1 / 10 / 2025
3 mins tutorial: Prepare CFD cases in Chopmesh
Introduction
This tutorial provides a step-by-step workflow for CFD analysis, covering geometry modeling, meshing, boundary condition setup, CFD export, e.g. to Fluent..
Modeling
Cold Fluid
Hot Fluid
Solid
Chop mesh Interface
ChopMesh Component Functions
Select Geometry: Import geometric files (stl, vdb, implicit)
Set Mesh Domain: Set calculation domain range
Set Mesh Resolution:
Mesh resolution at level 0: controls the base grid coarseness (higher value = finer mesh).
Level of refinement: controls local mesh refinement(0-6)
Small feature augment: adjusts the treatment of small features.
Generate Mesh: Generate the mesh with the chosen settings.
Set Boundary Patches: Define boundary zones (e.g., inlet, outlet, wall, symmetry).
Simulation Setting: Predefine solver-related settings (like fluid type, turbulence model).
Add Inflation Layer: Add boundary-layer mesh near walls.
Mesh Export: Export mesh in the desired format
Select gemometry
Mesh generation
After importing the geometry file, you need to select the correct internal mesh or external mesh option, then adjust the mesh resolution settings. Once these parameters are defined, simply click Step 4: Generate Mesh to create the computational grid.
Boundary patch
The next step is Set Boundary Patches. First, open this option and click Apply Boundary Patch Tolerance. Then, click Pick BC and select any point on the surface you want to assign. Finally, click Confirm to complete the boundary patch definition.
Mesh Export
After completing all the required steps, proceed to Mesh Export. In the Select Export Mesh Format option, choose the desired format for your mesh.
Results
Solid of temperature
Hot Fluid of temperature
Colid Fluid of temperature
