Extrusion Examples

Extrusion Meshing

Overview

Extrusion meshing generates a structured mesh along the extrusion direction on the given model entity.  It can be combined with other meshing capabilities, such as boundary layers and mesh matching.

Capabilities:

  • 2D Face extrusions and 3D Region extrusion
  • Extruded boundary layers
  • Multiple source faces to single destination face volume extrusions
  • Complete control over layer height distribution
  • Tetrahedral, wedge, or hexahedral extrusion elements
  • Radial extrusions
  • Automatic resolution of source/destination faces for chained extrusions
  • Closed-loop extrusions

 

Embedded Volume Boundary Layers

3dblex_1.png   

 

3dblex_3.png

The fins of this model are individual regions that are extruded.  There are boundary layers specified to capture flow through the fins.  These boundary layers transition from the unstructured mesh seamlessly to the extruded mesh.

 

Curved Path Extrusions

 

curvedpipe  10671m4.png

100186.png11559m1.png

   

Various examples of extrusion along a curved path

Automatic resolution of extrusion directions

decommodarrows.png

Extrusions may be specified in multiple directions as show by the red arrows.  These will be automatically resolved to handle which extrusion should be performed when and in which direction.decommesh.png

 

Radial Extrusions

newmount.png

Extrusions can be specified in the radial direction, as shown with the highlighted yellow faces above and the concentric cylinders below.

60059mesh.png

Boundary Layers with Extrusion

In the example below, boundary layers are specified on the holes to align the mesh with the holes and give precise control of the mesh size.

with3dbls2.png

Graded Height Distributions

gradedExtrude1.png   gradedExtrude2.png

The structural bars are extruded with grading near the corners to more closely match the mesh size of the unstructured corner elements.