The aim of this lesson is to understand how to prepare the geometry and generate the computational mesh for the CSTR. One of the critical aspects of simulating the fluid flow through a CSTR is the modeling of rotating impellers. Among the various approaches to model the rotation of parts in a fluid flow simulation such as moving and deforming meshing, overset meshing etc., one of the most widely used approaches is the Multiple Reference Frame (MRF) approach. In this technique, the movement of the parts, in our case the impellers, is not physically modeled i.e., there is no mesh motion.
In this lesson, we will first look at certain aspects such as creation of separate cell zones for moving parts, that need to be considered during the geometry preparation stage, which will help us employ the MRF technique to perform the simulation. Next, we will look at how to use Ansys Fluent Watertight Workflow to generate a poly-hexcore or mosaic type computational mesh. Download here the geometry files for this lesson.