JOURNAL BROWSE
Search
Advanced SearchSearch Tips
The Affects of Molecular Properties of Motive Gas on Supersonic Ejection
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
The Affects of Molecular Properties of Motive Gas on Supersonic Ejection
Jin, Jung-Kun; Kwon, Se-Jin; Kim, Se-Hoon;
  PDF(new window)
 Abstract
The motive gas of a supersonic ejector is supplied from different sources depending on the application. The performance of an ejector that is represented by the secondary flow pressure, starting and unstarting pressures heavily depends on the molecular properties of the motive gas. The effects of specific heat ratio of the motive gas were investigated experimentally for an axi-symmetric annular injection type supersonic ejector. Both the starting pressure and unstarting pressure, however, decreased with the increase of the specific heat ratio of the motive gas. It was discovered that the secondary flow pressure increased as the specific heat ratio of the motive gas decreased even if the stagnation pressure of the motive flow was invariant. However, when the motive gas flow nozzle area ratio is large enough for the motive gas to be condensed, different tendency was observed.
 Keywords
Ejector;Chemical laser;Condensation;
 Language
English
 Cited by
 References
1.
Sun, D. W., and Eames, I. W., 1995, "Recent developments in the design theories and applications of ejectors - a review," Journal of the Institute of Energy, Vol. 68, pp. 65-79

2.
Alperin, M. and Wu, J. J., 1983, "Thrust augmenting ejector, Part I.," AIAA Journal, Vol. 21, No. 10, pp. 1428-1436 crossref(new window)

3.
Alperin, M. and Wu, J. J., 1983, "Thrust augmenting ejector, Part II.," AIAA Journal, Vol. 21, No. 12, pp. 1698-1706 crossref(new window)

4.
T. G. Tillman and W. M. Presz Jr., 1995, "Thrust Characteristics of a Supersonic Mixer Ejector," Journal of Propulsion and Power, Vol. 11, No.5, pp. 931-937 crossref(new window)

5.
Wendy S. Barankiewicz, Gail P. Perusek and Mounir B. Ibrahim, 1994, "Approximate Similarity Principle for a Full-Scale STOVL Ejector," Journal of Propulsion and Power, Vol. 10, No. 2, pp. 198-203 crossref(new window)

6.
Takeshi Kanda and Kenji Kudo, 2002, "A Conceptual Study of a Combined Cycle Engine for an Aerospace Plane," AIAA paper 2002-5146

7.
Geothert, B. H., 1962, "High altitude and space simulation testing," ARS Journal, Vol. 32, No. 12, pp. 872-882 crossref(new window)

8.
Annamalai, K., Visvanathan, K., Sriramulu, V., and Bhaskaran, K. A., 1998, "Evaluation of the performance of supersonic exhaust diffuser using scaled down models," Experimental Thermal and Fluid Science, Vol. 17, pp. 217-229 crossref(new window)

9.
Boreisho, A. S., Khailov,V. M., Malkov, V. M., and Savin, A. V., 2000, "Pressure recovery system for high power gas flow chemical laser," XIII International symposium on gas flow & Chemical lasers - High power laser conference, International Society for Optical Engineering, Bellingham, WA, pp. 401-405

10.
Malkov, V. M., Boreisho, A. S., Savin, A. V., Kiselev, I. A., and Orlov, A. E., 2000, "Choice of working parameters of pressure recovery systems for high-power gas flow chemical lasers," XIII International symposium on gas flow & Chemical lasers - High power laser conference, International Society for Optical Engineering, Bellingham, WA, pp. 419-422

11.
Sehoon Kim and Sejin Kwon, 2006, "Experimental Determination of Geometric Parameters for an Annular Injection Type Supersonic Ejector," Journal of Fluid Engineering, Vol. 28, pp. 1164-1171

12.
Dutton, J. C., Mikkelsen, C. D., and Addy, A. L., 1982, "A theoretical and experimental investigation of the constant area, supersonic-supersonic ejector," AIAA Journal, Vol. 20, No. 10, pp. 1392-1400 crossref(new window)

13.
Work, L. T. and Haedrich, V. W., H.T., 1939, "Performance of Ejectors as a Function of the Molecular Weights of Vapors," Industrial and Engineering Chemistry, Vol. 31, No. 4, pp. 464-477 crossref(new window)

14.
Sam Han, John Peddieson, Jr. and David Gregory, 2002, "Ejector Primary Flow Molecular Weight Effects in an Ejector-Ram Rocket Engine," Journal of Propulsion and Power, Vol. 1, No. 3, pp. 592-599

15.
Emanuel, G., 1976, "Optimum Performance for a Single-Stage Gaseous Ejector," AIAA Journal, Vol. 14, No. 9, pp. 1292-1296 crossref(new window)

16.
Yunus A. Çengel and Michael A. Boles, 1998, Thermodynamics, An Engineering Approach, 3rd ed., McGraw-Hill, International Edition

17.
Willmarth, W.W. and Nagamatsu, H.T., 1952, "The Condensation of Nitrogen in Hypersonic nozzle", Journal of Applied Physics, Vol. 23, No. 10, pp. 1089-1095 crossref(new window)

18.
Daum, F. L., 1963, "Air Condensation in a Hypersonic Wind Tunnel," AIAA Journal, Vol. 1, No. 5, pp. 1043-1046 crossref(new window)