Analysis of the Characteristics of the Retardation and Entrainment of Droplets in a Polydisperse Water Flow by High-Temperature Gases Under Conditions of Intense Phase Transformations

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Abstract

The processes of retardation and subsequent entrainment of droplets of size 50–500 μm of a polydisperse water flow by high-temperature (about 1100 K) gases are investigated by means of the "Particle Image Velocimetry" and "Interferometric Particle Imaging" optical methods, cross-correlation cameras, and pulsed lasers. The initial velocities of motion of water droplets and gases varied within the ranges 0.5–5 m/s and 0.5–2.5 m/s. The limiting relationships between the initial velocities and dimensions of droplets at which the conditions for the entrainment of them by a gas countercurrent flow are implemented established. A dimensionless criterion for prognostic evaluation of the retardation conditions and of the subsequent entrainment of water droplets by high-temperature gases under analyzed conditions is introduced into consideration.

Original languageEnglish
Pages (from-to)937-947
Number of pages11
JournalJournal of Engineering Physics and Thermophysics
Volume88
Issue number4
DOIs
Publication statusPublished - 1 Jul 2015

Fingerprint

water flow
entrainment
high temperature gases
phase transformations
Phase transitions
Gases
Water
particle image velocimetry
gases
Air entrainment
Temperature
cross correlation
water
gas flow
pulsed lasers
Pulsed lasers
cameras
optics
Velocity measurement
Flow of gases

Keywords

  • droplets
  • entrainment
  • high-temperature gases
  • phase transformations
  • polydisperse dropping liquid flow
  • water

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)

Cite this

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abstract = "The processes of retardation and subsequent entrainment of droplets of size 50–500 μm of a polydisperse water flow by high-temperature (about 1100 K) gases are investigated by means of the {"}Particle Image Velocimetry{"} and {"}Interferometric Particle Imaging{"} optical methods, cross-correlation cameras, and pulsed lasers. The initial velocities of motion of water droplets and gases varied within the ranges 0.5–5 m/s and 0.5–2.5 m/s. The limiting relationships between the initial velocities and dimensions of droplets at which the conditions for the entrainment of them by a gas countercurrent flow are implemented established. A dimensionless criterion for prognostic evaluation of the retardation conditions and of the subsequent entrainment of water droplets by high-temperature gases under analyzed conditions is introduced into consideration.",
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author = "Volkov, {R. S.} and Kuznetsov, {G. V.} and Strizhak, {P. A.}",
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AU - Kuznetsov, G. V.

AU - Strizhak, P. A.

PY - 2015/7/1

Y1 - 2015/7/1

N2 - The processes of retardation and subsequent entrainment of droplets of size 50–500 μm of a polydisperse water flow by high-temperature (about 1100 K) gases are investigated by means of the "Particle Image Velocimetry" and "Interferometric Particle Imaging" optical methods, cross-correlation cameras, and pulsed lasers. The initial velocities of motion of water droplets and gases varied within the ranges 0.5–5 m/s and 0.5–2.5 m/s. The limiting relationships between the initial velocities and dimensions of droplets at which the conditions for the entrainment of them by a gas countercurrent flow are implemented established. A dimensionless criterion for prognostic evaluation of the retardation conditions and of the subsequent entrainment of water droplets by high-temperature gases under analyzed conditions is introduced into consideration.

AB - The processes of retardation and subsequent entrainment of droplets of size 50–500 μm of a polydisperse water flow by high-temperature (about 1100 K) gases are investigated by means of the "Particle Image Velocimetry" and "Interferometric Particle Imaging" optical methods, cross-correlation cameras, and pulsed lasers. The initial velocities of motion of water droplets and gases varied within the ranges 0.5–5 m/s and 0.5–2.5 m/s. The limiting relationships between the initial velocities and dimensions of droplets at which the conditions for the entrainment of them by a gas countercurrent flow are implemented established. A dimensionless criterion for prognostic evaluation of the retardation conditions and of the subsequent entrainment of water droplets by high-temperature gases under analyzed conditions is introduced into consideration.

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KW - water

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