Obtaining self-similar scalings in focusing flows.

Journal Article

The surface structure of converging thin fluid films displays self-similar behavior, as was shown in the work by Diez et al. [Q. Appl. Math. 210, 155 (1990)]. Extracting the related similarity scaling exponents from either numerical or experimental data is nontrivial. Here we provide two such methods. We apply them to experimental and numerical data on converging fluid films driven by both surface tension and gravitational forcing. In the limit of pure gravitational driving, we recover Diez' semianalytic result, but our methods also allow us to explore the entire regime of mixed capillary and gravitational driving, up to entirely surface-tension-driven flows. We find scaling forms of smoothly varying exponents up to surprisingly small Bond numbers. Our experimental results are in reasonable agreement with our numerical simulations, which confirm theoretically obtained relations between the scaling exponents.

Full Text

Duke Authors

Cited Authors

  • Dijksman, JA; Mukhopadhyay, S; Gaebler, C; Witelski, TP; Behringer, RP

Published Date

  • October 22, 2015

Published In

Volume / Issue

  • 92 / 4

Start / End Page

  • 043016 -

PubMed ID

  • 26565341

Electronic International Standard Serial Number (EISSN)

  • 1550-2376

International Standard Serial Number (ISSN)

  • 1539-3755

Digital Object Identifier (DOI)

  • 10.1103/physreve.92.043016

Language

  • eng