The internal turret mooring system for oil production storage vessels is a developing type ofoffshore floating production system suitable for deep water and harsh environmental application. In this paper, some achieve...The internal turret mooring system for oil production storage vessels is a developing type ofoffshore floating production system suitable for deep water and harsh environmental application. In this paper, some achievements in our research work are presented. The description includes: dynamic analysis of mooring system, research on performance of turret assembly, influence of vessel dimensions and hull forms on mooring performance, model tests under combined action of environmental forces in basin, and hull structural strength analysis.展开更多
The present research has been made on the Disconnectable Riser Turret Mooring (DRTM) System which could be used in the oil fields of the South China Sea. The selection of the principal dimensions and their effect on t...The present research has been made on the Disconnectable Riser Turret Mooring (DRTM) System which could be used in the oil fields of the South China Sea. The selection of the principal dimensions and their effect on the characteristics of the system have been discussed. By means of a computer program, the synthetical appraisement has been made in the ultimate mooring condition, disconnecting condition and reconnecting condition respectively. Mean-while, a comparison has been made between DRTM system and CALM system. It has been indicated that DRTM is suitable for the South China Sea and has technological and economical preponderance.展开更多
In the present study, the dynamic response of a coupled SPM-feeder-cage system under irregular waves and shear currents is analyzed. A numerical model is developed by using the commercial software Orca Flex. Hydrodyna...In the present study, the dynamic response of a coupled SPM-feeder-cage system under irregular waves and shear currents is analyzed. A numerical model is developed by using the commercial software Orca Flex. Hydrodynamics coefficients of the vessel are calculated by using a 3D diffraction/radiation panel program. First- and second-order wave forces are included in the calculations. Morison equation is used to compute the drag force on line elements representing the net. Drag coefficients are determined at every time step in the simulation considering the relative normal velocity between the structural elements and the fluid flow. The dynamic response of the coupled system is analyzed for various environments and net materials. The results of the study show the effects of solidity ratio of the net and vertical positions of the cage on the overall dynamic response of the system, confirming the viability of this type of configuration for future development of offshore aquaculture in deep waters.展开更多
基金Project supported by special scientific research foundation for doctoral subjects
文摘The internal turret mooring system for oil production storage vessels is a developing type ofoffshore floating production system suitable for deep water and harsh environmental application. In this paper, some achievements in our research work are presented. The description includes: dynamic analysis of mooring system, research on performance of turret assembly, influence of vessel dimensions and hull forms on mooring performance, model tests under combined action of environmental forces in basin, and hull structural strength analysis.
文摘The present research has been made on the Disconnectable Riser Turret Mooring (DRTM) System which could be used in the oil fields of the South China Sea. The selection of the principal dimensions and their effect on the characteristics of the system have been discussed. By means of a computer program, the synthetical appraisement has been made in the ultimate mooring condition, disconnecting condition and reconnecting condition respectively. Mean-while, a comparison has been made between DRTM system and CALM system. It has been indicated that DRTM is suitable for the South China Sea and has technological and economical preponderance.
基金Kampachi Farms LLC for their support to complete this work and for all the technical information provided to complete the numerical model
文摘In the present study, the dynamic response of a coupled SPM-feeder-cage system under irregular waves and shear currents is analyzed. A numerical model is developed by using the commercial software Orca Flex. Hydrodynamics coefficients of the vessel are calculated by using a 3D diffraction/radiation panel program. First- and second-order wave forces are included in the calculations. Morison equation is used to compute the drag force on line elements representing the net. Drag coefficients are determined at every time step in the simulation considering the relative normal velocity between the structural elements and the fluid flow. The dynamic response of the coupled system is analyzed for various environments and net materials. The results of the study show the effects of solidity ratio of the net and vertical positions of the cage on the overall dynamic response of the system, confirming the viability of this type of configuration for future development of offshore aquaculture in deep waters.
