Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces
The wettability of hydrophobic surfaces and the dynamic behaviors of droplets impacting on hydrophobic surfaces are simulated using a lattice Boltzmann method, and the condition for the rebound phenomenon of droplets impacting on solid surfaces is analyzed. The results show that there is a linear re...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Discrete Dynamics in Nature and Society |
| Online Access: | http://dx.doi.org/10.1155/2016/8517309 |
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| author | Qiaogao Huang Ya Zhang Guang Pan |
| author_facet | Qiaogao Huang Ya Zhang Guang Pan |
| author_sort | Qiaogao Huang |
| collection | DOAJ |
| description | The wettability of hydrophobic surfaces and the dynamic behaviors of droplets impacting on hydrophobic surfaces are simulated using a lattice Boltzmann method, and the condition for the rebound phenomenon of droplets impacting on solid surfaces is analyzed. The results show that there is a linear relationship between the intrinsic contact angle and the interaction strength of fluid-wall particles. For hydrophobic surfaces with the same intrinsic contact angle, the micromorphology can increase the surface hydrophobicity, especially the hierarchical micromorphology. The dynamic behaviors of droplets impacting on solid surfaces are affected by the wettability. The surface hydrophobicity is stronger, and the rebound phenomenon occurs easier. If the droplet’s kinetic energy is greater than the sum of the surface energy and the minimum conversion gravitational potential energy when the spreading and shrinking finish, the rebound phenomenon will occur. As the hydrophobic surface’s viscous dissipation is much smaller than the hydrophilic surface’s, the droplet still has high kinetic energy after the spreading and shrinking, which is advantageous to rebound for droplets. |
| format | Article |
| id | doaj-art-5800fe95f306420cbf2d7ae49c65dbfb |
| institution | Kabale University |
| issn | 1026-0226 1607-887X |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Discrete Dynamics in Nature and Society |
| spelling | doaj-art-5800fe95f306420cbf2d7ae49c65dbfb2025-02-03T05:58:13ZengWileyDiscrete Dynamics in Nature and Society1026-02261607-887X2016-01-01201610.1155/2016/85173098517309Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic SurfacesQiaogao Huang0Ya Zhang1Guang Pan2School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, ChinaSchool of Marine Science and Technology, Northwestern Polytechnical University, Xi’an, Shaanxi 710072, ChinaThe wettability of hydrophobic surfaces and the dynamic behaviors of droplets impacting on hydrophobic surfaces are simulated using a lattice Boltzmann method, and the condition for the rebound phenomenon of droplets impacting on solid surfaces is analyzed. The results show that there is a linear relationship between the intrinsic contact angle and the interaction strength of fluid-wall particles. For hydrophobic surfaces with the same intrinsic contact angle, the micromorphology can increase the surface hydrophobicity, especially the hierarchical micromorphology. The dynamic behaviors of droplets impacting on solid surfaces are affected by the wettability. The surface hydrophobicity is stronger, and the rebound phenomenon occurs easier. If the droplet’s kinetic energy is greater than the sum of the surface energy and the minimum conversion gravitational potential energy when the spreading and shrinking finish, the rebound phenomenon will occur. As the hydrophobic surface’s viscous dissipation is much smaller than the hydrophilic surface’s, the droplet still has high kinetic energy after the spreading and shrinking, which is advantageous to rebound for droplets.http://dx.doi.org/10.1155/2016/8517309 |
| spellingShingle | Qiaogao Huang Ya Zhang Guang Pan Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces Discrete Dynamics in Nature and Society |
| title | Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces |
| title_full | Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces |
| title_fullStr | Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces |
| title_full_unstemmed | Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces |
| title_short | Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces |
| title_sort | dynamic behaviors and energy transition mechanism of droplets impacting on hydrophobic surfaces |
| url | http://dx.doi.org/10.1155/2016/8517309 |
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