Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
Interfacial Phenomena and Heat Transfer
ESCI SJR: 0.258 SNIP: 0.574 CiteScore™: 0.8

ISSN Druckformat: 2169-2785
ISSN Online: 2167-857X

Interfacial Phenomena and Heat Transfer

DOI: 10.1615/InterfacPhenomHeatTransfer.2018025483
pages 113-128

COMPARABLE EFFECTS OF ADSORPTION AND LINE TENSION ON CONTACT ANGLE OF A NUCLEATED DROPLET ON A PARTIALLY WETTABLE SUBSTRATE

Dmitry V. Tatyanenko
St. Petersburg State University, 7–9 Universitetskaya nab., St. Petersburg, 199034, Russia
Alexander K. Shchekin
St. Petersburg State University, 7–9 Universitetskaya nab., St. Petersburg, 199034, Russia

ABSTRAKT

Thermodynamics of a small sessile droplet on a solid substrate is discussed with a focus on size dependence of its contact angle. An interface displacement (ID) model is employed to calculate profiles and contact angles of sessile droplets representing, in particular, critical droplets in nucleation on a partially wettable solid substrate. Line-tension and adsorption-related corrections to the contact angle cosine are found within the ID model and illustrated with numeric calculations for a short-range interface potential. The line tension and adsorption effects on the contact angle are shown to be comparable even in the first order in the contact line curvature. For smaller droplets, an intrinsic dependence of the line tension on the contact line curvature also becomes significant for the contact angle.


Articles with similar content:

Model of Elastohydrodynamic Lubrication with Molecularly Thin Lubricating Films. Part I: Development of Analysis
International Journal of Fluid Mechanics Research, Vol.30, 2003, issue 5
Keping Tang, Guoshen Lu, Yongbin Zhang
Recent Studies on Surface Roughness and Wettability Effects in Pool Boiling
International Heat Transfer Conference 15, Vol.1, 2014, issue
S. Gong, Xiaojun Quan, L. N. Dong, Fangjun Hong, Ping Cheng
Effect of conjoining/disjoining pressures on evaporation from or condensation on coated surfaces
International Heat Transfer Conference 12, Vol.3, 2002, issue
Alexander Oron, S. George Bankoff
EFFECT OF DROP SHAPE ON HEAT TRANSFER DURING DROPWISE CONDENSATION UNDERNEATH INCLINED SURFACES
Interfacial Phenomena and Heat Transfer, Vol.1, 2013, issue 4
Sameer Khandekar, Basant Singh Sikarwar, Krishnamurthy Muralidhar
NUMERICAL STUDY OF CONJUGATE HEAT TRANSFER IN EVAPORATING THIN LIQUID FILM OF A SESSILE BINARY DROPLET ON HEATED SUBSTRATES
International Heat Transfer Conference 16, Vol.19, 2018, issue
Leping Zhou, Qiaobian Xu