The using of the high-speed (not less than 10 5 frames per second) video recording tools (Phantom) and the software package (TEMA Automotive) allowed carrying out an experimental research of laws of intensive vaporization with an explosive disintegration of heterogeneous (with a single solid non-transparent inclusion) liquid droplet (by the example of water) in high-temperature (500-800 K) gases (combustion products). Times of the processes under consideration and stages (liquid heat-up, evaporation from an external surface, bubble boiling at internal interfaces, growth of bubble sizes, explosive droplet breakup) were established. Necessary conditions of an explosive vaporization of a heterogeneous droplet were found out. Mechanisms of this process and an influence of properties of liquid and inclusion material on them were determined.
Abstract. This paper provides an overview on the type and concentration of the major contaminants in industrial and domestic wastewater. The present study was conducted to analyze and collect data on hazardous substances in wastewater from petrochemical plants, pulp and paper mills, electroplating industries, power plants, and municipal sources (households and small industries).
This paper examines the features of the heating and evaporation of heterogeneous liquid (water) droplets (with the initial radius from 1.5 to 2.5 mm) in the combustion products of typical liquid combustible substances (acetone, technical ethanol, butane-propane gas mixture) and heated air explored as a part of university research work. The investigations have been performed by means of high-speed video recording and software "TEMA Automotive" and "Phantom Camera Control". The gas temperature varied from 300 to 850 K in the experiments. The characteristic times of droplet existence (complete evaporation) have been determined. The influence of radiative, convective and conductive heat transfer has been defined
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