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

Reza Sadr, Joseph C. Klewicki

Research output: Contribution to journalArticle

8 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)885-894
Number of pages10
JournalExperiments in Fluids
Volume39
Issue number5
DOIs
Publication statusPublished - Nov 2005
Externally publishedYes

Fingerprint

Flow fields
near fields
flow distribution
hydraulic jets
density (mass/volume)
Water
Flow structure
beads
Density (specific gravity)
Velocity measurement
marking
Reynolds number
velocity distribution
gravitation
Glass
gradients
Fluids
augmentation
glass
fluids

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Fluid Flow and Transfer Processes

Cite this

Flow field characteristics in the near field region of particle-laden coaxial jets. / Sadr, Reza; Klewicki, Joseph C.

In: Experiments in Fluids, Vol. 39, No. 5, 11.2005, p. 885-894.

Research output: Contribution to journalArticle

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