OPEN WIND TUNNEL APPARATUS

Technical Description A wind tunnel is the classic experiment system for aerodynamic flow experiments.The model being studied remains at rest while the flow medium is set in motion and thus, the desired flow around the model is generated. Open wind tunnel is used to demonstrate and measure the aerodynamic properties of various models. For this purpose, air is drawn in from the environment and accelerated.The air flows around a model, such as an aerofoil, in a measuring section.The air is then decelerated in a diffuser and pumped back into the open by a fan. The carefully designed nozzle contour and a flow straightener ensure a uniform velocity distribution with little turbulence in the closed measuring section. The flow cross section of the measuring section is square. The built-in axial fan with guide vane and a variable-speed drive is characterized by an energy-efficient operation at high efficiency.Air velocities of up to 28m/s can be reached in this open wind tunnel.The trainer is equipped with an electronic two – component force sensor. Lift and drag are detected and displayed digitally. The air velocity in the measuring section is displayed on the inclined tube manometer. The tube manometers is recommended for measuring the pressure curves in drag bodies. Extensive accessories allow a variety of experiments. for example lift measurements, pressure distributions, boundary layer analysis or visualization of streamlines.The well-structured instructional material sets out the fundamentals and provides a step-by-step guide through the experiments. Learning Objectives & Experiments
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 a variety of aerodynamic
experiments
Homogeneous flow through the flow straightener
and special nozzle contour
Transparent measuring section