Interaction of Water Droplets in Air Flow at Different Degrees of Flow Turbulence

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Presented are results of experiments on high-speed video recording of collisions of water droplets in a gas medium as part of aerosol. Parameters of the gas (air) flow and aerosol cloud were monitored using cross-correlation complexes and optical methods of Particle Image Velocimetry, Particle Tracking Velocimetry, Interferometric Particle Imagine, and Shadow Photography. Conditions at different degrees of gas flow turbulence were considered. The characteristic Reynolds numbers ranged from 1100 to 2800. The relative probabilities of coagulation, scattering, and fragmentation of water droplets upon their collisions were calculated. Experimental dependences of probabilistic criteria on parameters of droplets and flow have been obtained for subsequent mathematical modeling. It has been shown that fragmentation and complete breakup of droplets can enable several-fold increase in the relative area of the liquid. The effect of the degree of gas flow turbulence on parameters of recorded processes of interaction of droplets has been established. The results of the experiments were subjected to criterion processing, theWeber and Reynolds numbers taken into account.

Original languageEnglish
JournalJournal of Engineering Thermophysics
Volume28
Issue number1
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

air flow
Droplet
Turbulence
turbulence
Aerosol
Gas Flow
Fragmentation
Water
gas flow
Reynolds number
aerosols
fragmentation
Collision
Air
Interaction
water
Characteristic numbers
Particle Tracking
collisions
Coagulation

ASJC Scopus subject areas

  • Environmental Engineering
  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

Interaction of Water Droplets in Air Flow at Different Degrees of Flow Turbulence. / Vysokomornaya, O. V.; Shlegel’, N. E.; Strizhak, P. A.

In: Journal of Engineering Thermophysics, Vol. 28, No. 1, 01.01.2019.

Research output: Contribution to journalArticle

@article{59daff6ab50147c8ab11be46f2f75c67,
title = "Interaction of Water Droplets in Air Flow at Different Degrees of Flow Turbulence",
abstract = "Presented are results of experiments on high-speed video recording of collisions of water droplets in a gas medium as part of aerosol. Parameters of the gas (air) flow and aerosol cloud were monitored using cross-correlation complexes and optical methods of Particle Image Velocimetry, Particle Tracking Velocimetry, Interferometric Particle Imagine, and Shadow Photography. Conditions at different degrees of gas flow turbulence were considered. The characteristic Reynolds numbers ranged from 1100 to 2800. The relative probabilities of coagulation, scattering, and fragmentation of water droplets upon their collisions were calculated. Experimental dependences of probabilistic criteria on parameters of droplets and flow have been obtained for subsequent mathematical modeling. It has been shown that fragmentation and complete breakup of droplets can enable several-fold increase in the relative area of the liquid. The effect of the degree of gas flow turbulence on parameters of recorded processes of interaction of droplets has been established. The results of the experiments were subjected to criterion processing, theWeber and Reynolds numbers taken into account.",
author = "Vysokomornaya, {O. V.} and Shlegel’, {N. E.} and Strizhak, {P. A.}",
year = "2019",
month = "1",
day = "1",
doi = "10.1134/S1810232819010016",
language = "English",
volume = "28",
journal = "Journal of Engineering Thermophysics",
issn = "1810-2328",
publisher = "Maik Nauka-Interperiodica Publishing",
number = "1",

}

TY - JOUR

T1 - Interaction of Water Droplets in Air Flow at Different Degrees of Flow Turbulence

AU - Vysokomornaya, O. V.

AU - Shlegel’, N. E.

AU - Strizhak, P. A.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Presented are results of experiments on high-speed video recording of collisions of water droplets in a gas medium as part of aerosol. Parameters of the gas (air) flow and aerosol cloud were monitored using cross-correlation complexes and optical methods of Particle Image Velocimetry, Particle Tracking Velocimetry, Interferometric Particle Imagine, and Shadow Photography. Conditions at different degrees of gas flow turbulence were considered. The characteristic Reynolds numbers ranged from 1100 to 2800. The relative probabilities of coagulation, scattering, and fragmentation of water droplets upon their collisions were calculated. Experimental dependences of probabilistic criteria on parameters of droplets and flow have been obtained for subsequent mathematical modeling. It has been shown that fragmentation and complete breakup of droplets can enable several-fold increase in the relative area of the liquid. The effect of the degree of gas flow turbulence on parameters of recorded processes of interaction of droplets has been established. The results of the experiments were subjected to criterion processing, theWeber and Reynolds numbers taken into account.

AB - Presented are results of experiments on high-speed video recording of collisions of water droplets in a gas medium as part of aerosol. Parameters of the gas (air) flow and aerosol cloud were monitored using cross-correlation complexes and optical methods of Particle Image Velocimetry, Particle Tracking Velocimetry, Interferometric Particle Imagine, and Shadow Photography. Conditions at different degrees of gas flow turbulence were considered. The characteristic Reynolds numbers ranged from 1100 to 2800. The relative probabilities of coagulation, scattering, and fragmentation of water droplets upon their collisions were calculated. Experimental dependences of probabilistic criteria on parameters of droplets and flow have been obtained for subsequent mathematical modeling. It has been shown that fragmentation and complete breakup of droplets can enable several-fold increase in the relative area of the liquid. The effect of the degree of gas flow turbulence on parameters of recorded processes of interaction of droplets has been established. The results of the experiments were subjected to criterion processing, theWeber and Reynolds numbers taken into account.

UR - http://www.scopus.com/inward/record.url?scp=85064900303&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064900303&partnerID=8YFLogxK

U2 - 10.1134/S1810232819010016

DO - 10.1134/S1810232819010016

M3 - Article

VL - 28

JO - Journal of Engineering Thermophysics

JF - Journal of Engineering Thermophysics

SN - 1810-2328

IS - 1

ER -