哈尔滨工程大学学报2018，Vol.39Issue(2)：344-349,6.DOI:10.11990/jheu.201609050
被动式拍动翼轮机的能量采集性能实验研究
Experimental study on energy harvesting performance of passive flapping foil turbine
摘要
Abstract
A new type of passive flapping foil wind and tidal energy capturing generator is designed to study the en-ergy harvesting performance of a flapping foil turbine. The current pushes the foil to move up and down, which drives the crank shaft and generator. An angle magnifying gear mechanism is erected between the foil rotation shaft and the connecting rod,to optimize the pitch angle between the foil and the incoming flow. A test is conducted in a circulating water tunnel,and the energy harvesting performance with various current speeds and Strouhal Number St are studied. Experimental results show that the power is roughly the cube of the current velocity with the same St;while the current velocity has less influence on the energy harvesting efficiency,η. The efficiency increases and then decreases as St increases and reaches its maximum 26% when St =0.2. The unsteady motion of the flapping foil is numerically simulated,and a good agreement with experimental results is determined. A large magnitude of the effective angle of attack is found to cause dynamic stall and results in a decrease in efficiency when St < 0.2.关键词
拍动翼轮机/能量采集/水槽实验/数值模拟/斯特劳哈尔数/动态失速Key words
flapping foil turbine/energy harvesting/water tunnel experiment/numerical simulation/Strouhal num-ber/dynamic stall分类
能源科技引用本文复制引用
唐波,徐文华,许国冬..被动式拍动翼轮机的能量采集性能实验研究[J].哈尔滨工程大学学报,2018,39(2):344-349,6.基金项目
国家自然科学基金项目(11602067,51479044). （11602067,51479044）
