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arXiv · 2504.05037

Optimizing flow control with ensemble Kalman method for mitigating flow-induced vibration

Liu Yi·Wang Shizhao·Zhang Xin-Lei·He Guowei
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Abstract

The ensemble Kalman method is introduced for optimizing flow control strategies in order to mitigate the flow-induced vibration of structures. Different types of control strategies such as passive control, open-loop active control, and closed-loop active control are tested, showing the flexibility of the method in flow control optimization. The ensemble Kalman method is first tested to mitigate vortex shedding of flows around a circular cylinder by optimizing the placement of small cylinders downstream. Further, the method is assessed to suppress shock buffeting over the NACA 0012 airfoil by optimizing the movement of a compliant aileron. Our results for all test cases show that the ensemble-based method can effectively find optimal control strategies that significantly reduce the vibrations of aerodynamic force, and can be a useful alternative for flow control optimization, due to its merits in non-intrusiveness and ease of implementation.

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Liu Yi, Wang Shizhao, Zhang Xin-Lei, He Guowei. 2025-04-07. Optimizing flow control with ensemble Kalman method for mitigating flow-induced vibration. https://arxiv.org/abs/2504.05037

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