Abstract
In this paper, we highlight some key elements of our approach to the solution of large-scale three-dimensional nonlinear aeroelastic problems on high performance computational platforms. These include a three-field arbitrary Lagrangian-Eulerian (ALE) finite volume/element formulation for the coupled fluid/structure problem, the derivation of a geometric conservation law for three-dimensional flow problems with moving boundaries and unstructured deformable meshes, and the solution of the corresponding coupled semi-discrete equations with a partitioned procedure. In particular, we present a family of mixed explicit/ implicit staggered solution algorithms, and discuss them with particular reference to accuracy, stability, subcycling, and parallel processing. We describe a general framework for the solution of coupled aeroelastic problems on heterogeneous and/or parallel computational platforms, and illustrate it with some preliminary numerical investigations on an iPSC-860, a Paragon XP S , and a Cray T3D massively parallel systems of the aerodynamics and aeroelastic transient response of a three-dimensional wing in transonic airstreams.
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