| Category | Description |
|---|---|
| Responsible | Dr.-Ing. Peter Scholz |
| Type | Göttingen Type |
| Test Section | 1.3 m x 1.3m x 5.0 m |
| Max. Velocity | 60 m/s |
| Turbulence Level | Less than 0.16%, 5 Hz to 10 kHz |
| Flow Uniformity | Better than 0.5% (Outside wall BLs) |
The MUB is a multi-purpose Göttingen-type wind tunnel with a closed test section for testing airfoils, aircraft components and ground vehicles.
The settling chamber is equipped with a straightener and three screens to optimize flow quality. The nozzle contour is also optimized for minimum turbulence and maximum uniformity. As a result, the wind tunnel also allows representative studies of the laminar-turbulent transition, for example. A heat exchanger in the settling chamber stabilizes the flow temperature.
The wind tunnel is driven by a speed controlled DC motor. A central data acquisition system allows the control of the wind tunnel from the control room and the recording of all relevant flow boundary conditions.
The test section is largely modular in design in order to realize a wide variety of experiments. It allows various options for model mounting, optical access and diverse integrations. All side, top and bottom panels are interchangeable and can be adapted to the specific measurement task.
The necessary components are available for many standard setups: Two-dimensional models can be mounted between turntables. Models of finite wings (wing stubs, winglets, half models) can be installed on a rotating floor balance. For automotive studies, a splitter plane is used to reduce the thickness of the floor boundary layer. Various large flat plates are also available to generate laminar and turbulent boundary layers.
The tunnel is generally used as part of the institute's research projects, but is also available to external customers on request. Our entire range of measurement methods is routinely used, including Particle Image Velocimetry (PIV), force balances, pressure taps etc. Typically, investigations are carried out on flat plates, profiles or 1:4 scaled models of road-vehicles. However, numerous other setups are possible in principle, such as MAVs or full models on a sting support, half models on a box balance, as well as other forms of generic flow cases, e.g. backward facing steps, wakes and so on. A gust generator and various secondary technology (suction systems, compressed air supply) are available for the tunnel.