The collision efficiency of two slightly deformable drops in thermocapillary motion at small Reynolds and Marangoni numbers is determined by a trajectory analysis involving methodology from matched asymptotic expansions. The outer solution for two spherical drops which are nearly touching provides t
On the Thermocapillary Motion of Deformable Droplets
โ Scribed by V. Berejnov
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 48 KB
- Volume
- 241
- Category
- Article
- ISSN
- 0021-9797
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โฆ Synopsis
In studies on Marangoni type motion of particles the surface tension is often approximated as a linear function of temperature. For deformable particles in a constant-temperature gradient far from the reference point this approximation yields a negative surface tension, which is physically unrealistic. H. Zhou and R. H. Davis (J. Colloid Interface Sci. 181, 60 (1996)) presented calculations where the leading deformable drop moved into a region of negative surface tension. Here numerical studies detail the restriction of the migration of two deformable drops given in terms of the drift time.
๐ SIMILAR VOLUMES
A three-dimensional boundary-integral algorithm has been developed to handle the tangential Marangoni stresses in thermocapillary motion of drops. Depending on whether the integration and observation points are on the same or different drops, singularity or near-singularity subtraction is used in th
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