VIBRO-MIXER SUSPENSION
Objective
Provide an understanding of varying flow field inside tank Determine particle concentration distribution Predict shear stresses acting upon insulin crystals
Results
Time varying shear rates, fluid velocities & pressures Stagnation points and vorticities in mixer Flow streamlines & particle traces Particle concentration
Benefits
Provide detailed understanding of flow distribution Recommend design changes for more homogeneous filling, less waste and higher yield
Process/design parameters
Plate vibration frequency & amplitude Plate orifice configuration & shape Plate height	Tank fluid level Tank bottom shape Clearance between plate and tank
Performance Evaluations
Shear stresses of crystals were found to be high and possible damaging Fluid motion near plate edge Vortex patterns inside tank Areas of high shear stresses acting on crystals: - Near plate - Inside orifice - Inside vortices