EFFECTS OF GEOMETRICAL VARIABLES OF HELICAL RIBBON IMPELLERS ON MIXING OF HIGHLY VISCOUS NEWTONIAN LIQUIDS

Abstract

Mixing patterns in agitated vessels equipped with various types of helical ribbon impellers are observed by using capsules of liquid crystal as a tracer. As a result, the optimum geometrical variables for the mixing process are provided and the results explained by considering the relation between the mixing pattern and impeller geometry. A mathematical model is developed and applied in order to correlate the measure mixing times.