| According to the environmental condition of a deep water block in South China Sea, this paper makes a type selection and gives hydrodynamic calculation and analysis to the Cell Spar platform.This paper has introduced the character of Spar especially Cell Spar in detail. Situation of Study and development tendency of heave plate which is a key part to Cell Spar platform has been gave. Then the paper introduces the theoretical calculation method of environmental load for example wave and ocean current. Frequency domain analysis and time domain analysis are used in the analysis of hydrodynamic calculation. According to the environmental condition of a deep water block in South China Sea and the requirement of work condition to the platform, the paper has confirmed the overall structure and the design of relevant module. And then the finite element model of this platform has been made. The analysis of heave response under the different design of heave plates has been calculated by the frequency domain method. And the paper analyses the heave response's RAO of the platform under different heave plate design. The paper analyses the sensitivity of heave response's RAO under different gap of heave plates. The hydrodynamic calculation of this Cell Spar has been done under survival condition, operating condition and transit condition. Mooring system, added dampers and added mass have been taken into account. The analysis of heave response under the different design of heave plates has been calculated by the time domain method. The paper gives the best design of this platform by the result of analysis, and the economical efficiency has been taken into account, In the end, the paper gives the change of Cog under the change of time in survival condition, work condition and transit condition.
|
PDF Full Text Request