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Numerical simulation of the interaction between a nonlinear elastic structure and compressible flow by the discontinuous Galerkin method

Author

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  • Kosík, Adam
  • Feistauer, Miloslav
  • Hadrava, Martin
  • Horáček, Jaromír

Abstract

This paper is concerned with the numerical simulation of the interaction of compressible viscous flow with a nonlinear elastic structure. The flow is described by the compressible Navier–Stokes equations written in the arbitrary Lagrangian–Eulerian (ALE) form. For the elastic deformation the St. Venant–Kirchhoff model is used. In the space discretization the discontinuous Galerkin finite element method (DGM) is applied both for the flow problem in a time-dependent domain and for the dynamic nonlinear elasticity system. We show that the DGM is applicable to the discretization of both problems. As a new result we particularly present the application of the DGM to the discretization of the dynamic nonlinear elasticity problem and the DGM solution of the fluid–structure interaction (FSI). The applicability of the developed technique is demonstrated by several numerical experiments. The main novelty of the paper is the application of the DGM to the FSI problem using the model of compressible flow coupled with nonlinear elasto-dynamic system.

Suggested Citation

  • Kosík, Adam & Feistauer, Miloslav & Hadrava, Martin & Horáček, Jaromír, 2015. "Numerical simulation of the interaction between a nonlinear elastic structure and compressible flow by the discontinuous Galerkin method," Applied Mathematics and Computation, Elsevier, vol. 267(C), pages 382-396.
    • Handle: RePEc:eee:apmaco:v:267:y:2015:i:c:p:382-396
    DOI: 10.1016/j.amc.2015.02.057
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