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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.15 No.2
- 발행연도
- 2022.6
- 수록면
- 137 - 157 (21page)
- DOI
- 10.5293/IJFMS.2022.15.2.137
이용수
초록· 키워드
오류제보하기
Compressor deep surges are observed to be of either near-resonant type or convective type. The differences of the behaviors and the boundaries between both types were tried to make clear in the situations of a single-stage axial compressor on the basis of numerical-experimental results by use of a surge simulation code. In the near-resonant surges, the surge frequencies relative to the resonance frequency range roughly from 0.9 to 1.1, close to the resonance condition. The surges tend to degenerate just above or in the resonance range. The convective type is said to perform actions of emptying and filling the flow in the delivery plenum, showing lower relative surge frequencies less than 0.9. The study for the criteria governing the boundary between both surge types has suggested an axial motion parameter as the candidate. The convective surges are observed to occur above the boundary value of the axial motion parameter. In the environment, the fluctuation amplitudes tend to be larger than those in the near-resonant surges. The situations force the compressor to work over a wider range from the turbine-action zone to the deeply-reverse flow zone along the stage characteristic. The flow reversals thus reinforced will enhance the so-called emptying and filling actions in the convective surges.
목차
Abstract
1. Introduction
2. Outline of the Procedure of the Study
3. Macroscopic Surge Parameters
4. Framework Maps of Surge Frequency Parameters
5. Boundary between the Near-Resonant Surges and the Convective Ones
6. Differences of Behaviors between Near-resonant Surges and Convective Ones
7. Summary and Considerations
8. Conclusion
References
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