兼具发电功能的张力腿平台系统动力响应研究  

Dynamic response of tension leg platform with additional power generation function

作　　者：李振眠 余杨[1,2] 余建星[1,2] 张晓铭 常雪莹 徐立新[1,2] LI Zhen-mian;YU Yang;YU Jian-xing;ZHANG Xiao-ming;CHANG Xue-ying;XU Li-xin(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China;Tianjin Key Laboratory of Port and Ocean Engineering,Tianjin University,Tianjin 300072,China)

机构地区：[1]天津大学水利工程仿真与安全国家重点实验室,天津300072 [2]天津大学天津市港口与海洋工程重点实验室,天津300072

出　　处：《船舶力学》2023年第2期195-207,共13页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51779173);高新技术船舶科研项目(MC-202030-H04)。

摘　　要：本文针对一种由张力腿平台-内嵌式波能发电装置组成的多功能张力腿平台系统,考虑平台本体有限位移、六自由度运动耦合以及气室空气压缩性等非线性因素,建立系统的耦合动力学方程。采用变步长四阶-五阶龙哥库塔算法编写了数值仿真程序,计算得到了包括平台本体六个自由度运动、四个U型振荡液柱液面变化和八个气室-涡轮组的气室压力的响应。通过文献对比,验证了水动力模型和计算程序的正确性。计算结果表明:工作海况中振荡液柱液面变化能有效引起气室振荡;张力腿平台系统的动力响应满足油气生产作业要求。不同节流孔板开孔率、不同气室高度敏感性分析表明系统的运动性能稳定。建议发电系统开启时保持节流孔板完全打开和较小的气室高度。This paper focuses on a tension leg platform(TLP)-embedded wave energy converters system with an additional energy production function. Considering nonlinear factors such as TLP hull finite displacement,six-degree freedom motion coupling and air compressibility, the coupled dynamic equations of the system were established. The coupled dynamic equations were written as a simulation program and solved by the four-order Runge-Kutta algorithm with variable time steps. The six-degree freedom of the TLP, the variations of the liquid level of the four U-shaped oscillating liquid columns and the air chamber pressure responses of eight air chamber-turbine groups were calculated. The correctness of the wave force calculation was verified through literature comparison. Results show that the oscillating liquid can effectively cause the fluctuation of the air chamber and that the hydrodynamic performance of the novel system can meet the offshore production operation requirements. The influence analysis of orifice ratios and air chamber heights proves hydrodynamic stabilities of the system reliable, A fully-opened orifice and a small chamber height are recommended when the embedded wave energy converter is working.

关 键 词：多功能浮式平台 波浪发电 振荡液柱 多体动力学 水动力稳定性 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]