On the mixing of colorants in the viscous polymer solution, continuous annular channel type mixer was designed. Viscous fluids that initial radial interface through a annular channel, will accomplish mixing by increasing the interface area.
Data were obtained from mixing black and white pigmented Methyl Cellulose solution at room temperature.
In this study, experimental variables were the feed rate, rotating speed of inner cylinder, height, channel clearance with fixed striation thickness at feedports.
The correlation between striation thickness ratio with experimental variables was as follows;
$(So/S max.) = 0.347 (d/Di)^{-1.257} (L/Di)^{1.031} (Nre,\bar{v}z)^{-1.012} (Nre,u)^{0.997}$
Striation thickness decreased with height and rotating speed but increased with annular channel thickness and feed rate. These experimental results were good agreement with theoretical analysis.
