1401 Bifurcation of Viscous Fingering in Surfactant Solutions
Details
When air pushes a more viscous fluid in two parallel plates by a syringe pump, viscous fingering pattern have been observed. Water and aqueous glycerin solutions are used as Newtonian fluids. Aqueous solutions of CTAB(Hexadecyletrimethylammonium Bromide) with NaSal as salt are used as non-Newtonian fluids. It was found that it showed the bifurcation of viscous fingering to be different by a kind of solution. And, it was found that the solution concentration, salt concentration, gap and air pressure influenced a bifurcation pattern. Furthermore, it was found a complicated bifurcation pattern in surfactant solution with higher salt concentration. Then, tip speed of bifurcation was high.
