ABSTRACT
The new 13.62 metres wide boundary-layer wind tunnel at the Danish Maritime Institute has been purpose-built for aeroelastic tests with a complete model of the long suspension bridge which is part of the fixed link across the Great Belt. The tunnel has a working section of L × B × H = 15.5 × 13.62 × 1.70 metres and a maximum wind speed of 7.26 m/s corresponding to a full-scale wind speed of 103 m/s or 200 knots at a scale ratio of 1:200 using Froude scaling. The lowest directly controllable speed is 0.44 m/s. The paper describes the new tunnel and presents results of measurements of the flow quality achieved. The extreme width of the new tunnel may be utilized not only for bridge tests, but also for wind environmental studies in relation to landscapes, urban development, pollution dispersion, etc.
