Equilibrium Shapes and Their Stability for Liquid Films in Fast Flows

Document Type

Article

Publication Date

8-31-2018

Abstract

We study how a suspended liquid film is deformed by an external flow en route to forming a bubble through experiments and a model. We identify a family of nonminimal but stable equilibrium shapes for flow speeds up to a critical value beyond which the film inflates unstably, and the model accounts for the observed nonlinear deformations and forces. A saddle-node or fold bifurcation in the solution diagram suggests that bubble formation at high speeds results from the loss of equilibrium and at low speeds from the loss of stability for overly inflated shapes.

Identifier

85053165740 (Scopus)

Publication Title

Physical Review Letters

External Full Text Location

https://doi.org/10.1103/PhysRevLett.121.094501

e-ISSN

10797114

ISSN

00319007

PubMed ID

30230866

Issue

9

Volume

121

Grant

1805506

Fund Ref

National Science Foundation

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