
Numerical calculations, simulations
Computational fluid dynamics

CFD is a numerical method to calculate flows in systems of arbitrary geometry (Computational Fluid Dynamics). The entire flow field is divided into small elements. The velocities and scalar quantities such as temperature or smoke concentration are calculated in each element.
Selected animations
- 3D-smoke propagation near a train, HSL (NL)
- 3D-temperature evolution downstream of a fire, HSL (NL)
- 3D-temperature evolution upstream of a fire, HSL (NL)
- 1D-annual humidity evolution of the Gotthard base tunnel (CH)
- 1D-annual temperature evolution of the Gotthard base tunnel (CH)
- 1D-pressure variation of the le Perthus tunnel (FR/ES)
- 3D-visibility evolution downstream of a fire, HSL (NL)
- 3D-visibility evolution upstream of a fire, HSL (NL)
- 1D-pressure evolution during 2 train journeys in the Guadarrama tunnel (ES)
- 3D-visibility evolution upstream of a fire, HSL (NL)
- 1D-comparaison de l'évolution de pression entre 1 et 2 voies
- 1D-évolution de pression selon un passage d'un train, galerie Emmequerung (CH)
Reference projects – Computational fluid dynamics


Lötschberg base tunnel

Gotthard base tunnel

Lötschberg base tunnel

Tunnel Stuttgart 21

Stuttgart 21, Filder station

Young Dong railway tunnel

Young Dong railway tunnel

Gotthard base tunnel

Gotthard base tunnel

Tunnel Groene Hart, Dordtsche Kil and Rotterdam Noordrand

Bonn city railway

Metro station Marienplatz, Munich

Tabriz underground tunnel

Stuttgart city railway: U12 Hallschlag-Münster

Augsburg mobility hub

New Rail Link Mattstetten-Rothrist

Transrapid Munich

U55 Brandenburger Tor - Lehrter station, Berlin

Guadarrama tunnel, high-speed railway

Gotthard base tunnel

Tunnel Rotterdam Noordrand

Rail link Geneva – Annemasse

Brenner base tunnel

Brenner base tunnel

Metro Athens - extension of Line 2 and 3

Brenner base tunnel

Lötschberg base tunnel

Ceneri base tunnel

Brussels Airport - Diabolo Project

Metro Barcelona – section 1 of line 9

High-speed train TGV-Duplex

Metro Panama Line 1

Hauenstein base tunnel

Melbourne Metro Rail Project

High-speed rail tunnels in Sweden

California High Speed Rail – Palmdale to Burbank

Västlänken rail project in Göteborg

Lusail Light Rail Transit

Tunnel Böhämmer

Dublin Port Tunnel

Oberkirch-Lautenbach noise protection gallery

M5East Tunnel Sydney

Wesertunnel

Bypass Meran

Tunnel Bärenburg

Ovit Tunnel

Gallery of Dormagen-Horrem

Dreirosenbrücke

UPlaNS Colombier – Cornaux

Zurich Tonhalle

Oberkirch-Lautenbach noise protection gallery

Research project REHSTRAIN

M4 East, WestConnex Stage 1, Sydney
