图书馆订阅: Guest
Begell Digital Portal Begell 数字图书馆 电子图书 期刊 参考文献及会议录 研究收集
雾化与喷雾
影响因子: 1.262 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

卷:
卷 29, 2019 卷 28, 2018 卷 27, 2017 卷 26, 2016 卷 25, 2015 卷 24, 2014 卷 23, 2013 卷 22, 2012 卷 21, 2011 卷 20, 2010 卷 19, 2009 卷 18, 2008 卷 17, 2007 卷 16, 2006 卷 15, 2005 卷 14, 2004 卷 13, 2003 卷 12, 2002 卷 11, 2001 卷 10, 2000 卷 9, 1999 卷 8, 1998 卷 7, 1997 卷 6, 1996 卷 5, 1995 卷 4, 1994 卷 3, 1993 卷 2, 1992 卷 1, 1991

雾化与喷雾

DOI: 10.1615/AtomizSpr.2019030177
pages 217-250

BREAKUP DYNAMICS AND NEAR NOZZLE SPRAY FLUCTUATIONS IN A TWIN-JET CROSS-FLOW AIRBLAST ATOMIZER

Shirin Patil
Thermodynamics and Combustion Lab, Department of Mechnaical Engineering, Indian Institute of Technology, Madras, 600036, India
Srikrishna Sahu
Thermodynamics and Combustion Lab, Department of Mechnaical Engineering, Indian Institute of Technology, Madras, 600036, India

ABSTRACT

The current research work investigates a twin-jet cross-stream airblast atomizer, which allows radial injection of two opposite liquid jets from a central hub into laterally flowing high-speed air within a surrounding annular region. The aim is to understand the dynamics of the primary breakup process of both jets and spray fluctuations at the immediate exit of the injector. Experiments were performed for a range of aerodynamic Weber number (Weg = 2–40) and momentum flux ratio (MFR = 1–7) that ensured jet-wall interactions leading to liquid films were avoided prior to completion of the jet breakup. High-speed shadowgraph images were captured for time-resolved visualization of the two liquid jets simultaneously and also, separately, for spray droplets immediately downstream of the injector exit. The primary jet breakup images were processed to measure not only the mean jet breakup/penetration length and trajectory within the atomizer, but also fluctuations of breakup/penetration length and initial instability on the liquid-air interfaces. In addition, jet-to-jet variation in the primary breakup process was also examined. The image processing of shadowgraph images of the droplets led to measurement of instantaneous droplet number count and droplet size and velocity distribution, which showed significant temporal variation. In addition, the fluctuations of local liquid mass flux were measured, which was found to be comparable to the mean mass flux. The results highlight the upstream influence of jet breakup unsteadiness on the downstream spatiotemporal fluctuations of spray characteristics.

REFERENCES

  1. Aalburg, C., van Leer, B., Faeth, G.M., and Sallam, K.A., Properties of Nonturbulent Round Liquid Jets in Uniform Gaseous Cross Flows, Atomization Sprays, vol. 15, no. 3, pp. 271-294,2005.

  2. Ahn, K., Kim, J., and Yoon, Y., Effects of Orifice Internal Flow on Transverse Injection Into Subsonic Crossflows: Cavitation and Hydraulic Flip, Atomization Sprays, vol. 16, no. 1, pp. 15-34,2006.

  3. Arienti, M. and Soteriou, M.C., Time-Resolved Proper Orthogonal Decomposition of Liquid Jet Dynamics, Phys. Fluids, vol. 21, no. 11, p. 112104,2009.

  4. Arienti, M., Soteriou, M., Hagen, G., and Corn, M., Analysis of Liquid Jet Atomization Dynamics Using Proper Orthogonal Decomposition, Proc. of 47th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition, p. 999,2009.

  5. Becker, J. and Hassa, C., Liquid Fuel Placement and Mixing of a Generic Aeroengine Premix Module at Different Operating Conditions, Proc. of ASME Turbo Expo 2002: Power for Land, Sea, and Air, American Society of Mechanical Engineers, pp. 649-657,2002.

  6. Becker, J., Heitz, D., and Hassa, C., Spray Dispersion in a Counter-Swirling Double-Annular Air Flow at Gas Turbine Conditions, Atomization Sprays, vol. 14, no. 1, 2004.

