✦ LIBER ✦

Marginal Regeneration and the Marangoni Effect

✍ Scribed by Vincent Adriaan Nierstrasz; Gert Frens

Publisher: Elsevier Science
Year: 1999
Tongue: English
Weight: 135 KB
Volume: 215
Category: Article
ISSN: 0021-9797
DOI: 10.1006/jcis.1999.6226

No coin nor oath required. For personal study only.

✦ Synopsis

On the basis of experimental observations described earlier, we have proposed that marginal regeneration is caused by surface tension gradients at the borders of mobile foam films. Marginal regeneration is the rate-determining mechanism in the drainage of such films, and, as such, a determining factor in the persistence (or long-term stability) of foams. Marangoni flows are caused by surface tension gradients, and these set off the exchange of thicker for thin film elements along the borders, while the total film area remains the same. In this paper we present simulations of the drainage of liquid in a vertical soap film, and show that it is realistic to expect large surface tension gradients along the lower border of the film under the conditions which lead to marginal regeneration. Copyright 1999 Academic Press.

📜 SIMILAR VOLUMES

Marangoni Flow Driven Instabilities and

Marangoni Flow Driven Instabilities and Marginal Regeneration

✍ Vincent Adriaan Nierstrasz; Gert Frens 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 78 KB

Fingering instabilities in films moving along wetted surfaces, dimpling in horizontal liquid films, and the drainage of vertical soap films by marginal regeneration are caused by surface tension gradients along the perimeter of the thin film. These gradients lead to a mechanical instability which in

Faraday Ripples, Parametric Resonance, a

Faraday Ripples, Parametric Resonance, and the Marangoni Effect

✍ Rudolf V. Birikh; Vladimir A. Briskman; Anatoly A. Cherepanov; Manuel G. Velarde 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 99 KB

In general, the combined actions of two destabilizing mechanisms do not simply add to each other. Here we show that there is a subtle interplay between parametric excitation and thermal gradients leading to interfacial instability, overstability, and generation of surface waves. The case studied ref

Some experiments on the Marangoni effect

✍ D. G. Suciu; Octavian Smigelschi; Eli Ruckenstein 📂 Article 📅 1967 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 494 KB 👁 2 views

An experimental study of the spreading and dissolving of thin liquid films under the action of surface forces is presented. The method consists of the continuous feeding of a liquid over the surface of another liquid into which it dissolves; the steady film thus obtained covers only a part of the su

Marangoni effect in the Couette flow

✍ H. Buggisch; G. Eitelberg 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 833 KB

Boundary effect on the Bénard-Marangoni

Boundary effect on the Bénard-Marangoni instability

✍ H.Q. Yang 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 922 KB

The marangoni effect in oil droplet/soli

The marangoni effect in oil droplet/solid attachment

✍ J.A Finch; G.J Lyman 📂 Article 📅 1976 🏛 Elsevier Science 🌐 English ⚖ 217 KB