半转叶轮水轮机载体平台多目标优化设计  

Multi-objective Optimization Design of Carrier Platform of Half-rotating Impeller Tidal Turbine

作　　者：于晓峰 刘聪 张旭成 孙承坤 王孝义[1] 张玉华[1] 邱支振[1] YU Xiaofeng;LIU Cong;ZHANG Xucheng;SUN Chengkun;WANG Xiaoyi;ZHANG Yuhua;QIU Zhizhen(School of Mechanical Engineering,Anhui University of Technology,Maanshan 243032,China)

机构地区：[1]安徽工业大学机械工程学院,安徽马鞍山243032

出　　处：《安徽工业大学学报（自然科学版）》2021年第3期282-289,共8页Journal of Anhui University of Technology（Natural Science）

基　　金：安徽省重点研究与开发计划项目(201904b11020030)。

摘　　要：针对半转叶轮水轮机载体平台横摇与纵摇对水轮机水动力性能的影响较大,设计一种双体浮式平台作为半转叶轮水轮机载体平台,采用计算流体动力学的方法计算水轮机横摇与纵摇许用角范围;基于频率响应法建立平台横摇与纵摇的幅值响应算子(RAO)理论分析模型,计算平台横摇与纵摇的RAO,通过比较RAO理论模型与数值模拟计算结果,验证理论模型的有效性;以平台横摇与纵摇的RAO为目标函数,以尺寸约束及平台的稳定性为约束条件,对载体平台主尺度参数进行多目标优化设计。结果表明:半转叶轮水轮机横摇许用角为(0°,8°),纵摇许用角为(0°,12°);优化后双体浮式平台的最大横摇角与纵摇角分别为7.49°与8.78°,均在半转叶轮水轮机横摇与纵摇的许用角范围之内,横摇与纵摇的RAO降幅分别为49.36%和42.46%,能够保证半转叶轮水轮机高效运转。In view of the fact that the rolling and pitching of the carrier platform of half-rotating impeller tidal turbine(HRITT)has great influence on the hydrodynamic performance of the turbine,a catamaran floating platform was designed as the carrier platform of HRITT.The allowable angle ranges of the rolling and pitching of turbine were calculated with the method of computational fluid dynamics.Based on the frequency response method,the theoretical analysis model of amplitude response operator(RAO)of the platform rolling and pitching was established,and the RAOs of rolling and pitching of platform were calculated.The validity of theoretical model was verified by comparing the results of RAO theoretical model and numerical simulation.Taking the RAO rolling and pitching of the platform as the objective function,the size constraint and the stability of the platform as the constraint conditions,the multi-objective optimization design of the main scale parameters of carrier platform was carried out.The results show that the allowable rolling angle of HRITT is from 0°to 8°,and allowable pitching angle of HRITT is from 0°to 12°.After optimization,the maximum roll angle and pitch angle are 7.49°and 8.78°respectively,which are within the allowable range of rolling and pitching angles of HRITT.The RAO reduction of rolling and pitching are 49.36%and 42.46%respectively,which can ensure the efficient operation of HRITT.

关 键 词：半转叶轮水轮机 双体浮式平台 横摇 纵摇 幅值响应算子 多目标优化 

分 类 号：TV74[水利工程—水利水电工程]