Two efficient staggered algorithms for the serial and parallel solution ofthree-dimensional nonlinear transient aeroelastic problems

Partitioned procedures and staggered algorithms are often adopted for the s olution of coupled fluid/structure interaction problems in the time domain. In this paper, we overview two sequential and parallel partitioned procedu res that are popular in computational nonlinear aeroelasticity, and address their limitation in terms of accuracy and numerical stability. We propose two alternative serial and parallel staggered algorithms for the solution o f coupled transient aeroelastic problems, and demonstrate their superior ac curacy and computational efficiency with the flutter analysis of the AGARD Wing 445.6. We contrast our results with those computed by other investigat ors and validate them with experimental data. (C) 2000 Elsevier Science S.A . All rights reserved.