| Autor: |
Jadidbonab H; Department of Mechanical Engineering & Aeronautics, City University of London , 10 Northampton Square, London EC1V 0HB, United Kingdom., Mitroglou N; Department of Mechanical Engineering & Aeronautics, City University of London , 10 Northampton Square, London EC1V 0HB, United Kingdom., Karathanassis I; Department of Mechanical Engineering & Aeronautics, City University of London , 10 Northampton Square, London EC1V 0HB, United Kingdom., Gavaises M; Department of Mechanical Engineering & Aeronautics, City University of London , 10 Northampton Square, London EC1V 0HB, United Kingdom. |
| Jazyk: |
angličtina |
| Zdroj: |
Langmuir : the ACS journal of surfaces and colloids [Langmuir] 2018 Jan 09; Vol. 34 (1), pp. 36-49. Date of Electronic Publication: 2017 Dec 21. |
| DOI: |
10.1021/acs.langmuir.7b01658 |
| Abstrakt: |
The head-to-head impact of diesel-fuel droplets on a polished spherical brass target has been investigated experimentally. High-speed imaging was employed to visualize the impact process for wall surface temperatures and Weber and Reynolds numbers in the ranges of 140-340 °C, 30-850, and 210-1135, respectively. The thermohydrodynamic outcome regimes occurring for the aforementioned ranges of parameters were mapped on a We-T diagram. Seven clearly distinguishable postimpact outcome regimes were identified, which are conventionally called the coating, splash, rebound, breakup-rebound, splash-breakup-coating, breakup-coating, and splash-breakup-rebound regimes. In addition, the effects of the Weber number and surface temperature on the wettability dynamics were examined; the temporal variations of the dynamic contact angle, dimensionless spreading diameter, and liquid film thickness forming on the solid particle were measured and are reported. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
