THE FEATURES OF HETEROGENEOUS WATER DROPLET EVAPORATION IN HIGH-TEMPERATURE COMBUSTION PRODUCTS OF TYPICAL FLAMMABLE LIQUIDS

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Pavel A. STRIZHAK Maxim V. PISKUNOV Roman S. VOLKOV Alena O. ZHDANOVA

Abstract

This paper presents the experimental results on heating and evaporation features of heterogeneous (with opaque solid particles – the size of 0.05–0.5 mm, relative mass concentration 0–1 %) water droplets (the initial size – radius 1–3 mm) during their motion through high-temperature (500–1800 K) gases. We observed a significant increase in the integral characteristics of evaporation by introducing opaque inclusions into droplets. We established the influence of energy accumulation on the conditions of droplet evaporation at the internal solid / liquid interfaces. For proportioned inclusions, we set the conditions of intensive vaporization (leading to the explosive disintegration of droplets) at internal inclusion / liquid interfaces. To summarize research results, experiments were conducted with the combustion products of kerosene, gasoline, industrial alcohol, acetone, and oil. We used the particles of graphite, carbon, and aluminum as solid inclusions. Also, we compared the integral characteristics of heterogeneous droplet evaporation under the conditions of nonstationary (gas temperature varied from 1800 K to 500 K over the length of channel) and nearly stationary (gas temperature was maintained at about 1100 K) heating.

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How to Cite
STRIZHAK, Pavel A. et al. THE FEATURES OF HETEROGENEOUS WATER DROPLET EVAPORATION IN HIGH-TEMPERATURE COMBUSTION PRODUCTS OF TYPICAL FLAMMABLE LIQUIDS. Thermal Science, [S.l.], mar. 2017. ISSN 2334-7163. Available at: <http://thermal-science.tech/journal/index.php/thsci/article/view/2200>. Date accessed: 14 dec. 2017. doi: https://doi.org/10.2298/TSCI150814008P.
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Articles
Received 2017-03-03
Accepted 2017-03-13
Published 2017-03-13

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