Temperature and convection velocities in two-component liquid droplet until micro-explosion

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The micro-explosion of slurries and emulsions droplets under heating contribute to a significant increase in efficiency of a large group of promising technologies, in particular, in the production of heat carriers based on flue gases, vapors, and water droplets, in flame and thermal water purification from unspecified impurities, and in environmentally friendly combustion of fuels, including those prepared from abundant industrial waste containing sewage and service water. In this paper, we study the consistent patterns of partial fragmentation and micro-explosion of two-liquid droplets consisting of a flammable (oil) and non-flammable (water) liquids. The consequences of rapid convective heat exchange have been researched between a droplet and heated air flow. The Planar Laser Induced Fluorescence optical technique was used to measure the droplet temperature field, and the Micro Particle Image Velocimetry – the convection velocities in the droplet. We focus on the structure of convective flows, centers of vortex formation, velocities, and the influence on the temperature in different droplet sections (especially, at the inter-component interface, whose destruction triggers the micro-explosive breakup of droplets). The tracer particles were used to simultaneously measure the convection velocities in the flammable and non-flammable liquids making up two droplet parts. We have determined the velocities and temperatures near the inter-component interface sufficient for micro-explosion of a rapidly heated two-liquid droplet. The experimental findings provide a deeper insight into the mechanism and main stages of inter-component interface destruction in heated heterogeneous droplets.

Original languageEnglish
Article number109862
JournalExperimental Thermal and Fluid Science
Volume109
DOIs
Publication statusPublished - 1 Dec 2019

Fingerprint

Explosions
Liquids
Temperature
Water
Convection
Industrial Waste
Industrial wastes
Steam
Slurries
Sewage
Emulsions
Flue gases
Velocity measurement
Purification
Oils
Temperature distribution
Vortex flow
Fluorescence
Vapors
Impurities

Keywords

  • Convection
  • Micro particle image velocimetry
  • Micro-explosion
  • Planar laser induced fluorescence
  • Temperature fields
  • Two-component liquid droplet

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Cite this

@article{3aeafb167528457bb8485f92256ac674,
title = "Temperature and convection velocities in two-component liquid droplet until micro-explosion",
abstract = "The micro-explosion of slurries and emulsions droplets under heating contribute to a significant increase in efficiency of a large group of promising technologies, in particular, in the production of heat carriers based on flue gases, vapors, and water droplets, in flame and thermal water purification from unspecified impurities, and in environmentally friendly combustion of fuels, including those prepared from abundant industrial waste containing sewage and service water. In this paper, we study the consistent patterns of partial fragmentation and micro-explosion of two-liquid droplets consisting of a flammable (oil) and non-flammable (water) liquids. The consequences of rapid convective heat exchange have been researched between a droplet and heated air flow. The Planar Laser Induced Fluorescence optical technique was used to measure the droplet temperature field, and the Micro Particle Image Velocimetry – the convection velocities in the droplet. We focus on the structure of convective flows, centers of vortex formation, velocities, and the influence on the temperature in different droplet sections (especially, at the inter-component interface, whose destruction triggers the micro-explosive breakup of droplets). The tracer particles were used to simultaneously measure the convection velocities in the flammable and non-flammable liquids making up two droplet parts. We have determined the velocities and temperatures near the inter-component interface sufficient for micro-explosion of a rapidly heated two-liquid droplet. The experimental findings provide a deeper insight into the mechanism and main stages of inter-component interface destruction in heated heterogeneous droplets.",
keywords = "Convection, Micro particle image velocimetry, Micro-explosion, Planar laser induced fluorescence, Temperature fields, Two-component liquid droplet",
author = "Antonov, {D. V.} and Kuznetsov, {G. V.} and Misyura, {S. Ya} and Strizhak, {P. A.}",
year = "2019",
month = "12",
day = "1",
doi = "10.1016/j.expthermflusci.2019.109862",
language = "English",
volume = "109",
journal = "Experimental Thermal and Fluid Science",
issn = "0894-1777",
publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Temperature and convection velocities in two-component liquid droplet until micro-explosion

AU - Antonov, D. V.

AU - Kuznetsov, G. V.

AU - Misyura, S. Ya

AU - Strizhak, P. A.

PY - 2019/12/1

Y1 - 2019/12/1

N2 - The micro-explosion of slurries and emulsions droplets under heating contribute to a significant increase in efficiency of a large group of promising technologies, in particular, in the production of heat carriers based on flue gases, vapors, and water droplets, in flame and thermal water purification from unspecified impurities, and in environmentally friendly combustion of fuels, including those prepared from abundant industrial waste containing sewage and service water. In this paper, we study the consistent patterns of partial fragmentation and micro-explosion of two-liquid droplets consisting of a flammable (oil) and non-flammable (water) liquids. The consequences of rapid convective heat exchange have been researched between a droplet and heated air flow. The Planar Laser Induced Fluorescence optical technique was used to measure the droplet temperature field, and the Micro Particle Image Velocimetry – the convection velocities in the droplet. We focus on the structure of convective flows, centers of vortex formation, velocities, and the influence on the temperature in different droplet sections (especially, at the inter-component interface, whose destruction triggers the micro-explosive breakup of droplets). The tracer particles were used to simultaneously measure the convection velocities in the flammable and non-flammable liquids making up two droplet parts. We have determined the velocities and temperatures near the inter-component interface sufficient for micro-explosion of a rapidly heated two-liquid droplet. The experimental findings provide a deeper insight into the mechanism and main stages of inter-component interface destruction in heated heterogeneous droplets.

AB - The micro-explosion of slurries and emulsions droplets under heating contribute to a significant increase in efficiency of a large group of promising technologies, in particular, in the production of heat carriers based on flue gases, vapors, and water droplets, in flame and thermal water purification from unspecified impurities, and in environmentally friendly combustion of fuels, including those prepared from abundant industrial waste containing sewage and service water. In this paper, we study the consistent patterns of partial fragmentation and micro-explosion of two-liquid droplets consisting of a flammable (oil) and non-flammable (water) liquids. The consequences of rapid convective heat exchange have been researched between a droplet and heated air flow. The Planar Laser Induced Fluorescence optical technique was used to measure the droplet temperature field, and the Micro Particle Image Velocimetry – the convection velocities in the droplet. We focus on the structure of convective flows, centers of vortex formation, velocities, and the influence on the temperature in different droplet sections (especially, at the inter-component interface, whose destruction triggers the micro-explosive breakup of droplets). The tracer particles were used to simultaneously measure the convection velocities in the flammable and non-flammable liquids making up two droplet parts. We have determined the velocities and temperatures near the inter-component interface sufficient for micro-explosion of a rapidly heated two-liquid droplet. The experimental findings provide a deeper insight into the mechanism and main stages of inter-component interface destruction in heated heterogeneous droplets.

KW - Convection

KW - Micro particle image velocimetry

KW - Micro-explosion

KW - Planar laser induced fluorescence

KW - Temperature fields

KW - Two-component liquid droplet

UR - http://www.scopus.com/inward/record.url?scp=85068208161&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068208161&partnerID=8YFLogxK

U2 - 10.1016/j.expthermflusci.2019.109862

DO - 10.1016/j.expthermflusci.2019.109862

M3 - Article

VL - 109

JO - Experimental Thermal and Fluid Science

JF - Experimental Thermal and Fluid Science

SN - 0894-1777

M1 - 109862

ER -