Selected projects

Ventilation and cooling of tunnel systems and underground sites

Ventilation of road tunnels

Installation of a jet fan in the Cross City Tunnel
Installation of a jet fan in the Cross City Tunnel

Cross City Tunnel Sydney

Leitet Herunterladen der Datei ein Tunnel ventilation

Jet fans at the south portal of the Giswil tunnel
Jet fans at the south portal of the Giswil tunnel
Glass enclosure at the east portal of the Petuel tunnel
Glass enclosure at the east portal of the Petuel tunnel
Assembly inspection of an axial fan in the M5East tunnel
Assembly inspection of an axial fan in the M5East tunnel

M5East Tunnel Sydney

Leitet Herunterladen der Datei ein Exhaust air filter

Aerial image of Glarus
Aerial image of Glarus

Preliminary design study of bypass Glarus

Leitet Herunterladen der Datei ein Tunnel ventilation

New jet fans in tunnel Piumogna
New jet fans in tunnel Piumogna
Ventilation channel with direction change
Ventilation channel with direction change
Portal of tunnel Leissigen
Portal of tunnel Leissigen
Jet fans with tilted silencers
Jet fans with tilted silencers
Exhaust damper in the crossway between the tubes of the Kirchwaldtunnel
Exhaust damper in the crossway between the tubes of the Kirchwaldtunnel
Western tube of the Richard-Strauss-Tunnel with maximum lighting
Western tube of the Richard-Strauss-Tunnel with maximum lighting

Tunnel Richard-Strauss Munich

Leitet Herunterladen der Datei ein Tunnel ventilation

New axial fans for smoke extraction in the Rheinufertunnel
New axial fans for smoke extraction in the Rheinufertunnel

Tunnel Rheinufer Düsseldorf

Leitet Herunterladen der Datei ein Smoke extraction and keeping smoke-free

Tunnel Gotschna interior with jet fan
Tunnel Gotschna interior with jet fan

Gotschnatunnel, bypass Klosters

Leitet Herunterladen der Datei ein Tunnel ventilation

Vent stack during smoke test in the tunnel Branisko
Vent stack during smoke test in the tunnel Branisko

Tunnel Branisko

Leitet Herunterladen der Datei ein Tunnel ventilation

Model of the lamella roof in Oberkirch-Lautenbach for CFD-simulation
Model of the lamella roof in Oberkirch-Lautenbach for CFD-simulation

Oberkirch-Lautenbach noise protection gallery

Leitet Herunterladen der Datei ein Expert opinion on open ceiling ventilation

Sörenberg tunnel during construction
Sörenberg tunnel during construction

Transit gas tunnel Sörenberg

Leitet Herunterladen der Datei ein Dimensioning of ventilation system


Ventilation of railway tunnels

Eastern tube of Lötschberg-Base tunnel
Eastern tube of Lötschberg-Base tunnel

Lötschberg base tunnel

Leitet Herunterladen der Datei ein Ventilation and safety concept

Site ventilation through airducts in the Lötschberg-Base tunnel
Site ventilation through airducts in the Lötschberg-Base tunnel
View through main train station Stuttgart 21
View through main train station Stuttgart 21
View through main train station Stuttgart 21
View through main train station Stuttgart 21

Stuttgart 21, Filder station

Leitet Herunterladen der Datei ein Ventilation and escape route concepts

Overview of the Young Dong train tunnel project
Overview of the Young Dong train tunnel project

Young Dong railway tunnel

Leitet Herunterladen der Datei ein Ventilation and risk control

Maintenance at the portal of the Gotthard-Base tunnel
Maintenance at the portal of the Gotthard-Base tunnel

Gotthard base tunnel

Leitet Herunterladen der Datei ein Climate during maintenance

Visualisation of smoke and heat distribution at the front of a train (CFD-simulation)
Visualisation of smoke and heat distribution at the front of a train (CFD-simulation)

Tunnel Groene Hart, Dordtsche Kil and Rotterdam Noordrand

Leitet Herunterladen der Datei ein Efficiency of the emergency ventilation

Tunnel Guadarrama: two single track tubes with crossways and two emergency stops
Tunnel Guadarrama: two single track tubes with crossways and two emergency stops
Overview of the light-rail system of the city railway in Bonn
Overview of the light-rail system of the city railway in Bonn
Underground railway station Marienplatz: fire simulation with CFD to determine the visibility
Underground railway station Marienplatz: fire simulation with CFD to determine the visibility

Metro station Marienplatz, Munich

Leitet Herunterladen der Datei ein Safety and ventilation concept

Overview of the light-rail system of the city railway Stuttgart: U12 Hallschlag-Münster
Overview of the light-rail system of the city railway Stuttgart: U12 Hallschlag-Münster

Stuttgart city railway: U12 Hallschlag-Münster

Leitet Herunterladen der Datei ein Safety and ventilation concept

Cross section of the station Mobilitätsdrehscheibe Augsburg
Cross section of the station Mobilitätsdrehscheibe Augsburg

Augsburg mobility hub

Leitet Herunterladen der Datei ein Safety and ventilation concept

TRANSRAPID hover train at the airport Munich
TRANSRAPID hover train at the airport Munich
Air ducts beside trains during works in light-rail system Berlin
Air ducts beside trains during works in light-rail system Berlin

