Weickgenannt, C. M. ; Zhang, Y. ; Sinha-Ray, S. ; Roisman, Ilia V. ; Gambaryan-Roisman, Tatiana ; Tropea, Cameron ; Yarin, A. L. (2011)
Inverse-Leidenfrost phenomenon on nanofiber mats on hot surfaces.
In: Physical Review E, 84 (3)
doi: 10.1103/PhysRevE.84.036310
Article, Bibliographie
Abstract
The Leidenfrost effect is a technically and industrially important phenomenon that severely restricts heat removal from high-heat-flux surfaces. A simple remedy to the Leidenfrost effect is provided by polymer nanofiber mats created and deposited by electrospinning on stainless steel surfaces. The influence of nanofiber mats on hydrodynamics and cooling efficiency of single drop impact onto hot surfaces has been investigated experimentally. The evolution of the drops has been recorded by a high-speed complimentary metal-oxide semiconductor camera, whereas the cooling temperature was measured by a thermocouple. A remarkable phenomenon was discovered: a mat of polymer nanofibers electrospun onto a heater surface can completely suppress the Leidenfrost effect, thereby increasing the rate of heat removal from the surface to the liquid drops significantly. The “inverse-Leidenfrost” effect is described qualitatively and quantitatively, providing clear physical reasons for the observed behavior.
| Item Type: | Article |
|---|---|
| Erschienen: | 2011 |
| Creators: | Weickgenannt, C. M. ; Zhang, Y. ; Sinha-Ray, S. ; Roisman, Ilia V. ; Gambaryan-Roisman, Tatiana ; Tropea, Cameron ; Yarin, A. L. |
| Type of entry: | Bibliographie |
| Title: | Inverse-Leidenfrost phenomenon on nanofiber mats on hot surfaces |
| Language: | English |
| Date: | September 2011 |
| Publisher: | American Physical Society |
| Journal or Publication Title: | Physical Review E |
| Volume of the journal: | 84 |
| Issue Number: | 3 |
| DOI: | 10.1103/PhysRevE.84.036310 |
| URL / URN: | http://dx.doi.org/10.1103/PhysRevE.84.036310 |
| Corresponding Links: | |
| Abstract: | The Leidenfrost effect is a technically and industrially important phenomenon that severely restricts heat removal from high-heat-flux surfaces. A simple remedy to the Leidenfrost effect is provided by polymer nanofiber mats created and deposited by electrospinning on stainless steel surfaces. The influence of nanofiber mats on hydrodynamics and cooling efficiency of single drop impact onto hot surfaces has been investigated experimentally. The evolution of the drops has been recorded by a high-speed complimentary metal-oxide semiconductor camera, whereas the cooling temperature was measured by a thermocouple. A remarkable phenomenon was discovered: a mat of polymer nanofibers electrospun onto a heater surface can completely suppress the Leidenfrost effect, thereby increasing the rate of heat removal from the surface to the liquid drops significantly. The “inverse-Leidenfrost” effect is described qualitatively and quantitatively, providing clear physical reasons for the observed behavior. |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD) Exzellenzinitiative Exzellenzinitiative > Clusters of Excellence Zentrale Einrichtungen Exzellenzinitiative > Clusters of Excellence > Center of Smart Interfaces (CSI) |
| Date Deposited: | 28 Aug 2017 16:28 |
| Last Modified: | 08 Aug 2019 13:20 |
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