Droplet impact on superheated micro-structured surfaces

Research output: Contribution to journalArticleAcademicpeer-review

109 Citations (Scopus)

Abstract

When a droplet impacts upon a surface heated above the liquid's boiling point, the droplet either comes into contact with the surface and boils immediately (contact boiling), or is supported by a developing vapor layer and bounces back (film boiling, or Leidenfrost state). We study the transition between these characteristic behaviors and how it is affected by parameters such as impact velocity, surface temperature, and controlled roughness (i.e., micro-structures fabricated on silicon surfaces). In the film boiling regime, we show that the residence time of droplets impacting upon the surface strongly depends on the drop size. We also show that the maximum spreading factor Γ of droplets in this regime displays a universal scaling behavior Γ [similar] We3/10, which can be explained by taking into account the drag force of the vapor flow under the drop. This argument also leads to predictions for the scaling of film thickness and velocity of the vapor shooting out of the gap between the drop and the surface. In the contact boiling regime, we show that the structured surfaces induce the formation of vertical liquid jets during the spreading stage of impacting droplets
Original languageEnglish
Pages (from-to)3272-3282
Number of pages11
JournalSoft matter
Volume9
Issue number12
DOIs
Publication statusPublished - 8 Feb 2013

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boiling
Boiling liquids
film boiling
Contacts (fluid mechanics)
vapors
Vapors
hyaluronate lyase
scaling
drop size
impact velocity
liquids
surface temperature
drag
Boiling point
Silicon
film thickness
roughness
Drag
Film thickness
microstructure

Keywords

  • IR-85513
  • METIS-294231

Cite this

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title = "Droplet impact on superheated micro-structured surfaces",
abstract = "When a droplet impacts upon a surface heated above the liquid's boiling point, the droplet either comes into contact with the surface and boils immediately (contact boiling), or is supported by a developing vapor layer and bounces back (film boiling, or Leidenfrost state). We study the transition between these characteristic behaviors and how it is affected by parameters such as impact velocity, surface temperature, and controlled roughness (i.e., micro-structures fabricated on silicon surfaces). In the film boiling regime, we show that the residence time of droplets impacting upon the surface strongly depends on the drop size. We also show that the maximum spreading factor Γ of droplets in this regime displays a universal scaling behavior Γ [similar] We3/10, which can be explained by taking into account the drag force of the vapor flow under the drop. This argument also leads to predictions for the scaling of film thickness and velocity of the vapor shooting out of the gap between the drop and the surface. In the contact boiling regime, we show that the structured surfaces induce the formation of vertical liquid jets during the spreading stage of impacting droplets",
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author = "Tuan Tran and Erik-Jan Staat and {Susarrey Arce}, A. and T.C. Foertsch and {van Houselt}, Arie and Gardeniers, {Johannes G.E.} and Andrea Prosperetti and Detlef Lohse and Chao Sun",
year = "2013",
month = "2",
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doi = "10.1039/c3sm27643k",
language = "English",
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pages = "3272--3282",
journal = "Soft matter",
issn = "1744-683X",
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Droplet impact on superheated micro-structured surfaces. / Tran, Tuan; Staat, Erik-Jan; Susarrey Arce, A.; Foertsch, T.C.; van Houselt, Arie; Gardeniers, Johannes G.E.; Prosperetti, Andrea; Lohse, Detlef; Sun, Chao.

In: Soft matter, Vol. 9, No. 12, 08.02.2013, p. 3272-3282.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Droplet impact on superheated micro-structured surfaces

AU - Tran, Tuan

AU - Staat, Erik-Jan

AU - Susarrey Arce, A.

AU - Foertsch, T.C.

AU - van Houselt, Arie

AU - Gardeniers, Johannes G.E.

AU - Prosperetti, Andrea

AU - Lohse, Detlef

AU - Sun, Chao

PY - 2013/2/8

Y1 - 2013/2/8

N2 - When a droplet impacts upon a surface heated above the liquid's boiling point, the droplet either comes into contact with the surface and boils immediately (contact boiling), or is supported by a developing vapor layer and bounces back (film boiling, or Leidenfrost state). We study the transition between these characteristic behaviors and how it is affected by parameters such as impact velocity, surface temperature, and controlled roughness (i.e., micro-structures fabricated on silicon surfaces). In the film boiling regime, we show that the residence time of droplets impacting upon the surface strongly depends on the drop size. We also show that the maximum spreading factor Γ of droplets in this regime displays a universal scaling behavior Γ [similar] We3/10, which can be explained by taking into account the drag force of the vapor flow under the drop. This argument also leads to predictions for the scaling of film thickness and velocity of the vapor shooting out of the gap between the drop and the surface. In the contact boiling regime, we show that the structured surfaces induce the formation of vertical liquid jets during the spreading stage of impacting droplets

AB - When a droplet impacts upon a surface heated above the liquid's boiling point, the droplet either comes into contact with the surface and boils immediately (contact boiling), or is supported by a developing vapor layer and bounces back (film boiling, or Leidenfrost state). We study the transition between these characteristic behaviors and how it is affected by parameters such as impact velocity, surface temperature, and controlled roughness (i.e., micro-structures fabricated on silicon surfaces). In the film boiling regime, we show that the residence time of droplets impacting upon the surface strongly depends on the drop size. We also show that the maximum spreading factor Γ of droplets in this regime displays a universal scaling behavior Γ [similar] We3/10, which can be explained by taking into account the drag force of the vapor flow under the drop. This argument also leads to predictions for the scaling of film thickness and velocity of the vapor shooting out of the gap between the drop and the surface. In the contact boiling regime, we show that the structured surfaces induce the formation of vertical liquid jets during the spreading stage of impacting droplets

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DO - 10.1039/c3sm27643k

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SN - 1744-683X

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