(459f) The challenges of detailed CFDsimulations ofstirred lab-scalebioreactors
AIChE Annual Meeting
Wednesday, November 16, 2022 - 8:00am to 8:30am
In addition, in RANS simulations, the domain is usually divided into two zones: an inner one that ârotatesâ with the revolving impeller and an outer stationary zone. To this end, we have the disposal of two options: the steady-state Multiple Reference Frames (MRF) model and the transient Sliding Mesh (SM) approach. Defining such two zones in a small vessel with inserts is a challenge. The presentation will report on our findings when using MRF and SM and testing various grid types and grid densities, with a focus on gas hold-up, energy dissipation rates and spurious velocities.