Free Triangular
Add a Free Triangular node () to create an unstructured triangular mesh on boundaries in 3D and domains in 2D. You can control the number, size, and distribution of elements by using Size and Distribution nodes.
To create an unstructured triangular mesh:
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On the Mesh ribbon toolbar (Windows) from the Generators>Boundary () menu, choose Free Triangular.
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From the Mesh contextual toolbar (Mac and Linux), choose Free Triangular from the Boundary menu () (3D components) or click Free Triangular for 2D components.
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Right-click a Mesh node and choose Free Triangular. For 3D components, this is selected from the More Operations> menu.
Then enter the properties for the triangular meshing operation using the following sections:
Boundaries (3D) / Domain Selection (2D)
Define the boundaries (3D) or domains (2D) where you want to create an unstructured triangular mesh. Choose the level of the geometry from the Geometric entity level list:
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Choose Remaining to specify unstructured triangular mesh for remaining, unmeshed domains.
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Choose Entire geometry to create an unstructured triangular mesh in the entire geometry.
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Choose Boundary (3D) or Domain (2D) to specify the geometric entities for which you want to create an unstructured triangular mesh. Choose Manual in the Selection list to select the boundaries or domains in the Graphics window or choose All boundaries (3D) or All domains (2D) to select all boundaries or all domains.
Scale Geometry
To scale the geometry during the meshing operation, change the x-scale, y-scale, and z-scale in 3D to positive real numbers. If any of the scale factors are not equal to one (1), the software scales the geometry in the x, y, and z directions before meshing. After meshing, it restores the geometry and mesh to fit the original size. The scale factors make it possible to generate meshes that are anisotropic, and they are useful if the mesh generator creates many elements due to a thin geometry or if the mesh generation fails due to large aspect ratios in the geometry.
Control Entities
Select the Smooth across removed control entities check box to smooth the transition in element size across removed control entities. You can specify the number of smoothing iterations in the Number of iterations field. In the Maximum element depth to process field you can specify the maximum element depth, from the boundary layer interface, for the mesh points to be smoothed.
Triangulation
Here you can specify the triangulation method used when creating the triangular mesh. Select Automatic (default) to let the software use the best suited method, select Delaunay to use a method based on a Delaunay algorithm, or select Advancing front to use a method based on an advancing front algorithm.