  7. Bhandari, D., Grover, R., Puthenveettil, S.K., Chakravarthy, S.R., Mishra, R., Naik, P., and Sekar, J., Char-acterization of Atomization inside a Dry Low Emission (DLE) Premixer, Proc. of ICLASS 2018, 14th Triennial International Conf. on Liquid Atomization and Spray Systems, Chicago, IL, USA, 2018.

  8. Birouk, M., Iyogun, C., and Popplewell, N., Role of Viscosity on Trajectory of Liquid Jets in a Cross-Airflow, Atomization Sprays, vol. 17, no. 3, pp. 267-287,2007.

  9. Bolszo, C.D., McDonell, V.G., Gomez, G.A., and Samuelsen, G.S., Injection of Water-in-Oil Emulsion Jets Into a Subsonic Crossflow: An Experimental Study, Atomization Sprays, vol. 24, no. 4, pp. 303-348,2014.

  10. Broumand, M. and Birouk, M., Two-Zone Model for Predicting the Trajectory of Liquid Jet in Gaseous Crossflow, AIAA J, vol. 54, no. 1,pp. 1499-1511,2016.

  11. Broumand, M., Ahmed, M.M., and Birouk, M., Experimental Investigation of Spray Characteristics of a Liquid Jet in a Turbulent Subsonic Gaseous Crossflow, Proc. Combust. Inst., vol. 37, no. 3, pp. 3237-3244,2019.

  12. Brown, C.T. and McDonell, V.G., Near Field Behavior of a Liquid Jet in a Crossflow, Proc. of ILASS Americas 19th Annual Conf. on Liquid Atomization and Spray Systems, 2006.

  13. Burattini, P., Talamelli, A., and Tanzini, G., Experimental Analysis of the Flowfield at the Exit of a Premixer for Combustion Applications, Exper. Thermal and Fluid Sci., vol. 28,no. 7,pp. 781-789,2004.

  14. Dhanuka, S.K., An Experimental Study of the Stable and Unstable Operation of an LPP Gas Turbine Combustor, PhD, University of Michigan, Ann Arbor, Michigan, 2008.

  15. Elshamy, O., Tambe, S., Cai, J., and Jeng, S.M., PIV and LDV Measurements for Liquid Jets in Crossflow, Proc. of 45th AIAA Aerospace Sciences Meeting and Exhibit, p. 1338,2007.

  16. Eriksson, P., Orbay, R., and Klingmann, J., Experimental Investigations of a Low Weber Liquid Spray in Air Cross Flow, Proc. of 10th Int. Conf. on Liquid Atomization and Spray Systems, ICLASS, 2006.

  17. Freitag, S., Experimental Investigations of Fuel Preparation in a Swirling Airflow under Realistic Conditions without Reaction in a Combustor Model with a Point Fuel Source, CEAS Aeronautical J., pp. 475-490,2018.

  18. Hadjiyiannis, C., Investigation of Break-Up Process of Liquids and Downstream Spray Characteristics in Air-Blast Atomisers, PhD, Imperial College, South Kensington, London, 2014.

  19. Hardalupas, Y., Taylor, A., and Whitelaw, J., Characteristics of the Spray from a Diesel Injector, Int. J. Multiphase Flow, vol. 18, no. 2, pp. 159-179,1992.

  20. Huang, Y. and Yang, V., Dynamics and Stability of Lean-Premixed Swirl-Stabilized Combustion, Prog. Energy Combust. Sci, vol. 35, no. 4, pp. 293-364,2009.

  21. Inamura, T. and Nagai, N., Spray Characteristics of Liquid Jet Traversing Subsonic Airstreams, J. Propulsion Power, vol. 13, no. 2, pp. 250-256,1997.

  22. Iyogun, C., Birouk, M., and Popplewell, N., Trajectory of Water Jet Exposed to Low Subsonic Cross-Flow, Atomization Sprays, vol. 16, no. 8, pp. 963-980,2006.

  23. Kourmatzis, A., Lowe, A., and Masri, A., Combined Effervescent and Airblast Atomization of a Liquid Jet, Exper. Thermal Fluid Sci., vol. 75, pp. 66-76,2016.

