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采用Fluent求解绕二维振荡翼层流流场的非定常、不可压缩Navier-Stokes方程,将域动网格策略用在滑移交界面内流体域,使之与翼一起运动,该方法可保证核心区域网格质量。研究了Re=1 100、θ0=76.33°、y0=5、k=0.88时,俯仰轴位置对NACA0015振荡翼气动特性和能量捕获性能的影响,以及升沉——俯仰相位差和俯仰轴位置对系统的耦合影响。结果表明,俯仰轴位置会影响振荡翼的升力特性、俯仰力矩特性及能量捕获性能,当系统因俯仰轴位置偏离平均压力中心而造成能量捕获性能下降时,改变升沉——俯仰相位差可改善系统的能量捕获性能。
Fluent is used to solve the unsteady and incompressible Navier-Stokes equations around the laminar two-dimensional oscillating laminar flow field, and the domain moving grid strategy is used in the fluid domain in the gliding interfacial boundary so as to move along with the wing. This method can ensure that the core Regional grid quality. The effects of pitch axis position on the aerodynamic characteristics and energy trapping performance of NACA0015 oscillating wing were studied when Re = 1 100, θ0 = 76.33 °, y0 = 5 and k = 0.88, and the relationship between heave-pitch phase difference and pitch axis position System coupling effects. The results show that the position of pitch axis will affect the lift, pitch moment and energy trapping performance of the oscillating wing. When the system’s energy capture performance declines due to the deviation of the pitch axis from the average pressure center, the change of the ascending-tilting phase difference can be improved System’s energy capture performance.