Abstract
In this paper, we describe the results of experimental research into secondary droplet atomization for several heterogeneous, water-oily liquid compositions including some highly heterogeneous emulsions and slurries. The group of schemes is studied, in addition to relevant experiments reported in the literature: droplets colliding with each other, with a heated or not heated walls, and with an air flow, as well as exposed to conductive or convective heating followed by micro-explosive breakup. After the analysis of experimental data, we calculate the size and number distributions of the liquid fragments generated using each of the approaches. We determine the duration of initial droplets' fragmentation as a function of the We numbers and the density of the supplied heat flux. The comparative analysis gave us optimal conditions for several aerosol generation techniques providing minimal fragment size with relatively low electric power consumption. It is shown that each of used atomization techniques provides a comparable number of liquid fragments on average, considering the amount of power required. Several techniques for combined atomization are proposed, based on the investigated approaches.
| Original language | English |
|---|---|
| Article number | 104329 |
| Journal | International Communications in Heat and Mass Transfer |
| Volume | 108 |
| DOIs | |
| Publication status | Published - 1 Nov 2019 |
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Keywords
- Child-droplets
- Fragmentation
- Interaction between droplets
- Micro-explosion
- Secondary atomization
- Wall and air jet impact
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Chemical Engineering(all)
- Condensed Matter Physics
Cite this
Comparing the integral characteristics of secondary droplet atomization under different situations. / Shlegel, Nikita; Strizhak, Pavel; Tarlet, Dominique; Bellettre, Jérôme.
In: International Communications in Heat and Mass Transfer, Vol. 108, 104329, 01.11.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Comparing the integral characteristics of secondary droplet atomization under different situations
AU - Shlegel, Nikita
AU - Strizhak, Pavel
AU - Tarlet, Dominique
AU - Bellettre, Jérôme
PY - 2019/11/1
Y1 - 2019/11/1
N2 - In this paper, we describe the results of experimental research into secondary droplet atomization for several heterogeneous, water-oily liquid compositions including some highly heterogeneous emulsions and slurries. The group of schemes is studied, in addition to relevant experiments reported in the literature: droplets colliding with each other, with a heated or not heated walls, and with an air flow, as well as exposed to conductive or convective heating followed by micro-explosive breakup. After the analysis of experimental data, we calculate the size and number distributions of the liquid fragments generated using each of the approaches. We determine the duration of initial droplets' fragmentation as a function of the We numbers and the density of the supplied heat flux. The comparative analysis gave us optimal conditions for several aerosol generation techniques providing minimal fragment size with relatively low electric power consumption. It is shown that each of used atomization techniques provides a comparable number of liquid fragments on average, considering the amount of power required. Several techniques for combined atomization are proposed, based on the investigated approaches.
AB - In this paper, we describe the results of experimental research into secondary droplet atomization for several heterogeneous, water-oily liquid compositions including some highly heterogeneous emulsions and slurries. The group of schemes is studied, in addition to relevant experiments reported in the literature: droplets colliding with each other, with a heated or not heated walls, and with an air flow, as well as exposed to conductive or convective heating followed by micro-explosive breakup. After the analysis of experimental data, we calculate the size and number distributions of the liquid fragments generated using each of the approaches. We determine the duration of initial droplets' fragmentation as a function of the We numbers and the density of the supplied heat flux. The comparative analysis gave us optimal conditions for several aerosol generation techniques providing minimal fragment size with relatively low electric power consumption. It is shown that each of used atomization techniques provides a comparable number of liquid fragments on average, considering the amount of power required. Several techniques for combined atomization are proposed, based on the investigated approaches.
KW - Child-droplets
KW - Fragmentation
KW - Interaction between droplets
KW - Micro-explosion
KW - Secondary atomization
KW - Wall and air jet impact
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UR - http://www.scopus.com/inward/citedby.url?scp=85072021436&partnerID=8YFLogxK
U2 - 10.1016/j.icheatmasstransfer.2019.104329
DO - 10.1016/j.icheatmasstransfer.2019.104329
M3 - Article
VL - 108
JO - International Communications in Heat and Mass Transfer
JF - International Communications in Heat and Mass Transfer
SN - 0735-1933
M1 - 104329
ER -