[Paraview] Paraview 3.1.0 - ensight gold problem
amagda at gmail.com
Wed Oct 3 08:10:17 EDT 2007
Hello Paraview users,
I am back with my problem. After more testing i came to a point to
believe there might be a bug in processing ensight gold data in paraview.
Again, i will briefly tell my problem. I use ensight gold unstructured
grid. I have my geometry organized in two parts:
part1 - the inner geometry of the flow, hexa8 elements
part2 - the wall boundary condition, quad4 elements, which overlay
over one side of the hexa8 elements
Now it seems that Paraview interprets somehow wrong the information
provided. On one wall i always have kind of competition between hexa8
and quad4 elements. See the first figure in the link provided below.
If i use the "Extract Datasets" filter and display the results only for
the part1 containing only the hexa8 and display the temperature profile
in a cut inside the geometry i have the expected results. See the second
figure in the link below.
If i make a cut trough the entire geometry (part1 +part2) i see a very
strange interpolation for the temperature. See the third figure in the
I tested the results in ensight8 and all work as expected so i suppose
that there might be a bug in Paraview ensight gold module.
The link to the results:
All the best
> Hi Adrian,
> Adrian Magda wrote:
>> Hi Samuel
>> Thanks a lot for your answer.
>> Both hex8 and quad4 store temperature as cell data. You are right the
>> quad4 elements
>> are overlaying the hex8 surface.
>> If there is only a visual competition between the display from each
>> part I think that should not effect the inner flow far from the wall
>> no ?
> It would be my starting assumption that the inner flow far from the
> wall should not be affected. It must be affected or you would not ask?
>> For you all this works without problem ?
> My simulations are for the transient dynamic response of solids. As a
> result, I do not look at stream lines, for example. I do look at
> iso-surfaces of velocity; the velocity iso-surfaces always appear
> clean, that is, the iso-surfaces I have seen does not appear corrupted.
>> All the best
>> On 9/30/07, *SamuelKey* <samuelkey at comcast.net
>> <mailto:samuelkey at comcast.net>> wrote:
>> Greetings Adrian,
>> I use an EnSight Gold format with "parts," unstructured grids,
>> element types.
>> Is Temperature point or cell data for the hex8 elements?
>> Is Temperature point or cell data for the quad4 elements?
>> In my experience, each "part" is a separate displayable object.
>> the nodal points appear "unique" to each "part" in the ParaView data
>> set, the nodal points have the exact same coordinates since the
>> are overlaying the hex8 surface (at least, in my data sets they
>> With quad4's overlaying the hex8 surface being coincident, I
>> think you
>> may seeing a visual competition between the display from each part?
>> Sam Key
>> Adrian Magda wrote:
>> > Hi all Paraview users,
>> > I am using Paraview to plot my cfd results. I am using ensight
>> > binary format. I can write and read the data with no problem,
>> but it
>> > seems paraview interprets the things wrong.
>> > The geometry file is divided in two part one containing the
>> > flow (hexa8, unstructured) and a part containing the boundary
>> > (quad4 unstructured elements).
>> > The problem is that always the temperature on the North wall
>> of my
>> > geometry seems to mixed with data from both hexa8 (first elementh
>> > the wall and quad4 element (placed on the hexa8 wall). More if
>> i do a
>> > cut trough the geometry and display the temperature the
>> > profile is completely wrong
>> > On the other hand if i use "Extract Datasets" option i can see
>> > correct Temperature profile on the inner flow and on the boundary
>> > for each part separately.
>> > In order to check out more the encounterdproblem i decided to
>> export a
>> > simple OpenFOAM 3d case (20*20*20) (the 2d (in one direction
>> only 1
>> > cell) works with no probblem) and also i noticed strange
>> things. For
>> > exporting i used the included foamToEnsight module.
>> > Last and final try was to check the .case file in ensight8 and
>> none of
>> > the problems mentioned above were noted.
>> > Did anybody else have had such problems ? There is any way around
>> > Adrian
>> > _______________________________________________
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>> > ParaView at paraview.org <mailto:ParaView at paraview.org>
>> > http://www.paraview.org/mailman/listinfo/paraview
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