A wind tunnel serves as a standard experimental platform for studying aerodynamic flow. In this setup, the model remains stationary while the flow medium is set in motion, creating the necessary flow around it. In an exposed wind tunnel, the aerodynamic properties of different models are displayed and measured. Air is drawn from the atmosphere and accelerated, circulating around a model, such as an airfoil, in the measurement section. The air slows down in a diffuser before being pumped back into the open by a fan. The carefully designed nozzle contour and flow straightener ensure uniform velocity distribution with minimal turbulence in the closed measuring area. The measurement section has a square cross section and features an integrated axial fan with a guiding vane, a variable-speed drive, and energy efficient operation at high efficiency. The open wind tunnel can reach air speeds up to 28 m/s. The trainer is equipped with an electrical two component force sensor, which visually and graphically represents lift and drag. Air velocity in the measurement region is shown using an inclined tube manometer, while tube manometers indicate pressure curves in drag bodies. A range of accessories allows for various studies, including lift measurement, boundary layer analysis, pressure distribution measurement, and streamline visualization. Detailed course materials offer an overview of the principles and provide a step by step guide for the experiments.

Experimental Objective 

Determine drag and lift coefficients for different models.

Pressure distribution when flowing around drag bodies.

Boundary layer analysis.

Investigation of flutter.

Wake measurement.

 Features

Open wind tunnel for conducting various aerodynamic experiments.

Uniform flow achieved through the flow straightener and specially designed nozzle contour.

Transparent measurement section for easy observation.