Abstract
Experimental studies on non-isothermal crystallization on the free surface of a drop of NaCl salt solution have been carried out. The article compares the behavior of the motion of aluminum particle and NaCl crystal on the surface of a drop of an aqueous salt solution. In addition, there is a comparison of the character of the crystal motion at room temperature of 21 °C and at high heat flux when the temperature on the droplet surface is 85 °C. For the first time it is shown that the crystal motion for all these cases is qualitatively and quantitatively different and is determined by the simultaneous influence of several key factors: (1) the surface tension gradient to the left and right of the particle (crystal); (2) the curvature radius and (3) the Marangoni force. Depending on the size of each of these factors, the motion can be directed both to the center of the drop and to its edge (to the contact line). Previously, it was believed that a particle can only move to the center of the drop.
| Original language | English |
|---|---|
| Article number | 109883 |
| Journal | Experimental Thermal and Fluid Science |
| Volume | 109 |
| DOIs | |
| Publication status | Published - 1 Dec 2019 |
| Externally published | Yes |
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Keywords
- Capillary force
- Droplet crystallization
- Droplet evaporation
- Salt solution
ASJC Scopus subject areas
- Chemical Engineering(all)
- Nuclear Energy and Engineering
- Aerospace Engineering
- Mechanical Engineering
- Fluid Flow and Transfer Processes
Cite this
The influence of key factors on the movement of a crystal and a non-crystalline particle on a free droplet surface. / Misyura, S. Y.
In: Experimental Thermal and Fluid Science, Vol. 109, 109883, 01.12.2019.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The influence of key factors on the movement of a crystal and a non-crystalline particle on a free droplet surface
AU - Misyura, S. Y.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Experimental studies on non-isothermal crystallization on the free surface of a drop of NaCl salt solution have been carried out. The article compares the behavior of the motion of aluminum particle and NaCl crystal on the surface of a drop of an aqueous salt solution. In addition, there is a comparison of the character of the crystal motion at room temperature of 21 °C and at high heat flux when the temperature on the droplet surface is 85 °C. For the first time it is shown that the crystal motion for all these cases is qualitatively and quantitatively different and is determined by the simultaneous influence of several key factors: (1) the surface tension gradient to the left and right of the particle (crystal); (2) the curvature radius and (3) the Marangoni force. Depending on the size of each of these factors, the motion can be directed both to the center of the drop and to its edge (to the contact line). Previously, it was believed that a particle can only move to the center of the drop.
AB - Experimental studies on non-isothermal crystallization on the free surface of a drop of NaCl salt solution have been carried out. The article compares the behavior of the motion of aluminum particle and NaCl crystal on the surface of a drop of an aqueous salt solution. In addition, there is a comparison of the character of the crystal motion at room temperature of 21 °C and at high heat flux when the temperature on the droplet surface is 85 °C. For the first time it is shown that the crystal motion for all these cases is qualitatively and quantitatively different and is determined by the simultaneous influence of several key factors: (1) the surface tension gradient to the left and right of the particle (crystal); (2) the curvature radius and (3) the Marangoni force. Depending on the size of each of these factors, the motion can be directed both to the center of the drop and to its edge (to the contact line). Previously, it was believed that a particle can only move to the center of the drop.
KW - Capillary force
KW - Droplet crystallization
KW - Droplet evaporation
KW - Salt solution
UR - http://www.scopus.com/inward/record.url?scp=85069726849&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85069726849&partnerID=8YFLogxK
U2 - 10.1016/j.expthermflusci.2019.109883
DO - 10.1016/j.expthermflusci.2019.109883
M3 - Article
VL - 109
JO - Experimental Thermal and Fluid Science
JF - Experimental Thermal and Fluid Science
SN - 0894-1777
M1 - 109883
ER -