Numerical method of aeroelasticity based on radial basis function interpolation
Lin Yanzhong;Chen Bing;Xu Xu;School of Astronautics,Beijing University of Aeronautics and Astronautics;
Proper and effective means of moving mesh and data exchange are the key points for aeroelasticity analysis. Radial basis function interpolation was introduced and used for aeroelasticity simulation,and the way how it was used in mesh deformation and data exchange was proposed. A computational method coupling computational fluid dynamics(CFD) and computational structure dynamics(CSD) was employed in solving the AGARD 445. 6 wing flutter problem. In order to obtain different vibration phenomena including amplitude attenuation,equal amplitude resonance and amplitude increase,solutions under several upper stream velocity conditions were computed. Flutter speed and flutter frequency results are both in accordance with experimental data,which means that the radial basis function interpolation method is valid and can be used in aeroelasticity analysis.