Efficient 3D numerical prediction of the pressure wave generated by high-speed trains entering tunnels

David Uystepruyst (1) , Mame William-Louis (1) , Emmanuel Creusé (2) , Serge Nicaise (3) , François Monnoyer de Galland (1)

1 LME - Laboratoire de Mécanique et d'Energétique
2 SIMPAF - SImulations and Modeling for PArticles and Fluids
3 LAMAV - Laboratoire de Mathématiques et leurs Applications de Valenciennes - EA 4015

The topic of this paper is to present a new methodology for the three-dimensional numerical simulation of the entrance of high-speed trains in a tunnel. The movement of the train is made thanks to a technique of sliding meshes and a conservative treatment of the faces between two domains. All parts of the development are thought with the aim to reduce the computational time. In particular, non reflecting boundary conditions for non-structured three-dimensional meshes are developed in order to limit the calculation domain. Validations of the methodology are presented on different test cases.

Mots clés: Computational fluid dynamics; Euler equations; Three-dimensional simulation; Cartesian mesh; Sliding grid; Non-reflecting boundary conditions; High-speed trains

Domaines: Analyse numérique [math.NA]

David Uystepruyst, Mame William-Louis, Emmanuel Creusé, Serge Nicaise, François Monnoyer de Galland. Efficient 3D numerical prediction of the pressure wave generated by high-speed trains entering tunnels. Computers and Fluids, 2011, 47 (1), pp.165-177. ⟨10.1016/j.compfluid.2011.03.005⟩. ⟨hal-00768640⟩