A Parallel Multigrid Algorithm for Aeroelasticity Simulations
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This paper presents the development of a multigrid parallel algorithm for a fully nonlinear aeroelastic analysis. The aeroelastic model consists of: (1) a nonlinear structural model that captures in-plane, out-of-plane, and torsional couplings, (2) an unsteady, viscous aerodynamic model that captures compressible flow effects for transonic flows with shock/boundary layer interaction, and (3) a solution methodology that assures synchronous interaction between the nonlinear structure and the fluid flow, including a consistent geometric interface between the highly-deforming structure and the flow field. A parallel computation algorithm based on message-passing interface was developed for the flow solver. This parallel computation algorithm and the grid generator of the flow solver were developed concurrently to improve the efficiency of parallel computation. A three-level multigrid algorithm was implemented in the flow solver, to further reduce the computational time. The validation of the aeroelastic solver was done using experimental results of the F-5 wing and the Nonlinear Aeroelastic Test Apparatus (NATA) wing.
author list (cited authors)
Gargoloff, J., Cizmas, P., Strganac, T., & Beran, P.