This tutorial demonstrates how to use the surface and volume meshing tools within STAR-CCM+ to build a single region polyhedral volume mesh with prism layers, starting from an STL type geometry exported from a CAD package. The inputs required to build a trimmed cell mesh with prism layers are also covered. The geometry is that of a control valve typically used for water flow management and is "CFD ready". That is, the appropriate fluid side passage has been extracted and suitably prepared ready for CFD use.
The geometry used in the tutorial is shown below.
The control valve is shown in an almost closed position, with flow entering at the near end and exiting at the far end. Only a half model will be constructed due to the symmetrical nature of the geometry. All the appropriate boundaries, along with feature curves, will be defined as part of the meshing process.
A modified geometry, with the valve in an open position, will also be imported and the same meshing values used in the original mesh will be applied in order to remesh the new geometry at the push of a button.
The remainder of this tutorial is split into the following sections: