Fundamental Research on Undulating Wing Motion

研究了像鱼或鱼鳍一样的波动翼运动。运动呈递进波。采用二维非定常CFD程序对机翼周围流场进行求解。主要结果如下：(1)通过对比已知理论结果，对CFD代码进行验证。对于常加速平板，钝形板，其协议是令人满意的。(2)进行了绕船截面瞬态运动实验，并与计算结果进行了比较。双方达成了良好的协议。(3)对鱼鳍运动进行了研究。效率还不错。研究结果对远程海洋航行器的应用具有广阔的前景。

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.