[Paraview] Selecting wall boundary

[Samuel Key]

  Just to expand a little on Bart Janssens' comments --

The EnSight Gold binary results-file format has a "part"-construct. It 
allows the simulation results to be stored (and displayed in ParaView) 
as a collection of parts.

(1) Each part needs to be a complete, displayable graphics object; the 
part can reference the original nodal point set. As far as I know, all 
parts must have the same set of point and cell variables.

(2) The definition of a "part" is up to the simulation code developer. 
It can be any datum subset the developer wants to isolate and display, 
and it need not be anything recognizable by the original simulation 
code, for example, the wing surface. That is, it can be generated "on 
the fly" as the EnSight Gold results file is being written.

(3) Indeed, any collection of parts (one or more) may be accessed with 
the Extract Blocks filter.

I routinely subdivide my simulations into "parts" based on materials 
since I have objects  that have anywhere from 2 to 30 different 
materials (and each constructed from a variety of finite elements). I 
routinely write a time=0.0 EnSight Gold mesh file with node-sets and 
side-sets (surface facet sets) to which BC's are applied for model 
checking. The node-sets and side-sets are individually displayable 
graphics objects with cells with data.

Regards,

Sam Key

On 9/25/2010 3:39 AM, Bart Janssens wrote:
> On Friday, September 24, 2010 02:50:05 pm Aurélien Marsan wrote:
>> Hi,
>> If your mesh is structured, you can use the Extract Subset filter.
>>
>> 2010/9/24 Mubashir Ali<mubashir at iitk.ac.in>
>>
>> Hi,
>>
>>   I am new to paraview and i want to know how to extract wall boundary cells
>>   in paraview. I am simulating a 3D airfoil which specified as as wall
>>   boundary.
>>
>>   I am using code saturne which is an open source and finite volume solver
>>   and the results i get are in Ensight gold format. I need to see only
>>   airfoil(wall) so that i can see pressure distribution
> Also, since it's EnSight Gold, you should have a multi-block dataset, and
> using the ExtractBlock filter may allow you to extract the boundaries by name,
> depending on how your case is set up and how well it is exported to EnSight.
>
> Cheers,
>
> Bart
>