한국분무공학회지 (Journal of ILASS-Korea)

  • 제22권4호
  • /
  • Pages.159-168
  • /
  • 2017
  • /
  • 1226-2277(pISSN)
  • /
  • 2288-9051(eISSN)
한국분무공학회 (Institute for Liquid Atomization and Spray Systems-Korea)
권호 표지
DOI QR코드

DOI QR Code

ANSYS Fluent를 이용한 와류형 분사기의 분무특성 연구

A Study on the Spray Characteristics of Swirl Injectors Using ANSYS Fluent

  • 윤원재 (충북대학교 기계공학부) ;
  • 이봄 (충북대학교 기계공학부) ;
  • 안규복 (충북대학교 기계공학부)
  • 투고 : 2017.02.27
  • 심사 : 2017.03.22
  • 발행 : 2017.12.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Numerical studies on the spray characteristics of closed-type and open-type swirl injectors were conducted using ANSYS Fluent. By changing injection pressures, discharge coefficient and spray angle were calculated using the Reynolds stress BSL turbulent model. The numerical results were compared with previous experimental data to examine their accuracy. For a closed-type swirl injector, spray angles matched well with experimental results and discharge coefficients showed approximately 8% differences. On the contrary, discharge coefficients of an open-type swirl injector were similar with experimental result but its spray angles presented around 15% differences. Though the numerical results were not perfectly consistent with experimental data, it is thought that they could be sufficiently used for analyzing spray characteristics, specially which is hard to be measured from experiments. Numerical simulation with different turbulent models was also performed to examine their effects on the numerical results.

키워드

참고문헌

  1. V. G. Bazarov, "Fluid Injectors Dynamics", Mashinostroenie Publication, Moscow, Russia, 1979.
  2. G. S. Gill and W. H. Nurick, "Liquid rocket engine injectors", NASA Rep. SP-8089, 1976.
  3. M. Popp, J. Hulka, V. Yang and M. Habiballah, "Liquid Rocket Thrust Chambers", Progress in Astronautics and Aeronautics, American Institute of Aeronautics and Astronautics, 2004.
  4. N. Ashgriz, "Handbook of Atomization and Sprays: Theory and Applications", New York: Springer, 2011.
  5. Q. Fu and L. Yang, "Visualization studies of the spray from swirl injectors under elevated ambient pressure", Aerospace Science and Technology, Vol. 47, 2015, pp. 154-163. https://doi.org/10.1016/j.ast.2015.09.027
  6. D. J. Kim, J. H. Im, P. G. Han and Y. B. Yoon, "The effect of Operation Conditions and Injector Geometry on the Spray Characteristics of Swirl Injectors", Journal of ILASS-Korea, Vol. 9, No. 1, 2004, pp. 21-29.
  7. D. J. Kim, J. H. Im, H. K and Y. B. Yoon, "Effect of Ambient Gas Density on Spray Characteristics of Swirling Liquid Sheets", Journal of Propulsion and Power, Vol. 23, No. 3, 2007, pp. 603-611. https://doi.org/10.2514/1.20161
  8. J. H. Lee, G. J. Park and Y. B. Yoon, "A Study on Dynamic Characteristics of Gas Centered Swirl Coaxial Injector with Acoustic Excitation by Varying Momentum Flux Ratio", Journal of ILASS-Korea, Vol. 20, No. 3, 2015, pp. 168-174. https://doi.org/10.15435/JILASSKR.2015.20.3.168
  9. G. J. Park, J. H. Lee, I. K Lee and Y. B. Yoon, "Spray Characteristics of Gas-Centered Swirl Coaxial Injectors according to Injection Conditions", Journal of ILASS-Korea, Vol. 19, No. 4, 2014, pp. 167-173. https://doi.org/10.15435/JILASSKR.2014.19.4.167
  10. S. Kim, D. Kim, T. Khil and Y. Yoon, "Effect of Geometry on the Liquid Film Thickness and Formation of Air Core in a Swirl Injector", 43rd AIAA/ASME/SAE/ ASEE Joint Propulsion Conference & Exhibit, 2007.
  11. R. J. Kenny, J. R. Hulka, M. D. Moser and N. O. Rhys, "Effect of Chamber Backpressure on Swirl Injector Fluid Mechanics", Journal of Propulsion and Power, Vol. 25, No. 4, 2009, pp. 902-913. https://doi.org/10.2514/1.38537
  12. A. Datta and S. K. Som, "Numerical prediction of air core diameter, coefficient of discharge and spray cone angle of a swirl spray pressure nozzle", International Journal of Heat and Fluid Flow, Vol. 21, No.4, 2000, pp. 412-419. https://doi.org/10.1016/S0142-727X(00)00003-5
  13. G. Amini, "Liquid flow in a simplex swirl nozzle", International journal of Multiphase Flow, Vol. 79, 2016, pp. 225-235. https://doi.org/10.1016/j.ijmultiphaseflow.2015.09.004
  14. X. Wang, V. Yang, "Supercritical Mixing and Flow Dynamics of Liquid Oxygen,Kerosene Swirl Coaxial Injectors", ICLASS 2015, 13th Triennial International Conference on Liquid Atomization and Spray Systems, 2015.
  15. H. Park, T. Kim and Y. Kim, "Dual Swirl Injector Recess", Journal of the Korean Society of Propulsion Engineers, Vol. 7, No. 3, 2003, pp. 30-37.
  16. H. K. Versteeg and W. Malalasekera, "An introduction to Computational Fluid Dynamics: The finite volume method", Longman Scientific & Technical, 1995.
  17. F. R. Menter, A. V. Garbaruk and Y. Egorov, "Explicit Algebraic Reynolds Stress Models for Anisotropic Wall-Bounded Flow", Progress in Flight Physics, Vol. 3, 2012, pp. 89-104.
  18. ANSYS FLUENT User's Manual v17.2.
  19. A. H. Lefebvre, "Atomization and Sprays", Bristol, PA: Hemisphere Publishing Corporation, 1989.
  20. L. Bayvel and Z. Orzechowski, "Liquid Atomization", Washington, DC: Taylor & Francis, 1993.
  21. Q. Fu, L. Yang, W. Zhang and K. Cui, "Spray Characteristics of an Open-end Swirl Injector", Atomization and Sprays, Vol. 22, No. 5, 2012, pp. 431-445. https://doi.org/10.1615/AtomizSpr.2012005646
  22. K. Ahn and H. S. Choi, "Experimental study on discharge coefficient of swirl injector", ILASS-Asia 2014, 17th Annual Conference on Liquid Atomization and Spray Systems, 2014.