- Title
- Globally cohesive drops without interfacial tension
- Creator
- Nitsche, Ludwig C.; Nguyen, Anh; Evans, Geoffrey
- Relation
- Chemical Physics Letters Vol. 397, Issue 4-6, p. 417-421
- Publisher Link
- http://dx.doi.org/10.1016/j.cplett.2004.09.006
- Publisher
- Elsevier BV
- Resource Type
- journal article
- Date
- 2004
- Description
- For sedimenting, immiscible drops at unit viscosity ratio, a cohesive chemical potential is formulated to agree formally with the boundary-integral (BI) equation of Stokes flow. Against conventional wisdom, the resulting 'bulk cohesion' (BC) force field does not give rise to interfacial tension. Nevertheless, particle simulations based upon this concept accurately reproduce complex shape evolutions of trailing drops as calculated with BI. The BC force is easier to compute than volumetric versions of interfacial tension, and the radius of cohesion need not be small.
- Subject
- sedimenting; boundary-integral equation; bulk cohesion force; Stokes flow; interfacial tension
- Identifier
- http://hdl.handle.net/1959.13/33779
- Identifier
- uon:3294
- Identifier
- ISSN:0009-2614
- Language
- eng
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