An Improved CFD/CSD Coupled System Design and Application for Aeroelasticity
- Paper number
IAC-09.C2.I.12
- Author
Mr. Xiao-min An, College of Astronautics,Northwestern Polytechnical University, China
- Year
2009
- Abstract
The data information transfer and time marching strategies between Computational fluid dynamics (CFD) and Computational structural dynamics (CSD) play crucial roles in aeroelastic analysis in time domain. An improved CFD/CSD coupled system is designed, which includes: an interpolation method, based on BEM (boundary element method) is developed to match the CFD and CSD grid systems. This method can transform structural displacements and aerodynamic loads by one matrix and its transpose which can be used universally in Fluid Structural Interaction Solution by keeping energy conservation; an improved loosely coupled algorithm is designed which not only mains CFD and CSD module independence, but also improves computing accuracy and efficiency. Then, the new technique is performed on two dimensional extrapolation and aeroelastic response of AGARD445.6 wing, the results illustrate that the improved system have superior accuracy.
- Abstract document
- Manuscript document
(absent)