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 language | English |
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Pages (from-to) | 937-947 |
Number of pages | 11 |
Journal | Journal of Engineering Physics and Thermophysics |
Volume | 88 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Jul 2015 |
Keywords
- droplets
- entrainment
- high-temperature gases
- phase transformations
- polydisperse dropping liquid flow
- water
ASJC Scopus subject areas
- Condensed Matter Physics
- Engineering(all)