A further note on “dynamics of packed beds with intraphase heat or mass transfer”

✍ Scribed by C.P. Jeffreson

• Publisher: Elsevier Science
• Year: 1969
• Tongue: English
• Weight: 455 KB
• Volume: 24
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(69)85033-5

✦ Synopsis

Shorter Communications adjacent to the film but this is weak as flow in the thin film observed, although circulation can only occur inside the is now slow. The film protile is symmetrical about the ver-drop in this case. Reverse flow in the ftlm in the early stages tical axis of the drop being thinnest at the edge with a of drainage provides an alternative explanation of the well secondary minimum at the centre. This symmetry and the known dimple. However, its persistence throughout the associated flow patterns persist up to the point of rupture of drainage can only be explained in terms of deformation of the film. Rupture occurs sooner when lycopodium powder is the interface by the pressure gradient sustaining the sympresent in the film as this bridges the gap between the two metrical outward flow [4]. The effect of the reverse flow is bounding surfaces.

to make the dimple larger than it would have otherwise been. Tilting of the drop would seem to be associated with the existence of a thick film in the early stages of approach and Acknowledgement -The author would like to thank Professor this in turn with reverse flow into the film. If the film initially W. Smith for his encouragement and the Science Research thins relatively quickly by symmetrical outward drainage Council for a generous grant. The experimental work was tilt does not occur. carried out by Mr. R. J. Travis.

The extension to a liquid drop approaching a flat plate is Reader in Chemical Engineering S. HARTLAND obvious and all the stages illustrated in Fig. 3 have been