波浪作用下基于不同负载的一种Savonius型水轮机捕能性能研究  

Research on energy harvesting performance of a Savonius turbine under wave action based on different loads

作　　者：黄炎晨 黄方平[2] 刘静[1] HUANG Yanchen;HUANG Fangping;LIU Jing(Jiangxi University of Science and Technology, Ganzhou 341000, China;Ningbo Tech University, Ningbo 315100, China)

机构地区：[1]江西理工大学,江西赣州341000 [2]浙大宁波理工学院,浙江宁波315100

出　　处：《海洋工程》2022年第2期118-129,共12页The Ocean Engineering

基　　金：国家自然科学基金重点项目(51605431);宁波市科技重大科技专项(2015C110005,2015C110015)。

摘　　要：通过水轮机捕能是当前常用的海洋能利用方式之一。桨叶作为水轮机关键部件,其性能一直是研究的重点。针对目前波浪条件下带负载运转的Savonius型水轮机相关捕能性能研究较少的情况,采用数值仿真方法,结合对应工况条件的物理试验,研究了一种Savonius型水轮机在不同波浪环境下带负载运转的捕能性能。采用Star CCM+仿真软件,建立数值波浪水池,设置环境参数,划分网格调整变量进行水轮机运转的水动力模型数值研究。在造波试验水池中利用推板改变波浪周期与波高,进行水轮机运转的物理试验。采集在不同负载下水轮机桨叶的转速和扭矩数据,计算并分析功率等参数,总结变化趋势,评价捕能效果。研究发现水轮机在1.6 s的波浪周期条件下,桨叶承受1.5 N·m负载时达到最佳捕能效果,其功率为23 W。为实际海域中水轮机桨叶的结构设计研究和相关工程应用提供参考。Capturing energy by hydraulic turbine is one of the common ways to utilize ocean energy.As the key component of the hydraulic turbine,the performance of blade has always been the focus of research.At present,there are few researches on the energy harvesting performance of Savonius turbine with load in wave environment.The numerical simulation method is used in combination with the physical test with corresponding working conditions to study the energy harvesting performance of a Savonius turbine under different wave conditions.The Star CCM+simulation software is used to establish the numerical wave pool,to set the environmental parameters,to divide the grid and adjust the variables for the numerical simulation on hydrodynamics of the turbine operation.In the wave-making test pool,the push plate is used to change the wave period and height so as to carry out the physical test of turbine operation.It is found that under the condition of 1.6 s wave period,the best energy harvesting effect is achieved when the blade bears 1.5 N·m load,and its power is 23 W.This study provides a reference for the structural design and application of turbine blades in the actual sea area.

关 键 词：Savonius型水轮机 捕能性能 海洋能 波浪周期 桨叶 扭矩系数 能量转换效率 

分 类 号：TV748[水利工程—水利水电工程]