In the following example, all volumes are selected, and a size of 0.055 is assigned:
a.selectionMode = "Volume";
a.selectAll();
a.applyMeshSize(0.055);
In this next example, a size of 2.5 is assigned to all volumes. The selection mode is then switched to surface, and all surfaces are selected. Some are then deselected, and a size of 0.15 is assigned:
a.selectionMode = "Volume";
a.selectAll();
a.applyMeshSize(2.5);
a.selectionMode = "Surface";
a.selectAll();
a.deselect(3);
a.deselect(11);
a.applyMeshSize(0.15);
Automatic assignment of mesh sizes can be performed by completely omitting mesh definitions from the script. Autodesk Simulation CFD detects that no mesh sizes were specified and automatically assigns sizes based on the topology of the geometry.