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Meshing > 3D tetrahedral meshing

Controlling the size of interior elements in a 3D tetrahedral mesh

Use the Internal Mesh Gradation slider in the 3D Tetrahedral Mesh dialog box to control how the software increases the element size in the interior of the volume.

  • Use the Internal Mesh Gradation slider to define the value that the software uses as a multiplier for increasing the length of one internal element edge to the next internal edge. For example, to maintain a constant gradation through the volume, you can specify a value of 1. This option replaces the Element Growth Rate Through Volume slider that was available in previous releases.

  • Use the Target Internal Edge Length Limit option to specify a desired limit for the length of element edges in the interior of the volume. If you specify a value that is larger than the overall Element Size, then this option sets the maximum size of elements inside the volume.If you specify a value that is smaller than the overall Element Size, then this option sets the minimum size of elements inside the volume.

Constant internal mesh gradation Internal Mesh Gradation value of 2Target Internal Edge Length Limit value of 100 mm

Where do I find it?

Application Pre/Post
Prerequisite A FEM file as the work part and displayed part
Command Finder 3D Tetrahedral Mesh
Location in dialog box Mesh Settings group
How do I

Create a 3D tetrahedral mesh

Learn more

3D tetrahedral meshing

Understanding the tetrahedral meshing process

Understanding 3D tetrahedral mesh quality evaluation

Midnode placement for parabolic elements

Creating at least two elements through the thickness of tetrahedral meshes

Understanding the Auto Fix Failed Elements process

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Controlling the size of interior elements in a 3D tetrahedral mesh, Simcenter 3D 2021.1 Series

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Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1404000 · retrieved 2026-07-17