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Publication . Article . 2016

An energy method for flutter analysis of wing using one-way fluid structure coupling

Jize Zhong; Zili Xu;
Closed Access
Published: 14 Sep 2016 Journal: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, volume 231, pages 2,560-2,569 (issn: 0954-4100, eissn: 2041-3025, Copyright policy )
Publisher: SAGE Publications
Abstract
In this paper, an energy method for flutter analysis of wing using one-way fluid structure coupling was developed. To consider the effect of wing vibration, Reynolds-averaged Navier–Stokes equations based on the arbitrary Lagrangian Eulerian coordinates were employed to model the flow. The flow mesh was updated using a fast dynamic mesh technology proposed by our research group. The pressure was calculated by solving the Reynolds-averaged Navier–Stokes equations through the SIMPLE algorithm with the updated flow mesh. The aerodynamic force for the wing was computed using the pressure on the wing surface. Then the aerodynamic damping of the wing vibration was computed. Finally, the flutter stability for the wing was decided according to whether the aerodynamic damping was positive or not. Considering the first four modes, the aerodynamic damping for wing 445.6 was calculated using the present method. The results show that the aerodynamic damping of the first mode is lower than the aerodynamic damping of higher order modes. The aerodynamic damping increases with the increase of the mode order. The flutter boundary for wing 445.6 was computed using the aerodynamic damping of the first mode in this paper. The calculated flutter boundary is consistent well with the experimental data.
Subjects by Vocabulary

Microsoft Academic Graph classification: Energy method Vibration Wing Fluid structure coupling Aerodynamic force Pitching moment Flutter Engineering business.industry business Structural engineering Aerodynamic potential-flow code

arXiv: Physics::Fluid Dynamics

Subjects

Mechanical Engineering, Aerospace Engineering

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