Department of Physics Papers

Document Type

Journal Article

Date of this Version

2000

Publication Source

Europhysics Letters

Volume

50

Issue

5

Start Page

695

Last Page

701

DOI

10.1209/epl/i2000-00326-y

Abstract

The standard drainage equation applies only to foam columns of constant cross-sectional area. Here, we generalize to include the effects of arbitrary container shape and develop an exact solution for an exponential, "Eiffel Tower", sample. This geometry largely eliminates vertical wetness gradients, and hence capillary effects, and should permit a clean test of dissipation mechanisms. Agreement with experiment is not achieved at late times, however, highlighting the importance of both boundary conditions and coarsening.

Comments

At the time of publication, author Douglas J. Durian was affiliated with University of California, Los Angeles. Currently, he is a faculty member at the Physics Department at the University of Pennsylvania.

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Date Posted:11 October 2017

This document has been peer reviewed.