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Geometry Repair
Manage CAD, FE, and 2D parametric sketch geometry.
Geometry
Create, edit, and cleanup geometry.
Geometry Cleanup
Clean up problematic areas on geometry.
Defeature Geometry
Use the Defeature tool to automatically find, review, and defeature holes and other non-essential features.
Perform Batch Repair
Use the Defeature: Batch tool to perform automatic cleanup operations on selected surfaces.

Welcome
What's New
View new features for HyperMesh CFD 2026.
Get Started
Learn the basics and discover the workspace.
Onboarding Resources
Discover HyperMesh CFD functionality with interactive tutorials and community resources.
Solution Layers
Solution-centric workflows allow you to traverse through modeling environments using a dedicated UI layer.
Manage Files and Data
Create, open, import, and save models.
Convert
Use the Convert tool to convert entire models between data types.
Geometry Repair
Manage CAD, FE, and 2D parametric sketch geometry.
- Sketching
  Create and edit 2D parametric sketch geometry.
- Geometry
  Create, edit, and cleanup geometry.
  - Repair Geometry
    Review geometric errors in the model's surfaces and solids and fix any defects.
  - Create Geometry
    Explore the tools used to create geometry.
  - Edit Geometry
    Explore the tools used to edit geometry.
  - Geometry Cleanup
    Clean up problematic areas on geometry.
    - Defeature Geometry
      Use the Defeature tool to automatically find, review, and defeature holes and other non-essential features.
      - Remove Cuts and Edge Fillets
        Use the Defeature: Cuts tool to extend surface edges and remove cutouts, fillets, and rounds.
      - Remove Small Features
        Use the Defeature: Small Features tool to find and remove/fix small parts, solids and surfaces.
      - Remove Logos
        Use the Defeature: Logos tool to find and remove logos.
      - Remove Surface Fillets
        Use the Defeature: Fillets tool to find and remove both round (convex) and fillet (concave) surfaces.
      - Remove Solid Holes
        Use the Defeature: Holes tool to remove solid holes in the model.
      - Perform Batch Repair
        Use the Defeature: Batch tool to perform automatic cleanup operations on selected surfaces.
    - Optimize CAD
      Fix gaps between stitched edges and vertices to make the actual geometry of the surfaces consistent with the model topology.
    - Validate the Model
      Use the Validate tool to validate your entire model, review surface and solid checks, and fix any issues.
  - Simplify Region
    Use the Simplify Region tool to create simple shapes around selected geometry.
- Discrete Geometry
  Work with discrete geometry like FE Geometry and floating elements.
- Model Build and Assembly
  Create, organize, and manage parts and subsystems.
Meshing
Generate surface/volume mesh by defining mesh controls, or interactively create and edit 2D surface mesh.
Setup
Prepare your model and run the simulation.
Post-Processing
Post-process the simulation results by creating visualizations and measurements.
Design Exploration
Once the baseline model is prepared, you can define morph volumes, morph geometry, create design shapes and run DOE studies. These tool work for both AcuSolve and ultraFluidX-based workflows.
Automation
Automate simulation processes with templates and utility scripts.
Solver Help
More resources for AcuSolve and ultraFluidX solvers.

Perform Batch Repair

Use the Defeature: Batch tool to perform automatic cleanup operations on selected surfaces.

Note: This feature is not supported for a model with discrete geometry.

From the Geometry ribbon, click the Defeature > Batch tool.

Figure 1.
Optional: From the guide bar, click and select Enable topology color mode.
The next time the tool is opened, topology color mode will be enabled automatically.
On the guide bar, click to define batch repair options.
Select surfaces to clean up.
On the guide bar, click Batch Repair.