Numerical and Experimental Study of Active Flutter Suppression With Piezoelectric Device for Transonic Cascade
Numerical and Experimental Study of Active Flutter Suppression With Piezoelectric Device for Transonic Cascade
复制标题
跨音速级联压电器件主动颤振抑制的数值与实验研究
DOI：
10.1115/gt2008-51467
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Benjamin Keim
中科院分区：
文献类型：
--
作者：
Toshinori Watanabe;J. Kazawa;S. Uzawa;Benjamin Keim
对压电装置主动抑制跨音速叶栅颤振的可能性进行了数值和实验研究。在数值研究中，以前提出的控制方法，其中叶片后缘主动振荡进行了详细的分析，以实际应用的发展与流固耦合的数值方法。从结果中，控制的效果得到了证实，并揭示了抑制来自通道激波的振荡行为的适当变化。在跨音速叶栅风洞中进行了实验研究，验证了该方法对叶片振动稳定性的显著影响。测量了粘贴压电元件的叶片主动振动引起的非定常气动力，并将其与引起颤振失稳的非定常诱导力叠加。结果表明，在叶片振动与压电主动振动之间存在适当相位差的情况下，叶片的颤振抑制具有明显的稳定效果。然而，如果相位不合适，则发现主动振荡会产生不稳定效应。
Possibility of active suppression for transonic cascade flutter with piezoelectric device was studied both numerically and experimentally. In the numerical study, a previously proposed control method in which the blade trailing edges were actively oscillated was analyzed in detail toward realistic application by a developed numerical method with flow-structure coupling. From the results, the effect of the control was confirmed, and the suppression was revealed to come from the appropriate change in the oscillatory behavior of the passage shock. Experimental study was conducted in linear cascade wind tunnel under transonic flow condition to verify that the method realized substantial effect on stability of the blade oscillation. Unsteady aerodynamic forces induced by the active oscillation of a blade on which piezoelectric devices were glued were measured and superposed with the unsteady induced force causing flutter instability. The results showed a distinctive stabilization effect of flutter suppression in the case with appropriate phase difference between original blade vibration and the active oscillation of the piezoelectric device. The active oscillation was, however, found to generate destabilization effect if the phase was inappropriate.Copyright © 2008 by ASME