Geometric disturbances in mechanically agitated tanks in laminar flow regime

• DOI: 10.22533/at.ed.31721922230810

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• Abstract:

  In this study, an alternative is presented to improve the mixing performance in a mechanically agitated container in a laminar regime, with two fluids with different rheological behavior. It is proposed to introduce a disturbance system to the flow generated by the impeller. The study is carried out using two different eccentricities as an alternative to improve the laminar mixing operation. Different scenarios were analyzed and two types of agitators were used, a Rushton turbine and a PBT turbine. Using two fluids, Fluid 1 (USP grade pure glycerin, with a dynamic viscosity of 0.9 Pa s) and Fluid 2 (Carbopol 0.05%, CMC 0.8% and polyacrylamide 0.025%). The flow patterns in the tank were visualized using the Colorimetry technique. Mixing times, homogeneity levels and power consumption were studied. As a result, it was shown that the method proposed in this work has a significant improvement in mixing efficiency at low Reynolds numbers in Newtonian fluids. This method can provide a new innovation in agitated systems.

• Número de páginas: 6