ISSN:2164-6457 (print)
ISSN:2164-6473 (online)
Journal of Applied Nonlinear Dynamics
Miguel A. F. Sanjuan (editor), Albert C.J. Luo (editor)
Miguel A. F. Sanjuan (editor)

Department of Physics, Universidad Rey Juan Carlos, 28933 Mostoles, Madrid, Spain

Email: miguel.sanjuan@urjc.es

Albert C.J. Luo (editor)

Department of Mechanical and Industrial Engineering, Southern Illinois University Ed-wardsville, IL 62026-1805, USA

Fax: +1 618 650 2555 Email: aluo@siue.edu

Fluid-Structure Coupling Effects on the Aerodynamic Performance of Airfoil with a Local Flexible Structure at Low Reynolds Number

Journal of Applied Nonlinear Dynamics 4(3) (2015) 305--312 | DOI:10.5890/JAND.2015.09.010

Wei Kang$^{1}$, Min Xu$^{1}$, Jia-Zhong Zhang$^{2}$

$^{1}$ School of Astronautics, Northwestern Polytechnical University, Xi’an, Shaanxi Province, 710072, P.R. of China

$^{2}$ School of Energy and Power Engineering, Xi’an Jiaotong University, Shaanxi Province, 710049, P.R. China

Abstract

Foreign Object Debris (FOD) is debris or article alien, which may A fluid structure interaction method for an airfoil with a local flexible structure is presented for flow control of Micro Air Vehicles. An improved ALE-CBS scheme is developed for unsteady viscous flow coupling in combination with the theory of shallow arch with large deformation. After the verification of the presented algorithm, the method is used to study the interaction between flow and airfoil with a local flexible structure with different elastic stiffness. The momentum and energy exchange are investigated to reveal the unsteady coupling effects on aerodynamic performance. The results show that the coupling between fluid and structure enhances the momentum and energy exchange from main flow into the boundary layer. It induces the separation bubble moving downstream, and decreases the negative pressure in the separation zone on the upper surface, which leads to lift enhancement. The utilization of local flexible structure can be considered as an effective flow control technique for enhancement of the aerodynamic performance of Micro Air Vehicles.

Acknowledgments

The research is supported by the National Natural Science Foundation of China (Grant No. 11402212), the Fundamental Research Funds for the Central Universities, No. 3102014JCQ01002 and the National High Technology Research Program of China (863 Program), No. S2012AA052303.

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