A multi-stage axial flow compressor mathematical modeling technique with application to two current turbofan compression systems

Chamblee, C E; Davis, Milt; Kimzey, William F.

doi:10.2514/6.1980-54

Cited by 4 publications

(2 citation statements)

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“…The present characteristics h a s been constructed on the few data given in several literature, for example, Chamblebee, Davies, Jr., and Kimzey [11], Davies, Jr. and O'Brien [12], Gamache and Greitzer [13], Greitzer [3], etc. in addition to the existing data.…”

Section: Compressors For the Analysesmentioning

confidence: 99%

Analytical Study on Stall Stagnation Boundaries in Axial-Flow Compressor and Duct Systems

Yamaguchi¹

2013

International Journal of Fluid Machinery and Systems

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Stall stagnations in the system of axial-flow compressors and ducts occur in transition from deep surge conditions to decayed or converged stall conditions. The present study is concerned with the boundaries between the deep surges and the stagnation stalls on the basis of analytical results by a code on surge transients analysis and simulation. The fundamental acoustical-geometrical stagnation boundaries were made clear from examinations of the results on a variety of duct configurations coupled with a nine-stage compressor and a single stage fan. The boundary was found to be formed by three parts, i.e., B-and A-boundaries, and an intermediate zone. The B-boundary occurs for the suction-duct having a length of about a quarter of the wave-length of the first resonance in the case of very short and fat plenum-type delivery duct. On the other hand, the A-boundary occurs for the long and narrow duct-type delivery flow-path having a length about a fifth of the wavelength and relatively small sectional area in the case of short and narrow suction ducts. In addition to this, the reduced surge-cycle frequencies with respect to the duct lengths are observed to have respective limiting values at the stagnation boundaries. The reduced frequency for the B-boundary is related with a limiting value of the Greitzer's B parameter. The tendency and the characteristic features of the related flow behaviors in the neighborhood of the boundaries were also made clearer.

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Section: Compressors For the Analysesmentioning

confidence: 99%

Analytical Study on Stall Stagnation Boundaries in Axial-Flow Compressor and Duct Systems

Yamaguchi¹

2013

International Journal of Fluid Machinery and Systems

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show abstract

“…These models have been applied to a variety of compression systems by Kimzey(l) and Chamblee, Davis and Kimzey (2). They are used to analyze and extrapolate the experimental data and to study the effects of unsteady disturbances on the aerodynamic stability of the compression system.…”

Section: Aedc-tr-82-16mentioning

confidence: 99%