本文提出了一种新型的风能吸收装置——波动板。在一定的来流风速下，利用行波状运动的板，可以从风中吸取能量，将风能转化成机械能。在Re=4×105下，采用数值模拟方法研究了波长和振幅对波动板做功系数和风能利用率的影响，结果表明：在一定振幅和波长下，风能利用率和做功系数随着无量纲波速的增加，先增加后减小；在一定无量纲波速和波长下，随着振幅的增加，风能利用率和做功系数逐渐增加；在一定无量纲波速和振幅下，随着波长的增加，风能利用率和做功系数先增大后减小，存在一个最佳的波长使得风能利用率和做功系数同时达到最大值。

This paper puts forward a kind of new wind energy extraction device – traveling wavy plate. Using the traveling wavy motion, the plate can extract the energy from the wind and transfer the wind energy into the mechanical energy. The effect of the wavelength and amplitude on the power coefficient and energy extraction efficiency is studied numerically at Re=4×105. The result shows that under a certain amplitude and wavelength, with the increase of the dimensionless wave velocity, the power coefficient and energy extraction efficiency increase initially and decreases afterwards. Under a certain dimensionless wave velocity and wavelength, with the increase of the amplitude, the power coefficient and energy extraction efficiency increase gradually. Under a certain dimensionless wave velocity and amplitude, with the increase of the wavelength, the power coefficient and energy extraction efficiency increase gradually increase initially and decrease afterwards, There is a optimal wavelength making the energy extraction efficiency and power coefficient reach maximum at the same time.

TM614

国家自然科学基金（No.51536006, No. 91530111）；上海市科委科研计划项目（13DZ2260900）；上海理工大学流动控制与仿真重点实验室资助（D15013）