ABSTRACT The heave, roll and pitch damping of a CALM buoy contains linear contributions (wave radiation) and quadratic contributions (drag loads). The linear damping can be determined by diffraction-radiation calculations, but for the quadratic contributions model test data are required...

... derived from the "Offloading Calm Buoy JIP" and several projects as Girassol, Kizomba and Erha. A particular attention is paid on hydrodynamic damping derived from model tests and/or CFD. A methodology, based on a full coupled analysis, is proposed to assess the fatigue damage of the system. The way...

... ABSTRACT Environmental conditions can severely affect offshore operations involving Cateneary Anchor Leg Mooring Buoys (CALM buoys). Operational requirements of tanker loading using a CALM buoy are complex and the dominant Metocean forces on vessels can change from wind induced to surface...