Three-dimensional through-flow modelling of axial flow compressor rotating stall and surge

This paper describes the results on an experimental investigation of rotating stall flow inside a single-stage axial flow compressor. Tests were carried out in two steps. First, measurements were taken to investigate the transition process into rotating stall. The compressor starts into rotating stall via the “modal route” with a single rotating stall cell. Further throttling yields to a two-cell shape followed by a significant outlet pressure drop. Both transition processes are discussed in detail. Results from the Moore–Greitzer theory are compared with measured data. In a second step, measurements were taken to determine the three-dimensional unsteady structure of a fully developed rotating-stall cell. Based on unsteady total pressure and three-dimensional hot-wire data, the structure of a rotating stall cell could be resolved in detail upstream and downstream of the rotor. A typical part-span stall was found. By inserting the measured data into the Euler equations, convective and unsteady effects on the pressure fluctuations can be isolated. A dependence between the radial flow inside the stall cell and the unsteady flow accelerations was found.

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Axial Flow Compressor Design Optimization: Part II — Through-Flow Analysis

Volume 1: Turbomachinery ◽

10.1115/89-gt-202 ◽

1989 ◽

Cited By ~ 1

Author(s):

Aristide Massardo ◽

Antonio Satta ◽

Martino Marini

Keyword(s):

Design Optimization ◽

Flow Analysis ◽

Three Dimensional ◽

Axial Flow ◽

Axial Flow Compressor ◽

Through Flow ◽

Compressor Design ◽

Type Calculation ◽

A New Technique ◽

Flow Compressor

A new technique is presented for the design optimization of an axial-flow compressor stage. The procedure allows for optimization of the complete radial distribution of the geometry since the variables, chosen to represent the three dimensional geometry of the stage, are coefficients of suitable polynomials. Evaluation of the objective function is obtained with a through-flow type calculation, which has acceptable speed and stability qualities. Some examples are given of the possibility to use the procedure both for redesign and, together with what was presented in Part I, for the complete design of axial-flow compressor stages.

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Rotating Stall in a Single Stage Axial Flow Compressor

Volume 1: Turbomachinery ◽

10.1115/94-gt-210 ◽

1994 ◽

Cited By ~ 1

Author(s):

C. A. Poensgen ◽

H. E. Gallus

Keyword(s):

Pressure Fluctuations ◽

Three Dimensional ◽

Axial Flow ◽

Transition Process ◽

Measured Data ◽

Rotating Stall ◽

Single Stage ◽

Axial Flow Compressor ◽

Flow Compressor ◽

Modal Route

This paper describes the results on an experimental investigation of rotating stall flow inside a single stage axial flow compressor. Tests were carried out in two steps. First, measurements were taken to investigate the transition process into rotating stall. The compressor starts into rotating stall via the “modal route” with a single rotating stall cell. Further throttling yields to a two-cell shape followed by a significant outlet pressure drop. Both transition processes are discussed in detail. Results from the Moore-Greitzer theory are compared with measured data. In a second step measurements were taken to determine the three-dimensional unsteady structure of a full developed rotating-stall cell. Based on unsteady total pressure and threedimensional hot-wire data, the structure of a rotating stall cell could be resolved in detail upstream and downstream the rotor. A typical part-span stall was found. By inserting the measured data into the Euler-equations convective and unsteady effects on the pressure fluctuations can be isolated. A dependence between the radial flow inside the stall cell and the unsteady flow accelerations was found.

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G607 Unsteady Three Dimensional Flow Behavior of Separated Flow in an Axial Flow Compressor Rotor at Rotating Stall(2)

The Proceedings of the Fluids engineering conference ◽

10.1299/jsmefed.2006._g607-1_ ◽

2006 ◽

Vol 2006 (0) ◽

pp. _G607-1_-_G607-4_

Author(s):

Ken-ichiro IWAKIRI ◽

Ryusuke OHTAGURO ◽

Sho BONKOHARA ◽

Yasuhiro SHIBAMOTO ◽

Kazutoyo YAMADA ◽

...

Keyword(s):

Flow Behavior ◽

Three Dimensional ◽

Axial Flow ◽

Separated Flow ◽

Rotating Stall ◽

Three Dimensional Flow ◽

Axial Flow Compressor ◽

Dimensional Flow ◽

Compressor Rotor ◽

Flow Compressor

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

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2006.2.0_151 ◽

2006 ◽

Vol 2006.2 (0) ◽

pp. 151-152

Author(s):

Ken-ichiro IWAKIRI ◽

Ryusuke OHTAGURO ◽

Sho BONKOHARA ◽

Yasuhiro SHIBAMOTO ◽

Masato FURUKAWA

Keyword(s):

Three Dimensional ◽

Axial Flow ◽

Rotating Stall ◽

Flow Mechanism ◽

Three Dimensional Flow ◽

Axial Flow Compressor ◽

Dimensional Flow ◽

Flow Compressor

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Distributed Control of Rotating Stall in an Axial Flow Compressor With Actuator Constraints

10.1115/imece2000-2379 ◽

2000 ◽

Author(s):

Craig A. Buhr ◽

Matthew A. Franchek ◽

Sanford Fleeter

Keyword(s):

Absolute Stability ◽

Closed Loop ◽

Axial Flow ◽

Gain Control ◽

Rotating Stall ◽

Control Law ◽

Circle Criterion ◽

Axial Flow Compressor ◽

Flow Compressor ◽

Stall Control

Abstract Presented in this paper is an analytical study evaluating the closed loop stability of rotating stall control in an axial flow compressor subject to a nonlinear spatial actuation constraint that limits the amplitude of a spatial mode input. Absolute stability of the rotating stall control system is investigated by applying the circle criterion to a linearized model of an axial compressor in series with the saturation element. This stability analysis is then used to design the gain and phase of the ‘classical’ complex gain feedback control law. Resulting is a systematic method for designing the parameters of the complex gain control law which increases the region of absolute stability guaranteed by the circle criterion for the closed-loop system.

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

Journal of Turbomachinery ◽

10.1115/1.2929192 ◽

1992 ◽

Vol 114 (3) ◽

pp. 675-685 ◽

Cited By ~ 35

Author(s):

A. Goto

Keyword(s):

Velocity Fluctuation ◽

Three Dimensional ◽

Axial Flow ◽

Flow Fields ◽

Tip Clearance ◽

Small Scale ◽

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 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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