Week 3 Challenge : CFD meshing on Turbocharger

Geometry

The given geometry had many overlapping surfaces ,single cones and triple cones 

So before doing the surface meshing or volumetric meshing , the geometry should be free of errors

So as a step by step process ,first was to look for single cones ,which appeared in so many areas 

mostly the cones where projected to the required surface ,to establish a complete surface or face

Next the overlapping surfaces were deleted

Also the check was done for triple cones and intersecting surfaces

That was also cleared

Surface Meshing

All the check for geometry and interscetions have been done 

Blade stage-1 = 1 mm

Blade stage-2 = 1 mm

Impeller = 2 mm

Shaft rotor = 1 mm

Turbo casing = 5 mm

Compressor casing = 5 mm

Inlet casing cover = 5 mm

According to the given data the meshing was done for each part of components

For each meshing the quality criteria and meshing parameters are defined 

Fo each mesh length the min and max length is defined 

Also make sure the tria elements are selected

then using spot mesh the meshing is done

Volume meshing

The surface meshing is done as a prerequisite for volume meshing

when we click the icon Define under Volumes , volume detections will pop up

Using this we can obtain the list of unmeshed volume

Also The volumes which are not needed can be deleted from this list

Remainig volume is meshed using tetracfd and the geometry is ready for CFD simulation