Session 22

Introduction
SpaceClaim Meshing is one of the most important work environments in the software because it allows you to generate high‑quality meshes without leaving SpaceClaim or switching to external tools such as ANSYS Meshing or Fluent Meshing. In this session, you will learn how to create accurate and clean meshes using SpaceClaim’s mesh controls. We start with simple geometries and basic operations, then move on to building an O‑grid mesh for a cylindrical pipe‑flow case. By the end, you will be able to generate structured, CFD‑ready meshes directly inside SpaceClaim.

Mesh Quality
To obtain a more accurate and reliable mesh, several techniques can be applied to improve mesh quality. One effective method is to locally adjust the mesh size in critical regions in order to smooth out or eliminate poor‑quality cells. In many cases, mesh quality can also be improved by splitting geometry faces, which helps SpaceClaim create cleaner, more regular blocks and therefore yields a higher‑quality mesh.

O‑grid Mesh
SpaceClaim Meshing supports the creation of O‑grid meshes, and one of its key advantages is that you do not need to manually define the central block inside a circular cross‑section. Simply by selecting the appropriate curves of the geometry, the software automatically generates the central core block, greatly simplifying the meshing process for cylindrical flow domains.

Summary
This session covered how to use SpaceClaim Meshing to create high‑quality structured and O‑grid meshes for internal pipe‑flow problems. The workflow included basic geometry preparation, edge sizing, biasing, and boundary‑layer generation around cylindrical walls. It also emphasized improving mesh quality through local sizing adjustments and face splitting to produce cleaner topology blocks. Finally, the session outlined how to check mesh quality and export the resulting mesh for use in CFD solvers.