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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.14 No.1
- 발행연도
- 2021.3
- 수록면
- 62 - 79 (18page)
- DOI
- 10.5293/IJFMS.2021.14.1.062
이용수
초록· 키워드
오류제보하기
The fundamental behaviors of deep surge frequencies in axial-flow compressors have come to be described as a rather simple framework for low pressure-ratio compressors, in terms of two essential reduced frequencies concerning resonance frequencies and surge frequencies, on the basis of numerical-experimental results. For high-pressure-ratio multi-stage compressors, however, the frequency behaviors over a wide range of compressor speeds tend to give drastic deviations from the simple framework, including abrupt changes and apparent irregularities. The cause was investigated here by numerical simulations on a nine-stage axial flow compressor. Generally, deep surge frequencies of high-pressure ratio compressors tend to lower gradually, from low speeds toward higher ones. At somewhat below the design speed, the frequencies tend to decrease precipitously, settling to some very low levels of values. The discontinuous drops in the frequencies are shown to result from occurrences of short-term incomplete surge recoveries in the stalling phase of surge. The phenomenon tends to elongate the duration of the stalled phase and the whole surge duration, resulting in the lowered surge frequency. The phenomenon is caused by the flow reversal of high-temperature air in the stalling phase of surge and the re-suction of the hot air in the unstalling phase. The degree of the peak temperature and the intensity of the interferences between the hot-air re-suction phenomenon and the intrinsic surge appear to affect significantly the additional short-term premature stalling of the compressor. It could be strongly related with the high average temperature due to the hot air re-suction, and the duration time of the suction. The complicated behaviors thus become qualitatively explainable, though only by examinations on numerical-simulation results.
목차
Abstract
1. Introduction
2. Procedures of Analysis of Compressor Surges
3. Basic Parameters and Framework of Surge Frequencies
4. Behaviors of Surge Parameters in Multi-stage compressors
5. Details of the Frequency Drops around the Compressor Design-Speed
6. Reversed Hot Flows and Re-suctions in the Stalling and Unstalling Phases in Surge
7. Various Factors Affecting the Surge Frequencies in Multi-Stage Compressors
8. Summary
9. Conclusion
참고문헌 (15)
참고문헌 신청
Nobuyuki Yamaguchi / 2016 / Genesis of Researches on Surges in Pumping Systems in Japan / International Journal of Fluid Machinery and Systems 9(1):17~27
Greitzer, E.M / 1976 / Surge and Rotating Stall in Axial Flow Compressors, Part I: Theoretical Compression System Model, and Part II: Experimental Results and Comparison with Theory / ASME, Journal of Engineering for Power 98:190~217
Greitzer, E.M / 1980 / REVIEW-Axial Compressor Stall Phenomena / Journal of Fluids Engineering, Transaction of ASME 102:134~151
Greitzer, E.M / 1981 / The Stability of Pumping Systems - The 1980 Freeman Scholar Lecture / Journal of Fluids Engineering, Transaction of ASME 103:193~242
Cumpsty, N.A / 1989 / Stall and Surge”, The 9th Chapter in “Compressor aerodynamics / Longman Scientific & Technical, Longman UK Limited :359~409
Greitzer, E.M / 1976 / Surge and Rotating Stall in Axial Flow Compressors, Part I: Theoretical Compression System Model, and Part II: Experimental Results and Comparison with Theory / ASME, Journal of Engineering for Power 98:190~217
Greitzer, E.M / 1980 / REVIEW-Axial Compressor Stall Phenomena / Journal of Fluids Engineering, Transaction of ASME 102:134~151
Greitzer, E.M / 1981 / The Stability of Pumping Systems - The 1980 Freeman Scholar Lecture / Journal of Fluids Engineering, Transaction of ASME 103:193~242
Cumpsty, N.A / 1989 / Stall and Surge”, The 9th Chapter in “Compressor aerodynamics / Longman Scientific & Technical, Longman UK Limited :359~409
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