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TOPIC: Local refinement

Local refinement 12 years 8 months ago #4110

  • sumit
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Dear All,

Can any one give me some hints as to how can I do local refinement for mesh in Bluekenue. I have been through pdf files but I did not see any thing like that.

All help is greatly appreciated.

Thanks,
Sumit
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Re: Local refinement 12 years 8 months ago #4111

  • matthias
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You can create and générate your local mesh. After, you create your global mesh. You put the local mesh in submesh of global mesh and you generate your global mesh.

Et comme mon anglais est mauvais.
Tu créé ton maillage local et tu le générère. Tu créé ton maillage global. Tu fait glisser ton maillage local dans ton maillage globale, dans l'onglet submesh. Et tu le génère. Ca devrait fonctionner.


I hope it will be usefull

Matthias
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Re: Local refinement 12 years 7 months ago #4115

  • Serrer
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Hi,

There are actually 2 ways to do this.

1. As Matthias described:
- Generate a refined mesh and include it as a submesh in the
global mesher.
- this is the preferred method.

2. If however, you have an existing mesh for which you do not have the full specification (ie. the "t3m" file)
- first cut a hole in the mesh by defining a polygon
and using "Edit->T3 Mesh->Delete Elements in Polygon",
- now create the outline of the hole by:
- selecting the mesh in the WorkSpace and using
"Tools->T3 Mesh->Extract Edges (Shorelines),
- select and copy the "shoreline" of the hole,
- and paste this shoreline to the "Outline" of a new
Mesh Generator object,
- define your contraints in the usual manner but make
sure that the "Resample Outline" option is turned off,
- once you have created the new "submesh",
- select your original mesh with the hole and use
"Edit->T3 Mesh->Merge Mesh...".

Cheers... Martin
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Re: Local refinement 12 years 7 months ago #4116

  • sumit
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Thanks a lot Matthias and Martin, I am going to try this and see how it goes.

Cheers,
Sumit
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Re: Local refinement 12 years 7 months ago #4119

  • sumit
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Hey Martin,

Thanks a lot for the meshing tip, let me ask you one more question. After having made the mesh in Bluekenue is there some way I can do bathymetry interpolation for the bottom inside Blue kenue ?

Or lets say corresponding to all the nodes in my mesh can I add the bottom value from a file ? One way that I can think of is that from .t3s fle I can extract the x,y points of all the nodes; do the bathymetry interpolation correspnding to these nodes but then how do I read it back in my selafine file as the bottom ?

I hope my problem makes sense ?

Thanks for all the help.

Cheers,
Sumit
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Re: Local refinement 12 years 7 months ago #4124

  • c.coulet
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Hi
In kenue, once the mesh wwas generated, you could use it to create a selafin object.
In the selafin object, you could add the BOTTOM variable and the use the tool map object to map your datas on the bottom layer.

Hope this helps
Christophe
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Re: Local refinement 12 years 7 months ago #4127

  • Serrer
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Hi,

Please see the new thread I started with the tag line
"Creating SELAFIN files and mapping bathymetry to a mesh in Blue Kenue"

Cheers... Martin
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