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Appened Mesh lost after closure

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Old   March 4, 2019, 06:55
Default Appened Mesh lost after closure
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First some short introduction of my person: I'm Daniel and currently working on some projekt for my masterstudies in Hamburg.

For this projekt i want to calculate the forces on a propeller for modelships, i designed in a former project. For this i use a single moving referenceframe on a pipelike domain with no-friction wall on the outside. For modeling and calcutions i use Fluent 19.2 in Workbench.

Now i want to investigate effects of the diameter of this pipe. For keeping the initial Mesh (i call coremesh), i want to add so additional layer on this core.
Because i couldnot find a possibility to do so without changing coremesh in the mesher i wanted to create the coremesh and the layer seperately and combine them in Fluent.
Therefor i exported the layer out of the mesher as *.msh and the core is in the Mesher of the WB-Module.
For combining i start Setup as parallel and the core is loaded, cause it presence in the mesher. For adding the layer i use "Mesh->Append->Append Case File". By selecting the Option i get the first Message which says: "This operation is not supported for automatic up-dates and will only be used for current session. Do you want to proceed?"
When i continue, i select the layerdata and get the Message, some IDs changed. After that i define the boundaries, the interface and other settings.
The Mesh looks like this at this Point.

When i start the Calculations i only can select:"Use settings and meshchanges for current calculation only"

The calculatios work ok and the results look qualitytivly good. The transport across the interface in normal direction looks good; parallel it seems like there's a dampening.

Now the Problem:
When i close FLUENT and reopen it there's a Message: "Surface groupings have changed. ..."
If i want to display the velocity-vectors, the surfaces of the layer and the interior are missing.

I tried several Options to keep them. With merging the interiors and inlets, outlets i can display these, but objects i can't merge with others from the core are lost anyway.

I hope i gave all informations needed and some have an option for solving the Problem. Maybe even an explanation, why the interface seems like an dampeningface for nearly parallel velocities.

Best Regards

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File Type: jpg velocity_interface_6D.jpg (167.3 KB, 5 views)
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Old   March 5, 2019, 08:55
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I think it's a problem with syncing with workbench. If you use Fluent by itself, I think its not a problem anymore.
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Old   March 6, 2019, 07:49
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Thanks for the hint. In first tests it seems to work as expected. It keeps the Meshes and Interface after closure and i can work further with the calculations and solutions.
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append-mesh, fluent, interface

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