Coupled piezoelastic airfoil oscillators: Nonlinear oscillations

IF 4.3 2区工程技术 Q1 ACOUSTICS

Journal of Sound and Vibration Pub Date : 2025-06-06 DOI:10.1016/j.jsv.2025.119226

Nishant Nemani , Sergio Preidikman , Balakumar Balachandran

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引用次数: 0

Abstract

Limit-cycle oscillations of bodies with airfoil cross-sections is a subject of keen interest for engineering applications. In systems consisting of multiple such closely spaced bodies, the aerodynamic interactions amongst two or more such bodies can influence the system response. The nature of these interactions is examined with respect to variations in external parameters such as freestream speed and system parameters such as inter-oscillator spacing and the number of airfoil oscillators. By using a co-simulation scheme, which consists of a reduced order three degree-of-freedom piezostructural system and an unsteady vortex lattice method fluid solver, the effects of these parameters on the resulting aerodynamic loads on the system, the overall dynamic response, and the critical flutter speed are studied. In a three-airfoil oscillator system, the effect of the position of the inner airfoil oscillator is extensively studied with a focus on characterizing airfoil interactions and airfoil-wake interactions. For different parallel configurations, studies of bifurcations with respect to different control parameters are conducted.

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耦合压电弹性翼型振荡器：非线性振荡

具有翼型截面的物体的极限环振荡是一个工程应用中非常感兴趣的课题。在由多个这样的紧密间隔体组成的系统中，两个或更多这样的体之间的空气动力学相互作用会影响系统的响应。这些相互作用的性质是检查相对于变化的外部参数，如自由流速度和系统参数，如振子间距和翼型振荡器的数量。采用由降阶三自由度压电结构系统和非定常涡点阵法流体求解器组成的联合仿真方案，研究了这些参数对系统气动载荷、整体动力响应和临界颤振速度的影响。在三翼型振子系统中，广泛研究了内翼型振子位置的影响，重点研究了翼型相互作用和翼型尾迹相互作用的特性。针对不同的并联构型，研究了不同控制参数下的分岔问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Sound and Vibration 工程技术-工程：机械

CiteScore

9.10

自引率

10.60%

发文量

551

审稿时长

69 days

期刊介绍： The Journal of Sound and Vibration (JSV) is an independent journal devoted to the prompt publication of original papers, both theoretical and experimental, that provide new information on any aspect of sound or vibration. There is an emphasis on fundamental work that has potential for practical application. JSV was founded and operates on the premise that the subject of sound and vibration requires a journal that publishes papers of a high technical standard across the various subdisciplines, thus facilitating awareness of techniques and discoveries in one area that may be applicable in others.