Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
권호 표지
DOI QR코드

DOI QR Code

Influence of Critical Point of Hydrocarbon Jet Injected into Near-Critical Environment on Injection Behavior

근임계 환경으로 분사되는 탄화수소 제트의 임계점이 분사거동에 미치는 영향

  • Yoon, Taekyung (Department of Mechanical and Aerospace Engineering, Graduate School, Korea Aerospace University) ;
  • Shin, Dongsoo (Department of Mechanical and Aerospace Engineering, Graduate School, Korea Aerospace University) ;
  • Lee, Keonwoong (Department of Mechanical and Aerospace Engineering, Graduate School, Korea Aerospace University) ;
  • Koo, Jaye (School of Mechanical and Aerospace Engineering, Korea Aerospace University)
  • Received : 2017.06.05
  • Accepted : 2018.01.27
  • Published : 2018.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

Supercritical injection behavior of liquid hydrocarbon compounds, which are used as main components of propellant fuel, was analyzed. Decane and Methylcyclohexane (MCH) with different critical points were selected as experimental fluid and Shadowgraphy technique was used. Decane and MCH behave differently in the initial state under the subcritical condition. However, near the critical point, the enthalpy of evaporation became close to 0, so that phase change into supercritical fluid occurred, not vaporization process, and no breakup of both fluids occurred.

추진기관 연료의 주 성분으로 사용되는 액체 탄화수소 화합물의 초임계 분사 거동 특성을 분석하였다. 임계점의 차이가 있는 Decane과 Methylcyclohexane (MCH)를 실험 유체로 선정하였으며 Shadowgraphy 기법을 사용하였다. 아임계 조건의 동일한 인젝터 초기상태에서 Decane과 MCH는 서로 다른 거동을 보였다. 하지만 임계점 부근에서 증발엔탈피가 0에 가까워져 기화과정이 아닌 초임계 유체로의 상변화가 일어나고, 급격한 밀도변화가 없어 두 가지 유체 모두 분열이 발생하지 않았다.

Keywords

References

  1. Zhong, F.Q., Fan, X.J., Wang, J., Yu, G. and Li, J.G., “Characteristics of compressible flow of Supercritical Kerosene,” Acta Mechanica Sinica, Vol. 28, No. 1, pp. 8-13, 2012. https://doi.org/10.1007/s10409-012-0006-x
  2. Shin, B.C., Kim, D.H., Son, M., Lee, K.W., Song, W.S., Koo, J.Y. and Kwon, O.C., “Macroscopic Analysis on Supercritical Transition of Liquid Hydrocarbon Fuel,” Journal of the Korean Society of Propulsion Engineers, Vol. 20, No. 4, pp. 26-33, 2016. https://doi.org/10.6108/KSPE.2016.20.4.026
  3. Shin, B.C., Kim, D.H., Son, M. and Koo, J.Y., “Effect of Supercritical Environment on Hydrocarbon-fuel Injection,” Journal of Thermal Science, Vol. 26, No. 2, pp. 183-191, 2017. https://doi.org/10.1007/s11630-017-0928-5
  4. Fan, X., Yu, G., Li, J., Zhang, Z. and Sung, C.J., “Investigation of Vaporized Kerosene Injection in a Supersonic Model Combustor,” Journal of Propulsion and Power, Vol. 22, No. 1, pp. 103-110, 2006. https://doi.org/10.2514/1.15427
  5. Branam, R. and Mayer, W., “Characterization of Cryogenic Injection at Supercritical Pressure,” Journal of Propulsion and Power, Vol. 19, No. 3, pp. 342-355, 2003. https://doi.org/10.2514/2.6138
  6. Kim, D.H., Lee, K.W., Son, M. and Koo, J.Y., “Visualizations of Gas-centered Swirl Sprays in Sub to Super Critical Conditions,” Journal of the Korean Society of Propulsion Engineers, Vol. 18, No. 3, pp. 26-33, 2014. https://doi.org/10.6108/KSPE.2014.18.3.026
  7. Mayer, W., Schik, A., Schweitzer, C. and Schaffler, M., "Injection and Mixing Processes in High Pressure LOX/GH2 Rocket Combustors," 32nd Joint Propulsion Conference and Exhibit, Lake Buena Vista, F.L., U.S.A., AIAA 1996-2620, July 1996.
  8. Smith, J., Klimenko, D., Clauss, W. and Mayer, W., "Supercritical LOX/Hydrogen Rocket Combustion Investigations Using Optical Diagnostics," 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Indianapolis, I.N., U.S.A., AIAA 2002-4033, July 2002.
  9. Kim, T.H., Kim, Y.M. and Kim, S.K., "Modeling for Gaseous Methane/Liquid Oxygen Combustion Processes at Supercritical Pressure," Korean Society of Propulsion Engineers Fall Conference, Jeju, Korea, pp. 85-88, Nov. 2010.
  10. Kang, J.S., Hu, J.Y., and Sung, H.K., "Analysis on Flame Structure of Surrogate Kerosene/GOx and Numerical Simulation of Combustion in a Coaxial Shear Injector under Supercritical Conditions," The Korean Society of Propulsion Engineers Spring Conference, Seoul, Korea, pp. 330-335, May 2014.
  11. Salgues, D., Mouis, G., Lee, S.Y., Kalitan, D., Pal, S. and Santoro, R., "Shear and Swirl Coaxial Injector Studies of LOX/GCH4 Rocket Combustion Using Non-Intrusive Laser Diagnostics," 44th AIAA Aerospace Sciences Meeting and Exhibit, Reno, N.V., U.S.A., AIAA 2006-757, Jan. 2006.
  12. Kim, K.J., Heo, J.Y., Kim, J.C., Koo, J.Y. and Sung, H.G., “A Comparative Study of Single Component Thermophysical Properties using the Real Gas Equation of State at Supercritical Conditions,” Journal of the Korean Society of Propulsion Engineers, Vol. 14, No. 3, pp. 39-51, 2010.