Transient dynamics in drop impact on a superheated surface
SCIE
SCOPUS
- Title
- Transient dynamics in drop impact on a superheated surface
- Authors
- LEESANGHYEON; Lee, Sang Jun; Lee, Ji San; Fezzaa, Kamel; Je, Jung Ho
- Date Issued
- 2018-12
- Publisher
- AMER PHYSICAL SOC
- Abstract
- When a drop impinges on a superheated surface, a Leidenfrost vapor layer forms between the drop and the surface. Transient dynamics of the layer can play a critical role for cooling in power plants but is not fully understood. Here we successfully visualize transient dynamics of the layer using ultrafast x-ray imaging. We reveal that a vapor disk with a homogeneous thickness, developed during drop impact, grows in thickness following the Fourier law. At a certain thickness (12 +/- 2 mu m in this study) of the vapor disk, ripples generate at its periphery due to capillary waves, resulting in significant enhancement of drop vaporization.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/95459
- DOI
- 10.1103/PhysRevFluids.3.124308
- ISSN
- 2469-990X
- Article Type
- Article
- Citation
- PHYSICAL REVIEW FLUIDS, vol. 3, no. 12, 2018-12
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- There are no files associated with this item.
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