Boiling up of jets of superheated ethanol-water solutions

被引：0
|
作者：
Reshetnikov A.V. [1 ]
Vinogradov A.V. [1 ]
Begletsov V.N. [1 ]
Skokov V.N. [1 ]
Koverda V.P. [1 ]
机构：
[1] Institute of Thermophysics, Ural Division, Russian Academy of Sciences, Yekaterinburg 620016
来源：
Journal of Engineering Thermophysics | 2007年 / 16卷 / 4期
基金：
俄罗斯基础研究基金会;
关键词：
Power Spectrum; Vapor Bubble; Organic Liquid; Superheated Liquid; Engineering THERMOPHYSICS;
D O I：
10.1134/S1810232807040054
中图分类号：
学科分类号：
摘要：
The stability and evolution of the shapes of jets of strongly superheated aqueous solutions of ethanol flowing out of a high-pressure chamber are experimentally investigated at various initial parameters. It has been found that a low-boiling liquid causes shifting to lower temperatures of the boundaries between various kinds of boiling-up jets, such as cylindrical, conical, and open. Large-scale pulsations of the jet shapes are observed in the temperature range from 454 to 484 K, where the jet completely breaks down. The conditions for the formation of large-scale low-frequency pulsations with a power spectrum diverging inversely proportional to the frequency f (1/f spectra) have been revealed. Such fluctuations prove that the flow is unstable and large-scale low-frequency ejections are possible. © Pleiades Publishing, Ltd. 2007.
引用
收藏
页码：244 / 248
页数：4
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