Droplet behavior in the presence of insoluble surfactants

Y.W. Stegeman, F.N. Vosse, van de, H.E.H. Meijer

Research output: Contribution to journalArticleAcademicpeer-review

32 Citations (Scopus)
192 Downloads (Pure)


The time-dependent behavior of droplets in the presence of insoluble surfactants, i.e., droplet elongation in supercritical flow (capillary number Ca=0.1) and droplet breakup in a quiescent matrix, is studied using a finite element method. The interfacial tension coefficient sigma as a function of the surfactant concentration Gamma is described using the Langmuir equation of state, sigma=sigma(0)+RTGamma(infinity) ln(1-Gamma/Gamma(infinity)). For droplets in an equal viscosity system, the influence of parameters Gamma, Gamma(infinity), and the Peclet number (ratio between surfactant convection and diffusion rate) on the elongation behavior has been investigated, whereas droplet breakup is considered for various values of the Peclet number for trace concentrations Gamma
Original languageEnglish
Pages (from-to)2785-2796
JournalPhysics of Fluids
Issue number8
Publication statusPublished - 2004


Dive into the research topics of 'Droplet behavior in the presence of insoluble surfactants'. Together they form a unique fingerprint.

Cite this