Characterization of the Aeration and Hydrodynamics in Vertical-Wheel™ Bioreactors

This publication investigates aeration performance, oxygen transfer, mixing characteristics, and hydrodynamic behavior in Vertical-Wheel bioreactors through a combination of experimental measurements and computational fluid dynamics modeling. The study evaluates oxygen mass transfer coefficients, velocity distributions, energy dissipation rates, shear profiles, and fluid-flow characteristics under multiple operating conditions. Predictive engineering models are developed to describe oxygen transport and mixing performance while assessing the impact of agitation on culture environments. The results demonstrate efficient mixing and oxygen distribution throughout the reactor while maintaining hydrodynamic conditions suitable for sensitive cell cultures. The work provides a detailed engineering characterization that can support process optimization, computational modeling, scale-down studies, and scale-up planning for bioprocess development applications.