Droplet on a fiber: Geometrical shape and contact angle

X. F. Wu, Y. A. Dzenis

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

This paper is concerned with the geometrical shape, wetting length, and contact angle of a microdroplet on a fiber by using the method free energy variation. The governing equation and relevant boundary conditions of the microdroplet were re-derived based on the free energy variation of the droplet/fiber system. The geometrical shape of the droplet was determined as the combination of Legendre's elliptical functions of the first and second kinds, corresponding to the previous results in literature [6]. For contact angle θ >15°, a novel efficient semi-analytic approach was proposed to extract the contact angle from experimental data. The given approach can be used as theoretical basis of determining surface tension of fluids based on a sessile drop on a fiber.

Original languageEnglish (US)
Pages (from-to)215-225
Number of pages11
JournalActa Mechanica
Volume185
Issue number3-4
DOIs
StatePublished - Sep 2006

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanical Engineering

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