U55 Brandenburger Tor - Lehrter station, Berlin

Leitet Herunterladen der Datei ein Ventilation during installation works

Concrete pouring on the tunnel floor with site ventilation in the Gotthard-Base tunnel
Concrete pouring on the tunnel floor with site ventilation in the Gotthard-Base tunnel
Skymetro at the station
Skymetro at the station
CFD-study on natural smoke extraction in the HSL-Zuid tunnel
CFD-study on natural smoke extraction in the HSL-Zuid tunnel


Refurbishment of ventilation systems

Construction of the niches for jet fans in the tunnel de la Vue-des-Alpes
Construction of the niches for jet fans in the tunnel de la Vue-des-Alpes
Tunnel Amberg interior after maintenance
Tunnel Amberg interior after maintenance
Fans in the extraction center of tunnel Heslach
Fans in the extraction center of tunnel Heslach
Installation of the axial fans in tunnel Isla Bella in 1980
Installation of the axial fans in tunnel Isla Bella in 1980
Factory acceptance test of a jet fan
Factory acceptance test of a jet fan
Northern portal of the Elbtunnel with four tubes
Northern portal of the Elbtunnel with four tubes


Aero-, thermodynamics and fluid dynamics

Computation of the temperature gradient for the Gotthard-Basistunnel
Computation of the temperature gradient for the Gotthard-Basistunnel
3D view of the station in Bijlmer
3D view of the station in Bijlmer

Bijlmer Station, Amsterdam

Leitet Herunterladen der Datei ein Aerodynamic loads

Model of the Gotthard-Basistunnel for wind tunnel tests
Model of the Gotthard-Basistunnel for wind tunnel tests
Graph from the results of a climate simulation
Graph from the results of a climate simulation

Gotthard and Lötschberg base tunnel

Leitet Herunterladen der Datei ein Climate simulations

Maintenance at the portal of the Gotthard-Base tunnel
Maintenance at the portal of the Gotthard-Base tunnel

Gotthard base tunnel

Leitet Herunterladen der Datei ein Climate during maintenance


Risk and safety

Risk analysis

Overview of the tunnel Frankenschnellweg with access and exits
Overview of the tunnel Frankenschnellweg with access and exits
Position of the Katzenbergtunnel near Würzburg
Position of the Katzenbergtunnel near Würzburg
Overview of the tubes in tunnel Kö-Bogen
Overview of the tubes in tunnel Kö-Bogen
Western portal of the Wesertunnel
Western portal of the Wesertunnel
Fire simulation in the gallery Dormagen-Horrem with Fire Dynamics Simulator
Fire simulation in the gallery Dormagen-Horrem with Fire Dynamics Simulator

Gallery of Dormagen-Horrem

Leitet Herunterladen der Datei ein Risk-based safety evaluation


Escape route planning and rescue concepts

Simulation of smoke propagation in the Gotthard-Basistunnel
Simulation of smoke propagation in the Gotthard-Basistunnel
Visualisation of smoke and heat distribution at the front of a train (CFD-simulation)
Visualisation of smoke and heat distribution at the front of a train (CFD-simulation)

Tunnel Groene Hart, Dordtsche Kil and Rotterdam Noordrand

Leitet Herunterladen der Datei ein Efficiency of the emergency ventilation

Temporal progress of the smoke propagation after a burning van in the Böhämmertunnel
Temporal progress of the smoke propagation after a burning van in the Böhämmertunnel

Tunnel Böhämmer

Leitet Herunterladen der Datei ein Safety analysis


Electro-mechanical equipment

Two-part moving gate in the train tunnel Lötschberg-Basislinie
Two-part moving gate in the train tunnel Lötschberg-Basislinie


Measurements, tests, commissioning and acceptance

Train in train tunnel Engelberg
Train in train tunnel Engelberg

Engelberg railway tunnel

Leitet Herunterladen der Datei ein Smoke extraction and smoke control

Northern portal of tunnel Simplon
Northern portal of tunnel Simplon
Underground railway station Marienplatz: fire simulation with CFD to determine the visibility
Underground railway station Marienplatz: fire simulation with CFD to determine the visibility

Metro station Marienplatz, Munich

Leitet Herunterladen der Datei ein Safety and ventilation concept

Jet fans with tilted silencers
Jet fans with tilted silencers
Installation of the axial fans in tunnel Isla Bella in 1980
Installation of the axial fans in tunnel Isla Bella in 1980
Factory acceptance test of a jet fan
Factory acceptance test of a jet fan


Numerical calculations and simulations

Temperature gradient in the tunnel when a train is burning
Temperature gradient in the tunnel when a train is burning

Young Dong railway tunnel

Leitet Herunterladen der Datei ein Verification of smoke control

Visualisation of smoke and heat distribution at the front of a train (CFD-simulation)
Visualisation of smoke and heat distribution at the front of a train (CFD-simulation)

Tunnel Groene Hart, Dordtsche Kil and Rotterdam Noordrand

Leitet Herunterladen der Datei ein Efficiency of the emergency ventilation

CFD-study on natural smoke extraction in the HSL-Zuid tunnel
CFD-study on natural smoke extraction in the HSL-Zuid tunnel
Novel large gates for train tunnels
Novel large gates for train tunnels
Results of the CO concentration during a fire via CFD
Results of the CO concentration during a fire via CFD
Model of the lamella roof in Oberkirch-Lautenbach for CFD-simulation
Model of the lamella roof in Oberkirch-Lautenbach for CFD-simulation

Oberkirch-Lautenbach noise protection gallery

Leitet Herunterladen der Datei ein Expert opinion on open ceiling ventilation


Consulting, project management and expert opinion