Details
| Original language | English |
|---|---|
| Pages (from-to) | 3696-3699 |
| Number of pages | 4 |
| Journal | International Journal of Heat and Mass Transfer |
| Volume | 51 |
| Issue number | 13-14 |
| Early online date | 14 May 2008 |
| Publication status | Published - 1 Jul 2008 |
Abstract
Evaporation of sessile drops with constant wetting radius is investigated. In contrast to constant contact angle the temporal evaluation of the droplet volume can not be formulated in a closed form. We provide two approximations for initial contact angles below 90° which allow predicting the evaporation dynamics in practice easily. The derived linear approximation is suitable for small initial contact angles with a maximum relative deviation of 1% for contact angles below 30°. Further, we provide a non-linear algebraic approximation with a maximum relative error 0.3% in the entire range of contact angle considered.
Keywords
- Contact line pinning, Droplet evaporation
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanical Engineering
- Chemical Engineering(all)
- Fluid Flow and Transfer Processes
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In: International Journal of Heat and Mass Transfer, Vol. 51, No. 13-14, 01.07.2008, p. 3696-3699.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Evaporation dynamics of sessile liquid drops in still air with constant contact radius
AU - Schönfeld, Friedhelm
AU - Graf, Karl Heinz
AU - Hardt, Steffen
AU - Butt, Hans Jürgen
PY - 2008/7/1
Y1 - 2008/7/1
N2 - Evaporation of sessile drops with constant wetting radius is investigated. In contrast to constant contact angle the temporal evaluation of the droplet volume can not be formulated in a closed form. We provide two approximations for initial contact angles below 90° which allow predicting the evaporation dynamics in practice easily. The derived linear approximation is suitable for small initial contact angles with a maximum relative deviation of 1% for contact angles below 30°. Further, we provide a non-linear algebraic approximation with a maximum relative error 0.3% in the entire range of contact angle considered.
AB - Evaporation of sessile drops with constant wetting radius is investigated. In contrast to constant contact angle the temporal evaluation of the droplet volume can not be formulated in a closed form. We provide two approximations for initial contact angles below 90° which allow predicting the evaporation dynamics in practice easily. The derived linear approximation is suitable for small initial contact angles with a maximum relative deviation of 1% for contact angles below 30°. Further, we provide a non-linear algebraic approximation with a maximum relative error 0.3% in the entire range of contact angle considered.
KW - Contact line pinning
KW - Droplet evaporation
UR - http://www.scopus.com/inward/record.url?scp=44649130006&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2007.12.027
DO - 10.1016/j.ijheatmasstransfer.2007.12.027
M3 - Article
AN - SCOPUS:44649130006
VL - 51
SP - 3696
EP - 3699
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
SN - 0017-9310
IS - 13-14
ER -