Advertisement

Characterization of Confined Liquid Jet Injected into Oscillating Air Crossflow

  • Virginel Bodoc
  • Anthony Desclaux
  • Pierre Gajan
  • Frank Simon
  • Geoffroy Illac
INCA

Abstract

The aim of this work is to study the role of the liquid phase in the thermo-acoustic coupling that leads to combustion instabilities. In multipoint injection systems, the liquid fuel is injected through orifices as jets which are destabilized by the high-speed air flowing in a transverse direction. This paper is focused on the effect of an acoustic excitation imposed on the air flow on the various liquid features observed in actual fuel injection systems. This concerns the initial jet trajectory, its breakup, the formation and transport of the resulting spray, the liquid film formation on walls and its final atomization at the outlet of the injection system. Experimental investigations were performed on a simplified geometry designed to reproduce these main phenomena. Phase-averaged processing of the experimental data is used to analyze the relationship between the acoustic excitation and the liquid phase behavior. In particular, the phase delays imposed by the various processes involved are analyzed. The processing of high-speed video recordings reveals harmonic oscillation of the liquid column which periodically breaks into a spray structure or impacts the opposite wall, forming a liquid film. Using PDA measurements, it is shown that the resulting two-phase flow consists of alternating dense and diluted zones transported by the air flow. At the end of the channel, the liquid film flowing on the wall opposite the liquid jet is periodically atomized through the oscillating shear forces imposed by the air flow.

