Effects of finger-growth velocity on reactive miscible viscous fingering

✍ Scribed by Yuichiro Nagatsu; Toshihisa Ueda

• Publisher: American Institute of Chemical Engineers
• Year: 2003
• Tongue: English
• Weight: 980 KB
• Volume: 49
• Category: Article
• ISSN: 0001-1541
• DOI: 10.1002/aic.690490322

✦ Synopsis

This article is our additional research on reactive miscible viscous fingering previously published . In our previous article, by e v r i m e n t and theory, the effects were studied of reactant concentrations on reactive miscible viscous fingering in which chemical reaction is instantaneous and passive for flow motion, when finger-growth velwity is low enough to neglect the convective transport effect where chemical species are transported primarily by molecular diffusion. Two types of reaction patterns were shown depending o n the dimensionless parameter $, ($, is an initial reactant concentration ratio normalized by a stoichiometric ratio of a chemical reaction.) When $, <s 1, the product spreads in a relatively broad area inside fingers. On the other hand, when $, x-1, the product concentrates at the fingertips. The flow of recent publications in this field Biickmann and Muller, 2000; De-Wit, 2001; Fujita et al., 2000) shows its continuing importance. The objective of this article is, in turn, to e v r i m e ntally elucidate the effects of finger-growth velwity on the relationship between fingering and reaction patterns.

® ® 0

Pe s 8 Pe .