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

• Published in: Computers & fluids 2011-08, Vol.47 (1), p.165-177
• Main Authors: Uystepruyst, David, William-Louis, Mame, Creusé, Emmanuel, Nicaise, Serge, Monnoyer, François
• Format: Article
• Language: English
• Subjects: Applied sciences; Buildings. Public works; Cartesian mesh; Computational fluid dynamics; Computational methods in fluid dynamics; Computer simulation; Euler equations; Exact sciences and technology; Finite element method; Fluid dynamics; Fundamental areas of phenomenology (including applications); Ground, air and sea transportation, marine construction; High speed trains; Mathematical models; Mathematics; Methodology; Non-reflecting boundary conditions; Numerical Analysis; Numerical prediction; Physics; Railway transportation and traffic; Sliding grid; Three dimensional; Three-dimensional simulation; Tunnels (transportation); Tunnels, galleries
• ISSN: 0045-7930; 1879-0747
• DOI: 10.1016/j.compfluid.2011.03.005

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.