한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제19권4호
  • /
  • Pages.8-14
  • /
  • 2015
  • /
  • 1226-6027(pISSN)
  • /
  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
권호 표지
DOI QR코드

DOI QR Code

Closed-type 스월 인젝터의 스월 챔버 형상에 따른 분무특성 연구

Spray Characteristics of Closed-type Swirl Injectors with Varying Swirl Chamber Geometry

  • Chung, Yunjae (Department of Aerospace Engineering, Seoul National University) ;
  • Jeong, Seokkyu (Department of Aerospace Engineering, Seoul National University) ;
  • Oh, Sukil (Department of Aerospace Engineering, Seoul National University) ;
  • Yoon, Youngbin (Department of Aerospace Engineering, Seoul National University)
  • 투고 : 2015.05.13
  • 심사 : 2015.07.06
  • 발행 : 2015.08.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Purdue 대학교의 Ismailov 등이 수행한 closed-type 스월 인젝터의 동특성에 대한 모델링 및 계산 결과를 실험을 통해 확인하고자 하는 과정의 일환으로 수행된 연구이다. Closed-type 스월 인젝터의 스월 챔버의 길이와 지름의 영향이 인젝터의 동특성에 미치는 영향을 관찰하고자 스월 챔버의 길이와 지름을 변화시킬 수 있는 인젝터를 제작하였다. 이러한 과정에서 closed-type 스월 인젝터의 동특성에 대한 실험을 진행하기에 앞서서 정적인 분무 특성을 확인하였다. 인젝터 전단에 설치된 유량계를 통하여 유량을 확인하였으며, Lefebvre의 방식에 따라 closed-type 스월 인젝터의 오리피스에 전극을 설치하여 매니폴드 압력에 따른 액막 두께의 변화를 측정하였다. 또한 압력별로 촬영된 순간적인 분무 사진을 통하여 매니폴드 압력에 따른 분사각과 분열길이의 변화를 관찰하였다.

This study has been done as a preliminary work in the process of confirming the modeling and calculation results on the dynamic characteristics of closed-type swirl injector which were performed by Ismailov et al. in Purdue university. Closed-type swirl injectors with replaceable swirl chamber parts were designed and manufactured. The steady state spray characteristics of closed-type swirl injector with varying swirl chamber length and diameter were verified. Mass flow rate was measured with a mass flow meter installed in front of the injector, and liquid film thickness was measured by Lefebvre's method with electrodes installed at the orifice of the injector. Variation of spray cone angle and break-up length were investigated from the spray images captured under different manifold pressure conditions.

키워드

참고문헌

  1. Bazarov, V. and Yang, V., "Liquid-Propellant Rocket Engine Injector Dynamics," Journal of Propulsion and Power, Vol. 14, No. 5, pp. 797-806, 1998. https://doi.org/10.2514/2.5343
  2. Ismailov, M. and Heister, S., "Dynamic Response of Rocket Swirl Injectors, Part I Wave," Journal of Propulsion and Power, Vol. 27, No. 2, pp. 402-411, 2011. https://doi.org/10.2514/1.B34044
  3. Ismailov, M. and Heister, S., "Dynamic Response of Rocket Swirl Injectors, Part II Nonlinear Dynamic Response," Journal of Propulsion and Power, Vol. 27, No. 2, pp. 412-421, 2011. https://doi.org/10.2514/1.B34045
  4. Suyari, M. and Lefebvre, A.H, "Film Thickness Measurements in a Simplex Swirl Atomizer," Journal of Propulsion and Power, Vol. 2, No. 6, pp. 528-533, 1986. https://doi.org/10.2514/3.22937
  5. Bayvel, L. and Orzechowski, Z., Liquid Atomization, Taylor & Francis, Washington, D.C., U.S.A., 1993.
  6. Inamura, T., Tamura, H. and Sakamoto, H., "Characteristics of Liquid Film and Spray Injected from Swirl Coaxial Injector," Journal of Propulsion and Power, Vol. 19, No. 4, pp. 632-639, 2003. https://doi.org/10.2514/2.6151
  7. Lefebvre, A.H., Atomization and Sprays, Hemisphere, New York, N.Y., U.S.A., 1989.
  8. Suyari, M. and Lefebvre, A.H, "Film Thickness Measurements in a Simplex Swirl Atomizer," Journal of Propulsion and Power, Vol. 2, No. 6, pp. 528-533, 1986. https://doi.org/10.2514/3.22937
  9. Rizk, N.K. and Lefebvre, A.H., "Internal Flow Characteristics of Simplex Swirl Atomizers," Journal of Propulsion and Power, Vol. 1, No. 3, pp. 193-199, 1985. https://doi.org/10.2514/3.22780
  10. Kim, S., Khil, T., Kim, D. and Yoon, Y., "Effect of Geometric Parameters on the Liquid Film Thickness and Air Core Formation in a Swirl Injector," Measurement Science and Technology, Vol. 20, No. 1, pp. 015403, 2009. https://doi.org/10.1088/0957-0233/20/1/015403