Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 12, 2022 - November 13, 2022
We investigated the phase difference and frequency ratio effect on the thrust and lift coefficient of oscillating foil in a periodic flow. The periodic flow is the freestream oscillating in the streamwise direction. The frequency ratio is the ratio of foil frequency to freestream one. The thrust and lift coefficients were obtained using OpenFOAM v8 under the conditions of Reynolds number of 4066 and frequency ratio of 1, 2, and 3. We found that the thrust increases with increasing frequency ratio. Furthermore, the effect of phase difference on lift coefficient is relatively small at the frequency ratio of 2 and 3 under the present condition. We also found the correlation between forces and wake velocity.
