Description
Compact wind tunnel, open circuit downstream fan. Designed for the study of subsonic aerodynamics.
Air enters the tunnel via an entrance flare, a flow straightener, wire mesh screens, and a high contraction ratio section to ensure uniform velocity across the transparent test section. Downstream of the working section is a low angle diffuser which terminates at the tunnel fan. The diffuser and contraction sections have a high quality internal finish to minimize boundary layer effects. The fan impeller blades have aerofoil design cast aluminum to ensure maximum aerodynamic efficiency and minimum turbulence. Fan speed is adjustable by inverter.
Four equally spaced static pressure taps are connected to a manifold to minimize effects from a model. Air speed is indicated by an inclined manometer and a calibration graph. Models are mounted on two-component balance support with indicators for measuring drag and lift. The model holder can be rotated to allow quick changes on the angle of incidence. Angle is indicated on an angular scale.
Experimental Capabilities (with the appropriate accessories):
. Pressure and velocity measurement
. Estimation of drag coefficients of various bodies (sphere, hemisphere, disc, etc.)
. Estimation of drag and lift coefficients of an aerofoil
. Pressure distribution around an aerofoil or a cylinder
. Investigation of boundary layer at a flat plate by measuring total head distribution
. Stream lines visualization using a smoke generator
. Wake behind models
Many options and accessories are available.