Keywords

Thermo-acoustic instabilities Liquid jet Cross flow Acoustics 

References

  1. 1.
    Higgins, B.: On the sound produced by a current of hydrogen gas passing through a tube. Journal of Natural Philosophy, Chemistry and the Arts. 1, 129–131 (1802)Google Scholar
  2. 2.
    Rijke, P.: Notice of a new method of causing a vibration of the air contained in a tube open at both ends. Philosophical Magazine: Series 4. 17(116), 419–422 (1859)Google Scholar
  3. 3.
    Rayleigh, J.: The Theory of Sound. Dover, New York (1945)zbMATHGoogle Scholar
  4. 4.
    Harrje, D.J., Readon, F.H.: Liquid propellant rocket instability. NASA SP. 194, (1972)Google Scholar
  5. 5.
    Gajan, P., Simon, F., Orain, M., Bodoc, V.: Investigation and Modeling of Combustion instabilities in Aero Engines, Aerospace lab Journal. ONERA. (11), AL11–AL19 (2016)Google Scholar
  6. 6.
    Candel, S., Durox, D., Schuller, T., Palies, P., Bourgouin, J.-F., Moeck, J.P.: Progress and challenges in swirling flame dynamics. Comptes Rendus Mécanique. 340(11–12), 758–768 (2012).  https://doi.org/10.1016/j.crme.2012.10.024 CrossRefGoogle Scholar
  7. 7.
    Putnam, A., Dennis, W.: A survey of organ-pipe oscillations in combustion systems. J. of Acoust. Soc. of America. 28(2), 246–259 (1956)CrossRefGoogle Scholar
  8. 8.
    Nicoud, F., Poinsot, T.: Thermoacoustic instabilities: should the Rayleigh criterion be extended to include entropy changes? Combustion and Flame. 142(1–2), 153–159 (2005)CrossRefGoogle Scholar
  9. 9.
    Strahle, W.: On combustion generated noise. J. Fluid Mech. 49(2), 399–414 (1971)zbMATHCrossRefGoogle Scholar
  10. 10.
    Ducruix, S., Schuller, T., Durox, D., Candel, S.: Combustion dynamics and instabilities: elementary coupling and driving mechanisms. J. Propuls. Power. 19(5), 722–734 (2003)CrossRefGoogle Scholar
  11. 11.
    Eckstein, J., Freitag, E., Hirsch, C., Sattelmayer, T.: Experimental study on the role of entropy waves in low-frequency oscillations in a RQL combustor. J. Eng. Gas Turbines Power. 128(2), 264–270 (2006)CrossRefGoogle Scholar
  12. 12.
    Giuliani, F., Gajan, P., Diers, O., Ledoux, M.: Influence of pulsed entries on a spray generated by an airblast injection device: an experimental analysis on combustion instability processes in aeroengines. Proceeding of the Combustion Institute. 29(1), 91–98 (2002)CrossRefGoogle Scholar
  13. 13.
    Gajan, P., Strzelecki, A., Platet, B., Lecourt, R., Giuliani, F.: Investigation of spray behavior downstream of an Aeroengine injector with acoustic excitation. J. Propuls. Power. 23(2), 390–397 (2007)CrossRefGoogle Scholar
  14. 14.
    Giuliani F. (2002). Analysis on the behaviour of an aeroengine air-blast injection. Toulouse: PhD Thesis, ISAE Google Scholar
  15. 15.
    Apeloig, J.M., d’Herbigny, H.X., Simon, F., Gajan, P., Orain, M., Roux, S.: Liquid-fuel behavior in an aeronautical injector submitted to Thermoacoustic instabilities. J. Propuls. Power. 31(1), 309–319 (2015)CrossRefGoogle Scholar
  16. 16.
    Sallam, K.A., Aalburg, C., Faeth, G.M.: Breakup of round nonturbulent liquid jets in gaseous crossflow. AIAA J. 13(1), 64–73 (2004)Google Scholar
  17. 17.
    Wu, P.K., Kirkendall, K.A., Fuller, R.P.: Breakup processes of liquid jets in subsonic crossflows. J. Propuls. Power. 31(1), 309–319 (1997)Google Scholar
  18. 18.
    Mazallon, J., Dai, Z., Faeth, G.M.: Primary breakup of nonturbulent round liquid jets in gas Crossflows. Atomization and Sprays. 9(3), 291–311 (1999)CrossRefGoogle Scholar
  19. 19.
    Anderson T.J. Proscia W., Cohen J.M. (2001). Modulation of a liquid-fuel jet in an unsteady cross-flow. ASME Turbo expo 2001. New Orleans, Louisiana: ASME. Paper N° 2001-GT-0048Google Scholar
  20. 20.
    Bunce K., Lee J.G., Santavicca D.A. (2006), Characterisation of liquid jets-in_crossflow under high temperature, high velocity non-oscillating and oscillating flow conditions, AIAA paper 2006-1225, 44th AIAA Aerospace Sciences Meeting and Exhibit, RenoGoogle Scholar
  21. 21.
    Song J., Ramasubramanian C., Lee J.G. (2015). Characterization of spray formed by liquid jet injected into oscillating air crossflow. ASME Turbo Expo. Montréal, Canada: ASME. Paper N° GT2015–43726Google Scholar
  22. 22.
    Sharma, C., Lee, J.G.: Dynamics of near-field and far-field spray formed by liquid jet in oscillating crossflow. Atomization and Sprays. 28(1), 1–21 (2018)CrossRefGoogle Scholar
  23. 23.
    Hussain A., Reynolds W. (1970) The mechanics of an organized wave in turbulent shear flow. J. Fluid Mech. 41, part 2, 241–258Google Scholar
  24. 24.
    Brundrett, E., Baines, W.D.: The production and diffusion of vorticity in duct flow. J. Fluid Mech. 19(3), 375–394 (1964)zbMATHCrossRefGoogle Scholar
  25. 25.
    Munjal, M.L.: Acoustics of Ducts and Mufflers with Application to Exhaust and Ventilation System Design. A Wiley Interscience Publication (1987)Google Scholar
  26. 26.
    Åbom, M., Bodén, H.: Error analysis of two-microphone measurements in ducts with flow. J. Acoust. Soc. Am. 83, 2429–2438 (1988)CrossRefGoogle Scholar
  27. 27.
    Zuzio D., Thuillet S., Senoner J.M., Laurent C., Rouzaud O., Gajan P. (2017). Multi-Solver LES Simulation of the Atomization of a Cross-Flow Liquid Jet in a Channel, Colloque INCA, SAFRAN-TechGoogle Scholar

Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Virginel Bodoc
    • 1
  • Anthony Desclaux
    • 1
  • Pierre Gajan
    • 1
  • Frank Simon
    • 1
  • Geoffroy Illac
    • 1
  1. 1.ONERA, The French Aerospace LabToulouseFrance

Personalised recommendations