  24. Kumar, A. and Sahu, S., Liquid Jet Breakup Unsteadiness in a Coaxial Air-Blast Atomizer, Int. J. Spray Combustion Dyn., vol. 10, no. 3, pp. 211-230,2018.

  25. Lasheras, J.C. and Hopfinger, E., Liquid Jet Instability and Atomization in a Coaxial Gas Stream, Ann. Rev. FluidMech, vol. 32, no. 1, pp. 275-308,2000.

  26. Lasheras, J., Villermaux, E., and Hopfinger, E., Break-Up and Atomization of a Round Water Jet by a High-Speed Annular Air Jet, J. Fluid Mech, vol. 357, pp. 351-379,1998.

  27. Liu, Y., Sun, X., Sethi, V., Nalianda, D., Li, Y.G., and Wang, L., Review of Modern Low Emissions Com-bustion Technologies for Aero Gas Turbine Engines, Progr. Aerospace Sci., vol. 94, pp. 12-45,2017.

  28. Madabhushi, R.K., A Model for Numerical Simulation of Breakup of a Liquid Jet in Crossflow, Atomization Sprays, vol. 13, no. 4, pp. 413-424,2003.

  29. Mazallon, J., Dai, Z., and Faeth, G., Primary Breakup of NonturbulentRound Liquid Jets in Gas Crossflows, Atomization Sprays, vol. 9, no. 3, pp. 291-312,1999.

  30. Nguyen, Q.V., Measurements of Equivalence Ratio Fluctuations in a Lean Premixed Prevaporized (LPP) Combustor and Its Correlation to Combustion Instability, Proc. of ASME Turbo Expo 2002: Power for Land, Sea, and Air, New York: American Society of Mechanical Engineers, pp. 275-283,2002.

  31. No, S.Y., A Review on Empirical Correlations for Jet/Spray Trajectory of Liquid Jet in Uniform Cross Flow, Int. J. Spray Combustion Dyn., vol. 7, no. 4, pp. 283-313,2015.

  32. Patil, S. and Sahu, S., Breakup Dynamics in a Twin-Jet Crossflow Airblast Atomizer, Proc ofICLASS 2018, 14th Triennial Int. Conf. on Liquid Atomization and Spray Systems, Chicago, IL, USA, 2018.

  33. Prakash, R.S., Sinha, A., Tomar, G., and Ravikrishna, R., Liquid Jet in Crossflow-Effect of Liquid Entry Conditions, Exp. Thermal Fluid Sci., vol. 93, pp. 45-56,2018.

  34. Sallam, K., Aalburg, C., and Faeth, G., Breakup of Round Nonturbulent Liquid Jets in Gaseous Crossflow, AIAA J, vol. 42, no. 12, pp. 2529-2540,2004.

  35. Sallam, K., Ng, C., Sankarakrishnan,R., Aalburg, C., and Lee, K., Breakup of Turbulent and Non-Turbulent Liquid Jets in Gaseous Crossflows, Proc. of 44th AIAA Aerospace Sciences Meeting and Exhibit, p. 1517, 2006.

  36. Schetz, J.A. and Padhye, A., Penetration and Breakup of Liquids in Subsonic Airstreams, AIAA J, vol. 15, no. 10, pp. 1385-1390,1977.

  37. Sedarsky, D., Paciaroni, M., Berrocal, E., Petterson, P., Zelina, J., Gord, J., andLinne, M., Model Validation Image Data for Breakup of a Liquid Jet in Crossflow: Part I, Exp. Fluids, vol. 49, no. 2, pp. 391-408, 2010.

  38. Sikroria, T., Kushari, A., Syed, S., and Lovett, J.A., Experimental Investigation of Liquid Jet Breakup in a Cross Flow of a Swirling Air Stream, J. Eng. Gas Turbines Power, vol. 136, no. 6, p. 061501,2014.

  39. Song, J., Cain, C.C., and Lee, J.G., Liquid Jets in Subsonic Air Crossflow at Elevated Pressure, J. Eng. Gas Turbines Power, vol. 137, no. 4, p. 041502,2015.

  40. Stenzler, J.N., Lee, J.G., Santavicca, D.A., and Lee, W., Penetration of Liquid Jets in a Cross-Flow, Atomization and Sprays, vol. 16, no. 8, pp. 887-906,2006.

