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http://dx.doi.org/10.5139/JKSAS.2005.33.12.068

The effects of primary gas physical properties on the performance of annular injection type supersonic ejector  

Jin, Jung-Kun (한국과학기술원 항공우주공학과 대학원)
Kim, Se-Hoon (한국과학기술원 항공우주공학과 대학원)
Park, Geun-Hong (한국과학기술원 항공우주공학과 대학원)
Kwon, Se-Jin (한국과학기술원 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.33, no.12, 2005 , pp. 68-75 More about this Journal
Abstract
The effects of the physical properties of primary flow on the performance of a supersonic ejector were investigated. Axisymmetric annular injection type supersonic ejector was used for the study of the effects of molecular weight and the specific heat at constant pressure on the ejection performance. Test gases include; air, $CO_{2}$, Ar, $C_{3}H_{8}$, and $CCl_{2}F_{2}$ for different values of gas properties. As the molecular weight and CP of the primary gas increase, the secondary flow pressure increases at the same primary stagnation pressure and this behavior results from the combined effects of molar specific heat or specific heat ratio.
Keywords
Supersonic Ejector; Annular Injection Type; Ejector Performance;
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  • Reference
1 Kim, H.D., Lee, J.H., Woos, S. H. and Cho, B. G., 'Study of the Operation Characteristics of the Supersonic Steam Ejector System', J. KSPE, Vol. 5, No.3, 2001, pp. 33-44
2 DA-WEN SUN and Ian W.Eames, 'Recent Developments in the Design Theories and Applications of Ejectors - a review', J. the Institute of Energy, 68, 1995, pp. 33-40
3 최보규',이젝터 유동 특성에 관한 연구', 공학박사 학위논문, 부산대학교
4 Boreysho, A.S., Khailov, V.M., Malkov, V.M. and Savin, A V. 'Pressure Recovery Systems for High Power Gas Flow Chemical Lasers', 2002, 13th GCL-HPL
5 김세훈, 권세진, '화학레이저 구동용 이젝터 시스템 개발(I) - 화학레이저 구동용 초음속 이젝터 설계 변수 연구', 대한기계학회논문집 B 제 27권, 제 12호, 2003, pp. 1673-1680
6 김세훈, 진정근, 권세진, '화학레이저 구동용 이젝터 시스템 개발(II) - 이차목 형태의 환형 초음속 이젝터 최적 설계', 대한기계학회논문집 B 제 28권, 제 10호, 2004, pp. 1231-1237
7 K. Annamalai, K. Visvanathan, V. Sriramulu and K. A Bhaskaran, 'Evaluation of the performance of supersonic exhaust diffuser using scaled down models', Experiments Thermal and Fluid Science, 17, 1998, pp. 217-229   DOI   ScienceOn
8 Work, L. T. and Haedrich, V. W., H.T., 'Performance of Ejectors as a Function of the Molecular Weights of Vapors,' Industrial and Engineering Chemistry, Vol. 31, No.4, 1939, pp. 464-477   DOI
9 Sam Han, John Peddieson, Jr. and David Gregory, 'Ejector Primary Flow Molecular Weight Effects in an Ejector-Ram Rocket Engine', Journal of Propulsion and Power, Vol. 1, No.3, 2002, pp 592-599
10 진정근, 김세훈, 권세진, '주유동 기체의 분자량과 비열이 초음속 이젝터 성능에 미치는 영향', 한국항공우주학회 춘계학술발표회 논문집, 2004
11 Emanuel, G., 'Optimum Performance for a Single-Stage Gaseous ejector', AIAA Journal, Vol. 12, No.9, 1976, pp. 1292-1296
12 Willmarth, W.W., Nagamatsu, H.T., 'The Condensation of Nitrogen in Hypersonic nozzle', Journal of Applied Physics, Vol. 23, No. 10, 1952, pp. 1089-1095   DOI