波动鳍刚度对尾迹区域摆动翼推进性能的影响  

Influence on the Propulsion Performance of an Oscillating Plate in the Wake of Undulating Fins with Different Rigidity

作　　者：何建慧[1] 贾来兵[2] 

机构地区：[1]台州职业技术学院,浙江台州318000 [2]中国科学技术大学,安徽合肥230027

出　　处：《系统仿真技术》2015年第2期106-113,共8页System Simulation Technology

基　　金：浙江省教育厅科研课题资助项目(Y201122502);台州职业技术学院一般课题资助项目(2015YB02)

摘　　要：为了弄清波动鳍刚度对位于其尾迹区域摆动翼推进性能的影响,基于计算流体动力学(CFD)原理,首先研究了摆动翼前端有无波动鳍干扰流动对其推进力产生的影响,进而分析波动鳍在四种不同鳍面刚度相同运动学参数下对摆动翼推进性能的影响情况,最后给出某一刚度下不同运动学参数对摆动翼推进性能的影响,并从涡动力学角度解释内在规律。通过计算发现:前端波动鳍产生的反卡门涡街与位于其后的摆动翼前缘涡旋转方向相反,使前缘涡强度减弱或消失;相同运动学参数下随着波动鳍刚度的增加,摆动翼的推进力随之降低;另外,摆动翼推进力随波动鳍的频率和摆幅的增大而减小。In order to investigate the propulsion performance of an oscillating plate in the wake of undulating fins with different rigidity. Base on Computational Fluid Dynamic （CFD）, the propulsion force generated by the oscillating plate with and without anterior undulating fin was analyzed. Then, a further comparison was carried out to illustrate the influence of four fin rigidity on the propulsion performance of the oscillating plate under the same kinematic parameters. Finally, the influence of variable kinematic parameters on the performance of the oscillating plate under the same anterior undulating fin rigidity was also presented. The inherent laws of these phenomena were illustrated from the perspective of vortex dynamics. We conclude that：the reversed Kaman vortex street from the anterior undulating fin is in the direction opposite to that generated by the leading edge of the oscillating plate, which causes the vortex intensity weakened or even disappeared. The propulsion force of the oscillating plate decreases with the increase of undulating fin rigidity under the same kinematic parameters. In addition, the propulsion force of the oscillating plate also decreases with the increase of frequency and amplitude of undulating fin.

关 键 词：波动鳍 刚度 摆动翼 推进性能 数值计算 

分 类 号：TP242.6[自动化与计算机技术—检测技术与自动化装置]