Fundamental Research on Undulating Wing Motion

本文研究了具有前进波的鱼类或鱼鳍状波动机翼运动，采用二维非定常CFD程序对机翼绕流场进行了数值模拟，主要结果如下。(1)通过与已知理论计算结果的比较，验证了CFD程序的正确性，对于恒定加速度平板、钝头形状，计算结果与理论计算结果吻合较好。(2)对绕船体剖面的瞬态运动进行了实验研究，并与计算结果进行了比较，两者吻合较好。(3)研究了鱼鳍的运动规律，取得了较好的效果，为在远程海洋航行器中的应用提供了依据。

Undulating wing motion like fish or fish fin was investigated.The motion has progressive wave.The 2D unsteady CFD code was used to solve the flow field around wing.The main results are as follows.(1) The validation of CFD code was done by comparing the known theoretical results.The agreements were satisfactory for constant accelerating flat plate, blunt shape.(2) The experiment was done for transient motion around ship section and compared with computation.The good agreement was obtained.(3) The fish fin motion was studied.The efficiency was not so bad.The results is promising for application to remote ocean vehicle.