Numerical simulation of coalescence phenomena of oil-in-water emulsions permeating through straight membrane pore

Yasushi Mino, Yusuke Kagawa, Toru Ishigami, Hideto Matsuyama

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

We numerically investigated the demulsification phenomena of oil-in-water (O/W) emulsions using a membrane coalescence process. We simulated the permeation of O/W emulsions through a membrane with a single straight pore using our numerical framework based on the coupled level set and volume-of-fluid (CLSVOF) method. With a low droplet volume fraction, small droplets, and a large pore size, the oil droplets frequently passed through the membrane without attaching to its surface. After the steady coalescence of the droplets on the membrane surface at the permeation side, large oil droplets could be obtained. With a higher droplet volume fraction, larger oil droplets, and smaller membrane pores, the oil droplets easily blocked the membrane pores and were thus forced away by the permeating flow, which yielded relatively small oil droplets. Our numerical work revealed the fundamental dynamics of the coalescence of oil droplets in an O/W emulsion using a simple membrane model.

Original languageEnglish
Pages (from-to)70-77
Number of pages8
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume491
DOIs
Publication statusPublished - Feb 20 2016
Externally publishedYes

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Keywords

  • CLSVOF
  • Coalescence
  • Computational fluid dynamics
  • Membrane
  • Oil-in-water emulsion

ASJC Scopus subject areas

  • Colloid and Surface Chemistry

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