Effect of Axial Agitator Configuration (Up-Pumping, Down-Pumping, Reverse Rotation) on Flow Patterns Generated in Stirred Vessels

PIV measurements of flow in an aerated tank stirred by a down- and an up-pumping axial flow impeller

“…These values are also similar to those found using LDV (Aubin et al [23]). For the down-pumping case with gassing, Fl is approximately 20% less than the Fl without gas.…”

Mixing Performance of Counter-Axial Flow Impeller using Computational Fluid Dynamics

“…The profile obtained by the counter-axial flow impeller were validated using the experimental profile obtained by (Aubin, et al, 2001), who used a pitched blade turbine with 45° incline, similar to one face of the counter axial impeller (Figure 10). The Comparison between the numerical results showed a good agreement, which proves the validity of the numerical method used in this work.…”

Investigation of Mixing in Shear Thinning Fluids Using Computational Fluid Dynamics

“…Using measured velocity profiles across the impeller, Ein-Mozaffari et al (2007a) found that the pulp suspension yield stress increased (by increasing fibre mass concentration, or fibre length) with the decrease in Fl. The circulation number for an axial flow impeller is defined as follows (Ranade & Dommeti, 1996;Aubin et al, 2001):…”

“…Table 3 shows the circulation numbers calculated using CFD for three axial flow impellers in the mixing of xanthan gum solution (Saeed, 2007;. The impeller pumping efficiency (η p ) and circulation efficiency (η c ) can be used to compare the performances of the different impellers in the mixing of shear-thinning fluids possessing yield stress (Mishra et al, 1998;Aubin et al, 2001):…”