This page is the same list the program shows in Help → Known limitations, for version 0.6.0a1. Features marked Experimental run, but their results have not been verified; treat them as indications, not as numbers to design with.
Which features are Experimental?
Each of these works, but its results are not verified yet:
| Feature | Status | What has been checked so far |
|---|---|---|
| Compressible flow with the transonic SIMPLE solver | Experimental | It does not crash, but it did not converge on either of the two mufflers tried (mass imbalance up to 26 % after 3000 iterations). |
| Compressible flow with the pseudo-transient (local time-step) solver | Experimental | Stable on both mufflers tried, but too slow to converge in a practical number of iterations (mass imbalance 5–9 %). |
How should I use Experimental results?
As indications. An Experimental feature has no comparison against a reference yet, so its numbers can be used to explore a design but not to sign one off. The cases checked against measurements, exact solutions or a commercial finite-element code — with the reference type and the difference for each — are on the Validation page.
What are the general limits of this version?
- Windows 10 / 11, 64-bit only. The flow solver is OpenFOAM, run as separate programs. Its Windows build cannot compile code, so features that need compiled code are not available.
- Units are SI everywhere.
- Projects work on a copy. A project opened from a file works on a copy in the runs folder. Results of earlier runs of the same model are kept in their own run folders and are cleaned up automatically after a while (File → Settings, File → Manage runs; Keep protects a run). Save the project to keep its results with it.
- Mesh-independence studies with curvature sizing. A mesh-independence study in curvature sizing varies the fineness, which on curved walls changes the cells by less than a factor of two per step; the reported grid-convergence index there may not be reliable.
- Flow-generated noise is not part of this version.
- The technical Help is being completed. Articles marked Draft still lack their theory, typeset equations or references.
- Explore mode without a licence. Without a valid licence, or after a trial or licence has ended, the program runs in explore mode: projects open, every step works and meshes can be made, but solving is not available. A run that is already going is never stopped. See licence activation.
How do I report something unexpected?
Use Help → Send feedback. It saves your note together with the logs in one zip; send it to support.