Abstract
This paper presents an experimental study of rupture of a subcooled water film falling down an 1 m long heated copper plate with longitudinal grooves of 0.5×0.15 mm2 cross sectional area and 2 mm spacing. It was found that the threshold heat flux at which an initial stable dry patch forms on the grooved surface is about two times higher than that on a smooth surface. Furthermore, the grooves prevent dry patches from spreading over the total heated surface thus essentially delaying the onset of the heat transfer crisis. The main governing parameters of the experiment and their respective values are: initial film temperature (20-95°C), heat flux (0-1.26 W/cm2) and volumetric flow rate (11.1-38.2 l/h) (Re=56.2-653.2).
| Original language | English |
|---|---|
| Pages (from-to) | 71-74 |
| Number of pages | 4 |
| Journal | Microgravity Science and Technology |
| Volume | 19 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 1 Jan 2007 |
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ASJC Scopus subject areas
- Modelling and Simulation
- Engineering(all)
- Physics and Astronomy(all)
- Applied Mathematics
Cite this
Rupture of a subcooled liquid film falling down a heated grooved surface. / Zaitsev, D. V.; Aviles, M. Lozano; Auracher, H.; Kabov, O. A.
In: Microgravity Science and Technology, Vol. 19, No. 3-4, 01.01.2007, p. 71-74.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Rupture of a subcooled liquid film falling down a heated grooved surface
AU - Zaitsev, D. V.
AU - Aviles, M. Lozano
AU - Auracher, H.
AU - Kabov, O. A.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - This paper presents an experimental study of rupture of a subcooled water film falling down an 1 m long heated copper plate with longitudinal grooves of 0.5×0.15 mm2 cross sectional area and 2 mm spacing. It was found that the threshold heat flux at which an initial stable dry patch forms on the grooved surface is about two times higher than that on a smooth surface. Furthermore, the grooves prevent dry patches from spreading over the total heated surface thus essentially delaying the onset of the heat transfer crisis. The main governing parameters of the experiment and their respective values are: initial film temperature (20-95°C), heat flux (0-1.26 W/cm2) and volumetric flow rate (11.1-38.2 l/h) (Re=56.2-653.2).
AB - This paper presents an experimental study of rupture of a subcooled water film falling down an 1 m long heated copper plate with longitudinal grooves of 0.5×0.15 mm2 cross sectional area and 2 mm spacing. It was found that the threshold heat flux at which an initial stable dry patch forms on the grooved surface is about two times higher than that on a smooth surface. Furthermore, the grooves prevent dry patches from spreading over the total heated surface thus essentially delaying the onset of the heat transfer crisis. The main governing parameters of the experiment and their respective values are: initial film temperature (20-95°C), heat flux (0-1.26 W/cm2) and volumetric flow rate (11.1-38.2 l/h) (Re=56.2-653.2).
UR - http://www.scopus.com/inward/record.url?scp=36549013621&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=36549013621&partnerID=8YFLogxK
U2 - 10.1007/BF02915756
DO - 10.1007/BF02915756
M3 - Article
VL - 19
SP - 71
EP - 74
JO - Microgravity Science and Technology
JF - Microgravity Science and Technology
SN - 0938-0108
IS - 3-4
ER -