Abstract
This study investigates the power consumption and mixing time of a two-bladed stirrer during the mixing of viscoelastic fluids in the laminar region of flow. For the rheological part, we use a polymer with low-concentration aqueous solutions that present viscoelastic behavior. The rheological study performed on polyacrylamide solutions shows the viscoelastic behavior of the generalized “Kelvin-Voigt” model. The power consumption for the viscoelastic fluids is greater than that needed to mix Newtonian fluids at the same Reynolds number. The mixing time is found to depend strongly on the viscoelasticity of the solutions.
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