Skip to main content
SpringerLink
Log in

Flow field characteristics in the near field region of particle-laden coaxial jets

  • Research Article
  • Published:
Experiments in Fluids Aims and scope Submit manuscript

Abstract

The effects of solid particles on the flow structure in the near field region of a coaxial water jet are investigated non-intrusively using molecular tagging velocimetry. Glass beads of 240 μm and specific gravity SG of 2.46 are used at three volume loadings of γv=0.03, 0.06, and 0.09% in the central water jet with a Reynolds number of 4.1×104. Measurements are acquired for four annular to central jet velocity ratios in the range 0.11≤ U o/U i≤1.15 at downstream distances up to six inner jet diameters and the results are analyzed for the effects of solid particles on the characteristics of flow. It is found that the addition of particles does not affect the mean fluid velocity profile in this region. The results also indicate a small and moderate enhancement of axial turbulent velocity and radial gradients of velocity fluctuations, respectively, due to the presence of particles.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15

Similar content being viewed by others

References

  • Clift R, Grace JR, Weber ME (1978) Bubbles, drops, and particles. Academic, New York

    Google Scholar 

  • Crowe CT, Gore RA, Troutt TR (1985) Particle dispersion by coherent structures in a free shear flow. Part Sci Tech J 3:149–158

    Article  Google Scholar 

  • Elghobashi SE, Truesdell GC (1993) On the two-way interaction between homogeneous turbulence and dispersed solid particles. I. Turbulence modification. Phys Fluids A5:1790–1801

    Article  MATH  Google Scholar 

  • Fan J, Zhao H, Cen K (1992) An experimental study of two-phase turbulent coaxial jets. Exp Fluids 13:279–287

    Article  Google Scholar 

  • Gendrich CP, Koochesfahani MM (1996) A spatial correlation technique for estimating velocity fields using molecular tagging velocimetry (MTV). Exp Fluids 22:67–77

    Article  Google Scholar 

  • Gore RA, Crow T (1989) Effect of particle size on modulating turbulent intensity. Int J Multiphase Flow 15(2):279–285

    Article  Google Scholar 

  • Hadrich T (2001) Measurement of turbulent spectra of particle-laden flows in a horizontal channel. Exp Fluids 31:401–408

    Article  Google Scholar 

  • Hardalupas Y, Taylor AMKP, Whitelaw JH (1989) Velocity and particle flux characteristics of turbulent particle-laden jets. Proc R Soc Lond A 426:31–78

    Article  Google Scholar 

  • Hetsroni G (1989) Particles–turbulence interaction. Int J Multiphase Flow 15(5):735–746

    Article  Google Scholar 

  • Hill RB, Klewicki JC (1995) Data reduction methods for flow tagging velocity measurements. Exp Fluids 19:142–152

    Google Scholar 

  • Hinze JO (1975) Turbulence, 2nd edn. McGraw-Hill, New York

    Google Scholar 

  • Kim I, Elghobashi S, Sirignano WA (1998) On the equation for spherical-particle motion: effect of Reynolds and acceleration numbers. J Fluid Mech 367:221–253

    Article  MathSciNet  MATH  Google Scholar 

  • Maxey MR, Riley JJ (1983) Equation of motion for a small rigid sphere in a nonuniform flow. Phys Fluids 26(4):883–889

    Article  MATH  Google Scholar 

  • Modarress D, Tan H, Elghobashi S (1983) Two-component LDA measurement in a two-phase turbulent jet. AIAA J 22(5):624–630

    Google Scholar 

  • Parthasarathy RN, Chan YH (2000) Turbulence modification in dilute small-particle-laden liquid jets. AIAA J 39(3):535–537

    Google Scholar 

  • Sadr R (2002) Near field turbulent structure of coaxial particle-laden jets. PhD thesis, University of Utah

  • Sadr R, Klewicki JC (2003a) An experimental investigation of the near field flow development in coaxial jets. Phys Fluids 15(5):1233–1246

    Article  Google Scholar 

  • Sadr R, Klewicki JC (2003b) A multipurpose feed system for fluids and solid particles. Meas Sci Technol 14:N33–N35

    Article  Google Scholar 

  • Sadr R, Klewicki JC (2003c) Spline-based techniques for estimating flow velocities using two-camera multi-line MTV. Exp Fluids 35:257–261

    Article  Google Scholar 

  • Sakakibara J, Wicker RB, Eaton JK (1996) Measurement of the particle–fluid velocity correlation and extra dissipation in a round jet. Int J Multiphase Flow 22(5):863–881

    Article  MATH  Google Scholar 

  • Squires KD, Eaton JK (1990) Particle response and turbulence modification in isotropic turbulence. Phys Fluids A2:1191–1203

    Google Scholar 

  • Wygnanski I, Fiedler H (1969) Some measurements in the self-preserving jet. J Fluid Mech 38(3):577–612

    Article  Google Scholar 

Download references

Acknowledgements

This work was partially supported by the Department of Energy Contract No. DE-AC22-95D(95103). The authors would like to thank Dr. Minami Yoda for her help and support.

Author information

Authors and Affiliations

  1. G. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA

    Reza Sadr

  2. Physical Fluid Dynamics Laboratory Department of Mechanical Engineering, University of Utah, Salt Lake City, UT, 84112, USA

    Joseph C. Klewicki

Authors
  1. Reza Sadr
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Joseph C. Klewicki
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Reza Sadr.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Sadr, R., Klewicki, J.C. Flow field characteristics in the near field region of particle-laden coaxial jets. Exp Fluids 39, 885–894 (2005). https://doi.org/10.1007/s00348-005-0024-6

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00348-005-0024-6

Keywords

Search

Navigation