Overview

Detailed flow measurements were taken inside an isolated axial compressor rotor operating subsonically near peak efficiency. These Laser Anemometer measurements were made with two inlet velocity profiles. One profile consisted of an unmodified baseline flow, and the second profile was distorted by placing axisymmetric screens on the hub and shroud well upstream of the rotor. A detailed comparison in the rotor relative reference frame between a Navier-Stokes solver and the measured experimental results showed good agreement between the predicted and measured flows. A primary flow is defined in the rotor and deviations and the computed predictions is made to assess the development of a passage vortex due to the distortion of the inlet flow. Computer predictions indicate that a distorted inlet profile has a minimal effect on the development of the flow in the rotor passage and the resulting passage vortex. Owen, Albert K. Glenn Research Center AXIAL FLOW; FLOW DISTRIBUTION; FLOW VELOCITY; INLET FLOW; SUBSONIC FLOW; TURBOCOMPRESSORS; VELOCITY DISTRIBUTION; COMPRESSOR ROTORS; COMPUTATIONAL FLUID DYNAMICS; FLOW DISTORTION; LASER ANEMOMETERS; NAVIER-STOKES EQUATION; SHROUDS; VORTICES...

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9781790377749

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