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

*(English)*Zbl 0991.74069Summary: Partitioned procedures and staggered algorithms are often adopted for the solution of coupled fluid/structure interaction problems in the time domain. In this paper, we overview two sequential and parallel partitioned procedures 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 of coupled transient aeroelastic problems, and demonstrate their superior accuracy and computational efficiency with the flutter analysis of AGARD Wing 445.6. We compare our results with those computed by other investigators, and validate them with experimental data.

##### MSC:

74S05 | Finite element methods applied to problems in solid mechanics |

74S10 | Finite volume methods applied to problems in solid mechanics |

74F10 | Fluid-solid interactions (including aero- and hydro-elasticity, porosity, etc.) |

##### Keywords:

serial algorithms; parallel algorithms; staggered algorithms; coupled fluid/structure interaction; nonlinear aeroelasticity; flutter; AGARD Wing 445.6
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\textit{C. Farhat} and \textit{M. Lesoinne}, Comput. Methods Appl. Mech. Eng. 182, No. 3--4, 499--515 (2000; Zbl 0991.74069)

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