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http://hdl.handle.net/1942/31211
Title: | Liquid bridge length scale based nondimensional groups for mapping transitions between regimes in capillary break-up experiments | Authors: | Verbeke, Karel Formenti, Susanna Vangosa, Francesco Mitrias, Christos REDDY, Naveen Anderson, Patrick Clasen, Christian |
Issue Date: | 2020 | Publisher: | AMER PHYSICAL SOC | Source: | Physical Review Fluids, 5 (5) (Art N° 051901) | Abstract: | Criteria to identify transitions between dynamic self-similar linear thinning regimes of liquid bridges are of utmost importance in order to accurately interpret results in capillary break-up rheometry. Currently available criteria encompass many experimental difficulties or rely on numerical approaches. Here, we introduce a different set of nondimensional 16 groups, Oh L = η in / √ γ ρL and a = R/L, based on the experimentally relevant axial length scale of a liquid bridge L, for viscous-dominated fluids undergoing capillary break-up in air. This framework is further extended to encompass the effect of outer viscous fluids. As a result, we present a two-dimensional operating map in which the boundaries are set by fluid properties and a single geometrical parameter, related to the experimental configuration. This approach establishes guidelines to correctly interpret experimental data and identify transitions in capillary break-up experiments of liquid bridges surrounded by fluids of different viscosities. | Keywords: | Adhesives;Drop breakup;Instability of free-surface flows;Liquid bridges;Paints;Rheological properties;Rheology techniques | Document URI: | http://hdl.handle.net/1942/31211 | ISSN: | 2469-990X | e-ISSN: | 2469-990X | DOI: | 10.1103/PhysRevFluids.5.051901 | ISI #: | WOS:000529846200001 | Rights: | 2020 American Physical Society. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2021 |
Appears in Collections: | Research publications |
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File | Description | Size | Format | |
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PRF-Draft.pdf Restricted Access | Peer-reviewed author version | 1.67 MB | Adobe PDF | View/Open Request a copy |
PhysRevFluids.5.051901.pdf Restricted Access | Published version | 859.76 kB | Adobe PDF | View/Open Request a copy |
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