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논문 기본 정보

자료유형
학술대회자료
저자정보
Fanshi Kong (Andong National University) Vincent Lijo (Andong National University) Heuy Dong Kim (Andong National University) Yingzi Jin (Zhejiang Sci-Tech University)
저널정보
한국추진공학회 한국추진공학회 학술대회논문집 한국추진공학회 2011년도 제37회 추계학술대회 논문집, Nov
발행연도
2011.11
수록면
182 - 186 (5page)

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이 논문의 연구 히스토리 (10)

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Ejector-diffuser system has long been used in many diverse fields of engineering applications and it has advantages over other fluid machinery, because of no moving parts and structural simplicity. This system makes use of high-pressure primary stream to entrain the low-pressure secondary stream through pure shear actions between two streams. In general, the flow field in the ejector-diffuser system is highly complicated due to turbulent mixing, compressibility effects and sometimes flow unsteadiness. A fatal drawback of the ejector system is in its low efficiency. Many works have been done to improve the performance of the ejector system, but not yet satisfactory, compared with that of other fluid machinery. In the present study, a mixing guide vane was installed at the inlet of the secondary stream for the purpose of the performance improvement of the ejector system. A CFD method has been applied to simulate the supersonic flows inside the ejectordiffuser system. The present results obtained were validated with existing experimental data. The mixing guide vane effects are discussed in terms of the entrainment ratio, total pressure loss as well as pressure recovery.

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Abstract
1. INTRODUCTION
2. NUMERICAL SIMULATION
3. RESULTS AND DISCUSSION
4. CONCLUSIONS
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