  41. Tambe, S., Jeng, S.M., Mongia, H., and Hsiao, G., Liquid Jets in Subsonic Crossflow, Proc. of 43rd AIAA Aerospace Sciences Meeting and Exhibit, p. 731,2005.

  42. Varga, C.M., Lasheras, J.C., and Hopfinger, E.J., Initial Breakup of a Small-Diameter Liquid Jet by a High-Speed Gas Stream, J. Fluid Mech, vol. 497, pp. 405-434,2003.

  43. Villermaux, E., Mixing and Spray Formation in Coaxial Jets, J. Propul. Power, vol. 14, no. 5, pp. 807-817, 1998.

  44. Villermaux, E. and Clanet, C., Life of a Flapping Liquid Sheet, J. Fluid Mech., vol. 462, pp. 341-363, 2002.

  45. Villermaux, E., Rehab, H., and Hopfinger, E., Breakup Regimes and Self-Sustained Pulsations in Coaxial Jets, Meccanica, vol. 29, no. 4, pp. 393-401,1994.

  46. Wang, M., Broumand, M., and Birouk, M., Liquid Jet Trajectory in a Subsonic Gaseous Cross-Flow: An Analysis of Published Correlations, Atomization Sprays, vol. 26, no. 11, pp. 1083-1110,2016.

  47. Wang, Q., Mondragon, U., Brown, C., and McDonell, V.G., Characterization of Trajectory, Break Point, and Break Point Dynamics of a Plain Liquid Jet in a Crossflow, Atomization Sprays, vol. 21, no. 3, pp. 203-219,2011.

  48. Wu, P.K., Kirkendall, K.A., Fuller, R.P., and Nejad, A.S., Breakup Processes of Liquid Jets in Subsonic Crossflows, J. Propuls. Power, vol. 13, no. 1, pp. 64-73,1997.

  49. Wu, P.K., Kirkendall, K.A., Fuller, R.P., and Nejad, A.S., Spray Structures of Liquid Jets Atomized in Subsonic Crossflows, J. Propuls. Power, vol. 14, no. 2, pp. 173-182,1998.

  50. Yoon, H.J., Hong, J.G., and Lee, C.W., Correlations for Penetration Height of Single and Double Liquid Jets in Cross Flow under High-Temperature Conditions, Atomization Sprays, vol. 21, no. 8, pp. 673-686, 2011.

  51. Zheng, Y. and Marshall, A.W., Characterization of the Initial Spray From Low-Weber-Number Jets in Crossflow, Atomization Sprays, vol. 21, no. 7, pp. 575-589,2011.


Articles with similar content:

Impinging Jet Passive Control for Wall Shear Stress Enhancement
International Heat Transfer Conference 15, Vol.58, 2014, issue
Kodjovi Sodjavi, B. Montagne, Magdalena Kristiawan, Ilinca Nastase, Amina Meslem, Florin Bode
OPTICAL VISUALIZATION AND MEASUREMENT OF LIQUID JET CORE IN A COAXIAL ATOMIZER WITH ANNULAR SWIRLING AIR
Journal of Flow Visualization and Image Processing, Vol.25, 2018, issue 3-4
Srikrishna Sahu, Abhijeet Kumar
PRIMARY BREAKUP OF ROUND AERATED-LIQUID JETS IN SUPERSONIC CROSSFLOWS
Atomization and Sprays, Vol.16, 2006, issue 6
C. Aalburg, Thomas A. Jackson, G. M. Faeth, C. D. Carter, K.-C. Lin, Khaled A. Sallam
RESPONSE OF LIQUID JET TO MODULATED CROSSFLOW
Atomization and Sprays, Vol.24, 2014, issue 2
Jong Guen Lee, Jinkwan Song, Chandrasekar Ramasubramanian
SPRAY CHARACTERISTICS OF A PRESSURE-SWIRL FUEL INJECTOR SUBJECTED TO A CROSSFLOW AND A COFLOW
Atomization and Sprays, Vol.21, 2011, issue 8
Barry Kiel, Ryan G. Batchelor, Amy Lynch, Mark Reeder, James Gord, Joseph Miller