Journal
MATHEMATICAL PROBLEMS IN ENGINEERING
Volume 2012, Issue -, Pages -Publisher
HINDAWI LTD
DOI: 10.1155/2012/152123
Keywords
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Funding
- National Natural Science Foundation of China [10902082, 91016008]
- New Faculty Research Foundation of XJTU
- Fundamental Research Funds for the Central Universities [xjj20100126]
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It is not easy for the system identification-based reduced-ordermodel (ROM) and even eigenmode based reduced-order model to predict the limit cycle oscillation generated by the nonlinear unsteady aerodynamics. Most of these traditional ROMs are sensitive to the flow parameter variation. In order to deal with this problem, a support vector machine-(SVM-) based ROM was investigated and the general construction framework was proposed. The two-DOF aeroelastic system for the NACA64A010 airfoil in transonic flow was then demonstrated for the new SVM-based ROM. The simulation results show that the new ROM can capture the LCO behavior of the nonlinear aeroelastic system with good accuracy and high efficiency. The robustness and computational efficiency of the SVM-based ROM would provide a promising tool for real-time flight simulation including nonlinear aeroelastic effects.
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