Coupling of CFD software for the computation of unsteady compressible flows in tunnel networks

• Unité de recherche: INNOSUISSE
• Numéro de projet: 9068.1;7 PFES-ES
• Titre du projet anglais: Coupling of CFD software for the computation of unsteady compressible flows in tunnel networks

Description succincte (Anglais)

Coupling of CFD software for the computation of unsteady compressible flows in tunnel networks

Description succincte (Français)

Coupling of CFD software for the computation of unsteady compressible flows in tunnel networks

Résumé des résultats (Abstract) (Anglais)

A coupled 1D/3D flow solver is developed for tunnel airflow simulations starting from existing 1D and 3D codes: the 3D solver is used around the domain to be studied where a detailed analysis is necessary (i.e. fire smoke propagation, pressure fields around a train). The inflow and outflow boundary conditions for the 3D solver are given by the 1D solver which includes the whole tunnel network with shafts, by-passes, possible other vehicles, etc. Such a tool can be profitably exploited in the design phase of underground metro lines, railway and road tunnels in order to assess aerodynamics, ventilation, thermal and fire issues.

Résumé des résultats (Abstract) (Français)

A coupled 1D/3D flow solver is developed for tunnel airflow simulations starting from existing 1D and 3D codes: the 3D solver is used around the domain to be studied where a detailed analysis is necessary (i.e. fire smoke propagation, pressure fields around a train). The inflow and outflow boundary conditions for the 3D solver are given by the 1D solver which includes the whole tunnel network with shafts, by-passes, possible other vehicles, etc. Such a tool can be profitably exploited in the design phase of underground metro lines, railway and road tunnels in order to assess aerodynamics, ventilation, thermal and fire issues.