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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.11 No.4
- 발행연도
- 2018.12
- 수록면
- 357 - 373 (17page)
- DOI
- 10.5293/IJFMS.2018.11.4.357
이용수
초록· 키워드
오류제보하기
Effects of compressor pressure ratios and flowpath geometries on the frequencies of deep-surges in multi-stage axial flow compressors are studied on the basis of numerical experiments. The frequencies tend generally to lower in a complicated manner toward higher rpms and higher pressure ratios of the compressors. The general behaviors of the frequencies are found to be described in large in terms of an effective reduced surge frequency numerical-experimentally searched for. The parameter tends to keep a nearly constant level of values for a wide range of stalling pressure ratios, rpms, and number of stages of compressors. For multi-stage compressors, however, at slightly below the design speed, the parameter values tend to drop rather steeply, and above the speed, they tend to keep again a new constant level of values at the lowered level. The transition of the behavior is more significant for the conditions of compressors designed for higher pressure ratios and in shorter delivery flow-paths. It could be attributed to the effect of a relocation of surge-triggering stages in the local zone of the surge flow mode with the amplitude varying much in the axial direction. The detailed phenomena involved in the behaviors will be clarified in Part 2.
목차
Abstract
1. Introduction
2. Outline of the Analyses
3. Parameters of Importance
4. Surge Frequency Behaviors for Changes in the Compressor rpms
5. Correlation of Surge Frequency Parameters, fRPVVsm vs. APR*
6. Effective Reduced Surge Frequency
7. Summary and Considerations
8. Conclusions
References
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UCI(KEPA) : I410-ECN-0101-2019-554-000447845