The mechanism of mass transfer during formation, release and coalescence of drops. Part I—Mass transfer to drops formed at a moderate speed

✍ Scribed by P.M. Heertjes; L.H. de Nie

• Publisher: Elsevier Science
• Year: 1966
• Tongue: English
• Weight: 686 KB
• Volume: 21
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(66)87003-3

✦ Synopsis

Abstraet--A study of the rate of mass transfer to drops growing at a moderate speed has been made. The system used was that of isobutanol drops in a continuous water phase.

A model for the behaviour of the different parts of a drop during formation and release has been proposed. On this basis a comparison has been made between the growing of a drop by stretching of the surface or by addition of fresh surface elements. The influence of a restdrop, remaining at the capillary after drop release has been taken into account. The surface and volume of the drops during formation have been determined photographically.

The drops could be formed so that the time of formation was independent of the frequency of the drop formation. In the experiments the final drop volume has been kept constant.

The experimental results showed that during drop formation fresh surface elements are formed. The equation for the case investigated appeared to be (2"4~ 4BIlbO,'