2416 Three Dimensional Flow Mechanism of Rotating Stall in an Axial Flow Compressor

The effect of difference in rotor tip clearance on the mean flow fields and unsteadiness and mixing across a stator blade row were investigated using hot-wire anemometry, pressure probes, flow visualization, and the ethylene tracer-gas technique on a single-stage axial flow compressor. The structure of the three-dimensional flow fields was discussed based on results of experiments using the 12-orientation single slanted hotwire technique and spectrum analysis of velocity fluctuation. High-pass filtered measurements of turbulence were also carried out in order to confirm small-scale velocity fluctuation, which is more realistically referred to as turbulence. The span-wise distribution of ethylene gas spreading, estimated by the measured small-scale velocity fluctuation at the rotor exit, agreed quite well with that which was experimentally measured. This fact suggests the significant role of turbulence, generated within the rotor, in the mixing process across the downstream stator. The value of the maximum mixing coefficient in the tip region was found to increase linearly as the tip clearance became enlarged, starting from the value at midspan.

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Numerical Simulation Method for Three-Dimensional Flow Field of Multistage Axial Flow Compressor

2017 Second International Conference on Mechanical, Control and Computer Engineering (ICMCCE) ◽

10.1109/icmcce.2017.24 ◽

2017 ◽

Author(s):

Yu Wang ◽

Junyi Wen ◽

Yixiang Liu ◽

Xinbo Zhang

Keyword(s):

Numerical Simulation ◽

Flow Field ◽

Three Dimensional ◽

Axial Flow ◽

Simulation Method ◽

Three Dimensional Flow ◽

Axial Flow Compressor ◽

Dimensional Flow ◽

Numerical Simulation Method ◽

Flow Compressor

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Closure to “Discussion of ‘Three-Dimensional Flow Phenomena in a Transonic, High-Throughflow, Axial-Flow Compressor Stage’” (1993, ASME J. Turbomach., 115, p. 248)

Journal of Turbomachinery ◽

10.1115/1.2929230 ◽

1993 ◽

Vol 115 (2) ◽

pp. 248-248

Author(s):

W. W. Copenhaver ◽

C. Hah ◽

S. L. Puterbaugh

Keyword(s):

Three Dimensional ◽

Axial Flow ◽

Compressor Stage ◽

Three Dimensional Flow ◽

Axial Flow Compressor ◽

Dimensional Flow ◽

Flow Phenomena ◽

Flow Compressor

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An Experimental Investigation on the Mechanism of Stall Margin Improvement of Casing Treatment

Volume 1: Aircraft Engine; Turbomachinery ◽

10.1115/85-igt-102 ◽

1985 ◽

Author(s):

Zhuang Ping ◽

Lu Ya-Jun ◽

Li Bao-Ju ◽

Feng Yu-Chen

Keyword(s):

Good Reason ◽

Three Dimensional ◽

Axial Flow ◽

Rotating Stall ◽

Flow Mechanism ◽

Three Dimensional Flow ◽

Stall Margin ◽

Casing Treatment ◽

Stall Margin Improvement ◽

Flow Compressor

A single-rotor axial flow compressor and a two-dimensional cascade have been tested with and without casing treatment. A three-dimensional flow mechanism of the onset of rotating stall is suggested. It gives good reason to explain the mechanism of stall-margin improvement of casing treatment.

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Three-Dimensional Flow and Mixing in an Axial Flow Compressor With Different Rotor Tip Clearances

Volume 1: Turbomachinery ◽

10.1115/91-gt-089 ◽

1991 ◽

Cited By ~ 6

Author(s):

Akira Goto

Keyword(s):

Velocity Fluctuation ◽

Three Dimensional ◽

Axial Flow ◽

Tip Clearance ◽

Small Scale ◽

Hot Wire ◽

Three Dimensional Flow ◽

Axial Flow Compressor ◽

Dimensional Flow ◽

Flow Compressor

The effect of difference in rotor tip clearance on the mean flow fields and unsteadiness and mixing across a stator blade row were investigated using hot-wire anemometry, pressure probes, flow visualization and the ethylene tracer-gas technique on a single stage axial flow compressor. The structure of the three-dimensional flow fields was discussed based on results of experiments using the 12-orientation single slanted hot-wire technique and spectrum analysis of velocity fluctuation. High-pass filtered measurements of turbulence were also carried out in order to confirm small-scale velocity fluctuation which is more realistically referred to as turbulence. The spanwise distribution of ethylene gas spreading, estimated by the measured small-scale velocity fluctuation at the rotor exit, agreed quite well with that which was experimentally measured. This fact suggests the significant role of turbulence, generated within the rotor, in the mixing process across the downstream stator. The value of the maximum mixing coefficient in the tip region was found to increase linearly as the tip clearance became enlarged, starting from the value at midspan.

Download Full-text