Abstract
The processes of heat transfer during the heating, evaporation, and boiling of an inhomogeneous (with a solid inclusion) droplet of a liquid (water) in a high-temperature (800–1500 K) gas medium have been modeled numerically. The inclusion (carbonaceous particle) in the shape of a disk of height and diameter 2 mm has been considered. The volume of the water enveloping the inclusion ranged within 5–20 μL. It has been shown that the ″self-radiation″ of triatomic gases in combustion products (using commercial alcohol as an example) significantly intensifies (compared to the air heated to the same temperatures) the heating of the inhomogeneous liquid droplet. A comparative analysis of the influence of the temperature of the gas medium and of the thickness in the liquid film enveloping the inclusion on the basic characteristic of the process under study, i.e., the time of existence (complete evaporation) of the droplet, has been made. The reliability of the results of theoretical investigations and the legitimacy of the conclusions drawn have been assessed experimentally.
| Original language | English |
|---|---|
| Pages (from-to) | 799-807 |
| Number of pages | 9 |
| Journal | Journal of Engineering Physics and Thermophysics |
| Volume | 89 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jul 2016 |
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Keywords
- droplet
- evaporation
- high-temperature gas medium
- inclusion
- liquid
- radiation
- ″explosive″ vaporization
ASJC Scopus subject areas
- Condensed Matter Physics
- Engineering(all)
Cite this
Influence of the "Self-Radiation" of Combustion Products on the Intensity of Evaporation of an Inhomogeneous Water Droplet in the Flame. / Vysokomornaya, O. V.; Kuznetsov, G. V.; Piskunov, M. V.; Strizhak, P. A.
In: Journal of Engineering Physics and Thermophysics, Vol. 89, No. 4, 01.07.2016, p. 799-807.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of the "Self-Radiation" of Combustion Products on the Intensity of Evaporation of an Inhomogeneous Water Droplet in the Flame
AU - Vysokomornaya, O. V.
AU - Kuznetsov, G. V.
AU - Piskunov, M. V.
AU - Strizhak, P. A.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - The processes of heat transfer during the heating, evaporation, and boiling of an inhomogeneous (with a solid inclusion) droplet of a liquid (water) in a high-temperature (800–1500 K) gas medium have been modeled numerically. The inclusion (carbonaceous particle) in the shape of a disk of height and diameter 2 mm has been considered. The volume of the water enveloping the inclusion ranged within 5–20 μL. It has been shown that the ″self-radiation″ of triatomic gases in combustion products (using commercial alcohol as an example) significantly intensifies (compared to the air heated to the same temperatures) the heating of the inhomogeneous liquid droplet. A comparative analysis of the influence of the temperature of the gas medium and of the thickness in the liquid film enveloping the inclusion on the basic characteristic of the process under study, i.e., the time of existence (complete evaporation) of the droplet, has been made. The reliability of the results of theoretical investigations and the legitimacy of the conclusions drawn have been assessed experimentally.
AB - The processes of heat transfer during the heating, evaporation, and boiling of an inhomogeneous (with a solid inclusion) droplet of a liquid (water) in a high-temperature (800–1500 K) gas medium have been modeled numerically. The inclusion (carbonaceous particle) in the shape of a disk of height and diameter 2 mm has been considered. The volume of the water enveloping the inclusion ranged within 5–20 μL. It has been shown that the ″self-radiation″ of triatomic gases in combustion products (using commercial alcohol as an example) significantly intensifies (compared to the air heated to the same temperatures) the heating of the inhomogeneous liquid droplet. A comparative analysis of the influence of the temperature of the gas medium and of the thickness in the liquid film enveloping the inclusion on the basic characteristic of the process under study, i.e., the time of existence (complete evaporation) of the droplet, has been made. The reliability of the results of theoretical investigations and the legitimacy of the conclusions drawn have been assessed experimentally.
KW - droplet
KW - evaporation
KW - high-temperature gas medium
KW - inclusion
KW - liquid
KW - radiation
KW - ″explosive″ vaporization
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UR - http://www.scopus.com/inward/citedby.url?scp=84982283734&partnerID=8YFLogxK
U2 - 10.1007/s10891-016-1439-z
DO - 10.1007/s10891-016-1439-z
M3 - Article
VL - 89
SP - 799
EP - 807
JO - Journal of Engineering Physics and Thermophysics
JF - Journal of Engineering Physics and Thermophysics
SN - 1062-0125
IS - 4
ER -