Leidenfrost point reduction on micro-patterned metallic surface

Research output: Contribution to journalArticleAcademicpeer-review

52 Citations (Scopus)

Abstract

Droplets are able to levitate when deposited over a hot surface exceeding a critical temperature. This is known as the Leidenfrost effect. This phenomenon occurs when the surface is heated above the so-called Leidenfrost point (LFP), above which the vapor film between the droplet and hot surface is able to levitate the droplet. Such a critical temperature depends on several factors. One of the most studied parameters has been the surface roughness. Almost all of the experimental studies in the literature have concluded that the LFP increases with the roughness. According to these results, it seems that the roughness is detrimental for the stability of the vapor film. In contrast with these results, we present here a micropatterned surface that significantly reduces the LFP. The temperature increase, relative to the boiling point, required to reach the LFP is 70% lower than that on the flat surface. The reasons for such an effect are qualitatively and quantitatively discussed with a simple semiempirical model. This result can be relevant to save energy in applications that take advantage of the Leidenfrost effect for drop control or drag reduction.
Original languageEnglish
Pages (from-to)15106-15110
JournalLangmuir
Volume28
Issue number42
DOIs
Publication statusPublished - 2012

Fingerprint

hot surfaces
critical temperature
roughness
vapors
Surface roughness
drag reduction
boiling
Vapors
flat surfaces
surface roughness
Drag reduction
Boiling point
Temperature
temperature
energy

Keywords

  • METIS-288461
  • IR-81840

Cite this

@article{4b9e18cca8bb40448f9bf85a399119bc,
title = "Leidenfrost point reduction on micro-patterned metallic surface",
abstract = "Droplets are able to levitate when deposited over a hot surface exceeding a critical temperature. This is known as the Leidenfrost effect. This phenomenon occurs when the surface is heated above the so-called Leidenfrost point (LFP), above which the vapor film between the droplet and hot surface is able to levitate the droplet. Such a critical temperature depends on several factors. One of the most studied parameters has been the surface roughness. Almost all of the experimental studies in the literature have concluded that the LFP increases with the roughness. According to these results, it seems that the roughness is detrimental for the stability of the vapor film. In contrast with these results, we present here a micropatterned surface that significantly reduces the LFP. The temperature increase, relative to the boiling point, required to reach the LFP is 70{\%} lower than that on the flat surface. The reasons for such an effect are qualitatively and quantitatively discussed with a simple semiempirical model. This result can be relevant to save energy in applications that take advantage of the Leidenfrost effect for drop control or drag reduction.",
keywords = "METIS-288461, IR-81840",
author = "{Arnaldo del Cerro}, D. and {Gomez Marin}, Alvaro and R{\"o}mer, {Gerardus Richardus, Bernardus, Engelina} and B. Pathiraj and Detlef Lohse and {Huis in 't Veld}, Bert",
year = "2012",
doi = "10.1021/la302181f",
language = "English",
volume = "28",
pages = "15106--15110",
journal = "Langmuir",
issn = "0743-7463",
publisher = "American Chemical Society",
number = "42",

}

Leidenfrost point reduction on micro-patterned metallic surface. / Arnaldo del Cerro, D.; Gomez Marin, Alvaro; Römer, Gerardus Richardus, Bernardus, Engelina; Pathiraj, B.; Lohse, Detlef; Huis in 't Veld, Bert.

In: Langmuir, Vol. 28, No. 42, 2012, p. 15106-15110.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Leidenfrost point reduction on micro-patterned metallic surface

AU - Arnaldo del Cerro, D.

AU - Gomez Marin, Alvaro

AU - Römer, Gerardus Richardus, Bernardus, Engelina

AU - Pathiraj, B.

AU - Lohse, Detlef

AU - Huis in 't Veld, Bert

PY - 2012

Y1 - 2012

N2 - Droplets are able to levitate when deposited over a hot surface exceeding a critical temperature. This is known as the Leidenfrost effect. This phenomenon occurs when the surface is heated above the so-called Leidenfrost point (LFP), above which the vapor film between the droplet and hot surface is able to levitate the droplet. Such a critical temperature depends on several factors. One of the most studied parameters has been the surface roughness. Almost all of the experimental studies in the literature have concluded that the LFP increases with the roughness. According to these results, it seems that the roughness is detrimental for the stability of the vapor film. In contrast with these results, we present here a micropatterned surface that significantly reduces the LFP. The temperature increase, relative to the boiling point, required to reach the LFP is 70% lower than that on the flat surface. The reasons for such an effect are qualitatively and quantitatively discussed with a simple semiempirical model. This result can be relevant to save energy in applications that take advantage of the Leidenfrost effect for drop control or drag reduction.

AB - Droplets are able to levitate when deposited over a hot surface exceeding a critical temperature. This is known as the Leidenfrost effect. This phenomenon occurs when the surface is heated above the so-called Leidenfrost point (LFP), above which the vapor film between the droplet and hot surface is able to levitate the droplet. Such a critical temperature depends on several factors. One of the most studied parameters has been the surface roughness. Almost all of the experimental studies in the literature have concluded that the LFP increases with the roughness. According to these results, it seems that the roughness is detrimental for the stability of the vapor film. In contrast with these results, we present here a micropatterned surface that significantly reduces the LFP. The temperature increase, relative to the boiling point, required to reach the LFP is 70% lower than that on the flat surface. The reasons for such an effect are qualitatively and quantitatively discussed with a simple semiempirical model. This result can be relevant to save energy in applications that take advantage of the Leidenfrost effect for drop control or drag reduction.

KW - METIS-288461

KW - IR-81840

U2 - 10.1021/la302181f

DO - 10.1021/la302181f

M3 - Article

VL - 28

SP - 15106

EP - 15110

JO - Langmuir

JF - Langmuir

SN - 0743-7463

IS - 42

ER -