Simulation and Analysis of Multidirectional galloping Wind Energy Collector Based on Cylindrical Beam
To achieve multi-directional wind energy collection,a galloping wind energy collector based on piezoelectric circular tubes and blunt end bodies is proposed.The relationship between the mode of the collector and the output performance of the piezoe-lectric circular tube and the vibration frequency,resistance,and excitation force is analyzed through multi-physical field coupling simulation.The simulation results show that the first and second order natural frequencies of the square column blunt body collector are 14.26Hz,and higher output can be obtained when operating near the natural frequency.There is an optimal load resistance of 3.16MΩ.The output voltage of piezoelectric circular tube increases with the increase of excitation force.The two-dimensional flow field simulation results of a square cylindrical blunt body show that the square cylindrical structure can be subjected to corresponding lateral aerodynamic forces at various angles,realizing the conversion of multi-directional wind energy.The three-dimensional fluid-structure coupling simulation analysis results show that due to the symmetrical characteristics of the cylindrical beam,the collector can generate oscillations when subjected to two-dimensional plane wind in different directions,verifying the multidirectional performance of the collector.
piezoelectric circular tubecylindrical beamswind energy collectormultidirectional wind energy
万方数据
维普
