Journal article
De-pinning instability of an evaporating-bounded liquid bridge: Experiments and axisymmetric analysis
Colloids and surfaces. A, Physicochemical and engineering aspects, v 596, p124664
05 Jul 2020
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Abstract
In this manuscript we examine the stability of an evaporating-bounded axisymmetric liquid bridge confined between parallel-planar similar substrates by using both theory and experiments. From classical stability analysis appearing in the literature it is now generally understood that a bounded liquid bridge stability diagram contains; a region of low slenderness where instability is caused by de-pinning; a region of low to large slenderness and small liquid bridge volume where axisymmetric minimum volume instabilities occur; and a low to large slenderness region with large liquid bridge volume where non-axisymmetric maximum volume instabilities are present. Under a quasistatic assumption we use hydrostatics via the Young-Laplace equation to estimate the minimum stable volume before either de-pinning or rupture occur for a range of axial and radial Bond numbers. To examine liquid bridge stability from the Young-Laplace equation for bounded-axisymmetric liquid bridges we analyzed zero capillary pressure solutions, and their transition, as stability limits. Observable trends show good agreement for critical behavior when comparing experiments and theory.
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Details
- Title
- De-pinning instability of an evaporating-bounded liquid bridge: Experiments and axisymmetric analysis
- Creators
- Tejaswi Soori - Iowa State UniversityThomas Ward - Iowa State University
- Publication Details
- Colloids and surfaces. A, Physicochemical and engineering aspects, v 596, p124664
- Publisher
- Elsevier
- Number of pages
- 10
- Grant note
- ACS-56921-ND9 / American Chemical Society Petroleum Research Fund; American Chemical Society
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000531548200002
- Scopus ID
- 2-s2.0-85082564660
- Other Identifier
- 991019167653004721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical