A plugin to preview Ansys Fluent cas.h5 and msh.h5 file.
For an introduction to the H5 format, refer to this article.
For an introduction to the CFF format, refer to this article.
After opening .cas.h5 file using HDFView, there are following groups:
- meshes
- settings
- special
The settings group contains multiple datasets, which contain the simulation configuration information stored as S-expression strings which you can find in the example folder.
- Cortex Variables: Face IDs and surface settings
- Domain Variables: Meaning unclear (e.g. (64 ()))
- Origin: Ansys Fluent build information (e.g. ANSYS_FLUENT 25.2 Build 10204)
- Rampant Variables: Most settings
- Solver: Solver information (e.g. ANSYS_FLUENT)
- TGrid Variables: Geometry mesh related
- Thread Variables: Cell zone and boundary condition
- Version: Version information (e.g. 25.2)
Important
Only tested with Ansys Fluent 2025 R2.
The plugin renders the case settings as indented JSON. It currently reads:
- solver
- materials
- boundary condition (cell zones and face zones)
- mesh interfaces
- custom field functions
- units
- named expressions
- solution methods and controls
- report definitions
- residuals
- monitor sets, plot sets, convergence sets
- cell registers
- iteration
- surfaces
- graphics (mesh, contours, vectors, pathlines, xy-plot, scene)
- input/output parameters
- Go to Release page and download the latest version.
- Make sure that you have QuickLook running in the background. Go to your Download folder, and press
Spacebaron the downloaded.qlpluginfile. - Click the “Install” button in the popup window.
- Restart QuickLook.
- Select the cas.h5/msh.h5 file and press
Spacebar.



