Child droplets produced by micro-explosion and puffing of two-component droplets

Dmitry V. Antonov, Roman M. Fedorenko, Pavel A. Strizhak

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper provides the results of an experimental study of child droplet distribution by size when a group of factors (heating temperature, parent droplet sizes, component concentration, holder materials) influence the heat exchange between the droplets and the heating environment on three setups with different geometries and characteristics (with heated substrate, hot air flow and muffle furnace). Two types of compositions have been considered: two-component droplets without intermixing and droplets of prepared emulsions with distributed microvolumes of water. The following combustible components were used: Diesel, petroleum oil, gasoline, rapeseed oil, and kerosene. It has been determined that with a heated substrate, the number of child droplets is significantly higher, and the time of heating is significantly shorter than in the schemes with a hot air flow and a muffle furnace. The dimensions of droplets largely depend on the amount of combustible liquids and the type of initial droplet: mixed or immiscible. It has been shown that for each composition there is a critical size of the initial droplet, for which the number of child droplets is at its maximum.

Original languageEnglish
Article number114501
JournalApplied Thermal Engineering
Volume164
DOIs
Publication statusPublished - 5 Jan 2020

Keywords

  • Child droplets
  • Different heating schemes
  • Heterogeneous droplets
  • Micro-explosion
  • Puffing
  • Size distribution

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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