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

被引：4

作者：

Volkov R.S. ^{[1
]}

Kuznetsov G.V. ^{[1
]}

Strizhak P.A. ^{[1
]}

机构：

[1] National Research Tomsk Polytechnic University, Power Engineering Institute, 30 Lenin Ave., Tomsk

来源：

Journal of Engineering Physics and Thermophysics | 2015年 / 88卷 / 04期

关键词：

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

D O I：

10.1007/s10891-015-1268-5

中图分类号：

学科分类号：

摘要：

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. © 2015, Springer Science+Business Media New York.

引用

页码：937 / 947

页数：10

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