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IDProjectCategoryView StatusLast Update
0004230OpenFOAMBugpublic2025-04-15 09:35
Reporterjskortel Assigned Towill  
PriorityhighSeveritymajorReproducibilityalways
Status resolvedResolutionfixed 
PlatformGNU/LinuxOSDebianOS Version12
Product Versiondev 
Fixed in Versiondev 
Summary0004230: NCC sliding interface, linear motion, interface does not slide; works with OF 12, but not with OF dev
DescriptionThe NCC sliding interface does not work with OF dev. In the example case, the sliding interface between the cylinder and the exhaust channel does not slide, but the piston motion deforms the whole exhaust channel mesh. The same case runs correctly with OF 12.
Steps To Reproduce1. Uncompress the example case.
2. Run the case with OF dev by running the Allrun script.
3. Visualise the results (ParaView) and focus on the interface between the cylinder (moving/deforming) and the exhaust channel (the first contact sliding interface activating, while the piston is moving).
4. Rerun the case with OF 12 by running the Allrun script.
5. Again, visualise the results and focus on the interface between the cylinder and the exhaust channel.

The example case is not to be shared publicly!
TagsNo tags attached.

Activities

will

2025-04-15 09:35

manager   ~0013556

Thanks for the report. Caused by a recent change in which un-stitch was made to happen on demand, rather than at a fixed location in the operation sequence. An additional call was necessary to ensure the mesh was not stitched at the point at which the cell motion solution was performed. Fixed here:

https://github.com/OpenFOAM/OpenFOAM-dev/commit/40d5cc1fb5fd330e4e5c7e50dd47a9455e8a40f6

I have removed the "not to be shared" case and made the rest of the report pubic, so that it can be referred to by anyone else having this problem.

Issue History

Date Modified Username Field Change
2025-04-12 18:28 jskortel New Issue
2025-04-12 18:28 jskortel File Added: NCC_engine_example.tar.xz
2025-04-15 09:32 will File Deleted: NCC_engine_example.tar.xz
2025-04-15 09:32 will View Status private => public
2025-04-15 09:35 will Assigned To => will
2025-04-15 09:35 will Status new => resolved
2025-04-15 09:35 will Resolution open => fixed
2025-04-15 09:35 will Fixed in Version => dev
2025-04-15 09:35 will Note Added: 0013556