Spreading of liquid drops over dry surfaces
Identifieur interne : 002D84 ( Main/Exploration ); précédent : 002D83; suivant : 002D85Spreading of liquid drops over dry surfaces
Auteurs : V. M. Starov [États-Unis] ; V. V. Kalinin [Russie] ; Jing-Den Chen [États-Unis]Source :
- Advances in Colloid and Interface Science [ 0001-8686 ] ; 1994.
Abstract
Spreading of thin, axisymmetric, non-volatile, Newtonian liquid drops over a dry, smooth, flat solid surface is considered both theoretically and experimentally in the case of complete wetting. The drop profile is solved analytically by matching the “outer” solution for large film thicknesses, where only the capillary effects are important, with the “inner” solution for small film thicknesses, where the viscous and disjoining pressure effects are comparable to capillary effects. It is shown that the apparent radius of the wetted spot, the apex height of the drop, and the apparent advancing dynamic contact angle follow different power laws in time and the advancing dynamic contact angle follows a power law in capillary number. Both the prefactor and the exponent of each power law are derived theoretically. Good agreement between the theory predictions and experimental measurements is shown for both the prefactor and exponent of each power law. It is necessary to emphasize that the theory suggested does not include any fitting parameters.
Url:
DOI: 10.1016/0001-8686(94)80030-8
Affiliations:
- Russie, États-Unis
- District fédéral central, Ohio, Texas
- Austin (Texas), Moscou
- Université du Texas à Austin
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M." last="Starov">V. M. Starov</name><affiliation wicri:level="4"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712-1062</wicri:regionArea><placeName><region type="state">Texas</region><settlement type="city">Austin (Texas)</settlement></placeName><orgName type="university">Université du Texas à Austin</orgName></affiliation></author><author><name sortKey="Kalinin, V V" sort="Kalinin, V V" uniqKey="Kalinin V" first="V. V." last="Kalinin">V. V. Kalinin</name><affiliation wicri:level="1"><country xml:lang="fr">Russie</country><wicri:regionArea>Moscow Institute of Food Technology, Volokolamskoe ch., 11, Moscow 125080</wicri:regionArea><placeName><settlement type="city">Moscou</settlement><region>District fédéral central</region></placeName></affiliation></author><author><name sortKey="Chen, Jing Den" sort="Chen, Jing Den" uniqKey="Chen J" first="Jing-Den" last="Chen">Jing-Den Chen</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Scitex Digital Printing, Inc., 3100 Research Blvd., Dayton, OH 45420</wicri:regionArea><placeName><region type="state">Ohio</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Advances in Colloid and Interface Science</title><title level="j" type="abbrev">CIS</title><idno type="ISSN">0001-8686</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1994">1994</date><biblScope unit="volume">50</biblScope><biblScope unit="supplement">C</biblScope><biblScope unit="page" from="187">187</biblScope><biblScope unit="page" to="221">221</biblScope></imprint><idno type="ISSN">0001-8686</idno></series><idno type="istex">A4F7730B0545DB79A7F7C03FEEB9455E5CF3F835</idno><idno type="DOI">10.1016/0001-8686(94)80030-8</idno><idno type="PII">0001-8686(94)80030-8</idno><idno type="ArticleID">94800308</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0001-8686</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Spreading of thin, axisymmetric, non-volatile, Newtonian liquid drops over a dry, smooth, flat solid surface is considered both theoretically and experimentally in the case of complete wetting. The drop profile is solved analytically by matching the “outer” solution for large film thicknesses, where only the capillary effects are important, with the “inner” solution for small film thicknesses, where the viscous and disjoining pressure effects are comparable to capillary effects. It is shown that the apparent radius of the wetted spot, the apex height of the drop, and the apparent advancing dynamic contact angle follow different power laws in time and the advancing dynamic contact angle follows a power law in capillary number. Both the prefactor and the exponent of each power law are derived theoretically. Good agreement between the theory predictions and experimental measurements is shown for both the prefactor and exponent of each power law. It is necessary to emphasize that the theory suggested does not include any fitting parameters.</div></front></TEI><affiliations><list><country><li>Russie</li><li>États-Unis</li></country><region><li>District fédéral central</li><li>Ohio</li><li>Texas</li></region><settlement><li>Austin (Texas)</li><li>Moscou</li></settlement><orgName><li>Université du Texas à Austin</li></orgName></list><tree><country name="États-Unis"><region name="Texas"><name sortKey="Starov, V M" sort="Starov, V M" uniqKey="Starov V" first="V. M." last="Starov">V. M. Starov</name></region><name sortKey="Chen, Jing Den" sort="Chen, Jing Den" uniqKey="Chen J" first="Jing-Den" last="Chen">Jing-Den Chen</name></country><country name="Russie"><region name="District fédéral central"><name sortKey="Kalinin, V V" sort="Kalinin, V V" uniqKey="Kalinin V" first="V. V." last="Kalinin">V. V. Kalinin</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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