Numerical study for energy harvesting of the tandem wavy cylinders in cross flow

[摘要] In order to make the bladeless wind turbine better convert wind energy into electric energy, this paper based on the method of passively controlling vortex-induced vibration, by changing the shape of the cylindrical surface, selecting three different parameters of the wavy cylinder (λ/Dm=6, /Dm=0.15; λ/Dm=2, /Dm=0.15, λ/Dm=2, /Dm=0.3), and performing a numerical simulation at Re=100. The results show that the wavy cylinder of λ/Dm=2, /Dm=0.15 is more susceptible to induced vibration. Compared to straight cylinders, the wavy cylinder of λ/Dm=2, /Dm=0.15 have a wider range of lock-in and a larger amplitude.

[发布机构] School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan, China^1;Continental Automotive Electronics Co., Ltd., Wuhu, China^2

[效力级别] 材料科学

[关键词] Cross flows;Cylindrical surface;Electric energies;Induced vibrations;Lock-in;Vortex induced vibration