The following overview is based on using an imported mesh from the feeder_clamp model, found in the COMSOL Multiphysics Applications Libraries and shown in Figure 8-7.

To form a single domain, use a Join Entities () node, which operates on the domain level (that is, add All domains to the selection). As a result, you can obtain a mesh for the model with a single domain.

To remove all edges, use a Delete Entities () node, which operates on the edge level (that is, add All edges to the selection). As a result, you can obtain a mesh for the model with no edges or points.

To define a boundary that defines the contact between the feeder and the clamp, use a Partition with Cylinder () node that operates on the boundary level (that is, add All boundaries to the selection, and use 10.001 as a cylinder radius, 0 and -20 for top and bottom, (15, 0, 35) as position, and y-axis as the axis type).

To define two boundaries that define screw channels, use a Partition by Expression () node, which operates on the boundary level (that is, add All boundaries to the selection and use (y+10)^2+(z-55)^2<=4 as the logical expression).

To create a boundary defining one of the washers used for the boundary loads of the model, use a Partition with Ball () node, which operates on the boundary level (use (5,-10, 55) as a ball center and 3.5 as a ball radius). The input boundary selection must be limited; otherwise, the ball operation also splits one of the cylinder boundaries, which was created by the Partition by Expression node.

By creating a duplicate of the Partition with Ball node and modifying the ball center (set x to 5) you can create a boundary for the second washer.

To create the boundaries for the mounting holes, use a Partition with Box () node, which operates on the boundary level (use (0 - 30, -30 - 10, 0.1 - 4.9) as box limits and use the Some vertex condition).

Using the Create Vertices () node, it is possible to add mesh vertices to a component with an empty geometry or create points in mesh vertices by clicking on them in the Graphics window.

Using the Create Edges () node, it is possible to add mesh edges to a component with an empty geometry or partition faces by clicking on the mesh edges in the Graphics window.

Using the Create Faces () node, it is possible to add faces on the surface of an imported 3D mesh.

Using the Create Domains () node, it is possible to add domains in an imported 3D mesh.

Using the Fill Holes () node, you can repair holes in an imported 3D surface mesh.

Using the Intersect with Plane () node, it is possible to intersect an imported 3D surface mesh with one or several parallel planes.

Using the Intersect with Line () node, it is possible to intersect an imported 2D mesh with a straight line.