Title :
Influence of wind tunnel circuit installations on test section flow quality
Author_Institution :
DLR Braunschweig, West Germany
Abstract :
Investigations in the low-speed wind tunnel of the DLR at Braunschweig have shown that fairly strong flow disturbances which are produced by installations in the tunnel circuit upstream of the settling chamber do not penetrate into the test section, whereas thin soldered seams in the settling chamber screens cause a deficit in total pressure and an increase in turbulence in the test section flow. The effect is strongest for seams in the last screen and decreases for seams in screens which are installed upstream of the last one. The disturbances are amplified if seams are located one behind the other
Keywords :
flow instability; flow measurement; wind tunnels; circuit upstream; flow disturbances; flow measurement; flow quality; instability; settling chamber; thin soldered seams; turbulence; wind tunnel circuit installations; Blades; Circuit testing; Fluctuations; Fluid flow measurement; Mechanical variables measurement; Pressure measurement; Yarn;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1989. ICIASF '89 Record., International Congress on
Conference_Location :
Gottingen
DOI :
10.1109/ICIASF.1989.77695
