Chemically-Driven Miscible Viscous Fingering: How Can a Reaction Destabilize Typically Stable Fluid Displacements?
We experimentally demonstrate that chemical reactions, by producing changes in viscosity at the miscible interface between two fluids, can be the very source of viscous fingering in systems that are otherwise stable in the absence of a reaction. We explain how, depending on whether the reaction product is more or less viscous than the reactants, different patterns develop in the reaction zone.
KeywordsReaction Zone Viscous Fluid Displacement Experiment Polyacrylic Acid Displacement Direction
We acknowledge JSPS, Prodex, the ITN—Marie Curie—Multiflow network and FNRS for financial support.
- 4.Vlad DH, Maher JV (2000) Tip-splitting instabilities in the channel Saffman-Taylor flow of constant viscosity elastic fluids. Phys Rev E 61:5394 Google Scholar
- 5.Broylesa BS, Shalliker RA, Cherrak DE, Guiochon G (1998) Visualization of viscous fingering in chromatographic columns. J Chromatogr A 882:173 Google Scholar
- 6.Lake LW, Schmidt RL, Venuto PB (1992) A niche for enhanced oil recovery in the 1990s. Oilfield Rev 4:55 Google Scholar
- 10.Nagatsu Y, De Wit A (2011) Viscous fingering of a miscible reactive A+B→C interface for an infinitely fast chemical reaction: nonlinear simulations. Phys Fluids 23:04310 Google Scholar