Learning Forum

[PDCoy]

Hello:

I'm working on a CFD project at my university using Fluent. I'm having serious troubles with fluent due to the fact that, once I've upgraded the mesh, Fluent doesn't get that mesh and stills working with the previous one. Sometimes Fluent asks if I want to get the new mesh, but sometimes it doesn't. I've been trying to sove that problem, but I have no more ideas.

Could anybody help me?

 

Thanks.

[Rob]

If you're pulling a mesh in from Workbench Meshing it ought to be automatic. If not check the ribbon tool bar in Fluent and see if there's an update. Note, if you change topology or labels it can cause problems. Also, if you've done adaption or are using non-conformal interfaces the update may fail. 

[PDCoy]

It seems there's no update. I hadn't changed any topology or label.

 

[Keyur Kanade]

make sure you update mesh before going to fluent. 

if this helps you, please mark this post as 'is solution' to help others on forum.

[PDCoy]

Sometimes it works, but not allways. I mean, I allways update the mesh, but sometimes it seems to be updated (a tick is shown in mesh). Then, I click "update", but Fluent doesn't show the message that advices that there's a new mesh. When I start Fluent, the mesh didn't changed.

[Keyur Kanade]

if you update mesh then set up cell does not show green tick mark. if you try to open set up cell it asks you if you want to update mesh in set up. 

 

[PDCoy]

That's the problem. Set up stills showing the tick mark once the mesh has been successfully updated. The mesh has changed, but Fluent doesn't change. Furthermore, Fluent loads the former mesh.

[Keyur Kanade]

did you update mesh?

please post image of mesh before and after update. also please post image of workbench project page before and after update mesh. 

did mesh cell show lightening sign before update? 

[PDCoy]

I can't post images because of the fact that today its working right. Yesterday was different. When I changed the mesh, the lightening sing wasn't shown. I don't know why sometimes it works and sometimes it doesn't. Could my OS be the problem? Or any software? I don't know what's wrong.

[PDCoy]

Now there is another problem. I did a mesh, but it's not saved although I save the project and the mesh is done.

This is the mesh.

And this is how the project looks.

There is also an error message.

If I update the mesh it stills the same. But If I enter in "mesh", the mesh is there!

[Rob]

Have you got a green tick to all components within the meshing tool? 

[PDCoy]

No. I've seen a question mark at "line body". I'm simulating an air foil. Is the model type wrong?

[Keyur Kanade]

suppress that line body and check again. 

[PDCoy]

It worked.

 

Thank you!

[PDCoy]

Hello.

After a few days working, problems are back. Although I've supressed the linear body, a question mark appears after meshing. It also can't be upgraded and, when I open the mesh, it seems to be empty. I'm wondering if there's any problem with my student license because the original problem stills there (Fluent doesn't get the upgraded mesh).

This is my screen after meshing.

When I open mesh:

Thanks.