Mesh → Cell size
Purpose · Steps · Inputs and units · Limitations · Related topics
Purpose
Set the global target cell size in the Mesh generation panel and review the approximate cell count before generating the volume mesh.
Steps
- In the Mesh tab, find Cell size in the Mesh generation panel. Review the initial size estimated from the exported geometry volume.
- Enter a positive Cell size in the displayed length unit. Approx. cells updates as you edit the value; a smaller size increases the estimated count. Use local refinement where smaller cells are needed instead of reducing the size everywhere.
- Review Approx. cells to assess the mesh size, then generate the mesh and check its actual cell count and quality.
Inputs and units
| Input or value | Meaning | Units |
|---|---|---|
| Cell size | Target global mesh spacing; a smaller value usually produces more cells. | m (SI); ft (Imperial) |
| Approx. cells | Estimated cell count calculated from the exported geometry volume divided by the cube of the global cell size. The example shows about 100,050 cells at a size of 0.0304 m. | Cell count |
Limitations
- Approx. cells is an estimate. Local refinement and boundary layers can increase the final count; check the actual count after generation.
- A dash (—) is shown when a valid geometry volume or positive cell size is unavailable. Export closed geometry and enter a positive size to obtain an estimate.
- The initial size is a starting point, not an accuracy guarantee. Smaller cells increase runtime and memory requirements. Demo is limited to 250,000 cells.