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Electronics and FluidicsFluid Mechanics

Subsonic Cascade Wind Tunnel Tests Using a Compressor Configuration of DCA Blades

Authors: Frank S. Cina; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
Abstract:
Tests are reported in which air incidence angle was varied to a cascade of 20 blades, 5 inches in chord with aspect ratio of 2.0 and solidity of 1.67. Preliminary blade element performance data were obtained using pneumatic probe surveys and surface pressures were also measured. Results of preparatory tests of a similar cascade of 15 C-series blades at a solidity of 1.28 are also included. Whereas the flow in the C-series blading cascade was always acceptable, the flow in the DCA blading cascade was not acceptable at negative incidence angles. A modification of the cascade inlet guide vanes is recommended which will guarantee periodic conditions and serve to generate more nearly uniform inlet flow at all test conditions. (Author)

Description: Master's thesis
Pages: 210
Report Date: JUN 1981
Report Number: A795401

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Keywords relating to this report:
*CASCADES(FLUID DYNAMICS)
*Cascades_Fluid Dynamics_
*Compressor blades
*TURBINE BLADES
ASPECT RATIO
INLET GUIDE VANES
SUBSONIC WIND TUNNELS
THESES
TWO DIMENSIONAL FLOW
WIND TUNNEL TESTS
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