Hi, <br><br>Going on with my Paraview ensight gold format problem I insert both hexa8 and quad4 elements in the same part. The result is the same as before with the N wall being displayed incorrectly (see fig 1 from the link) and the inner flow shifted somehow (from the expected results - fig2) as it is shown in figure 3:
<a onclick="return top.js.OpenExtLink(window,event,this)" href="http://www.schunternet.de/%7Eamagda/cfd/paraview.html" target="_blank">http://www.schunternet.de/~amagda/cfd/paraview.html</a><br><br>A link to a sample case:
<a href="http://www.schunternet.de/~amagda/cfd/Paraview-ensight.tar.gz">http://www.schunternet.de/~amagda/cfd/Paraview-ensight.tar.gz</a><br><br>Nobody else faced such problems ? It will be of great help if other users of ensight gold format (3D unstructured grid) can confirm if similar cases work or not for them.
<br><br>Best regards, <br>Adrian<br><br><br><br><br><div><span class="gmail_quote">On 10/3/07, <b class="gmail_sendername">Adrian Magda</b> <<a href="mailto:amagda@gmail.com">amagda@gmail.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi Amy,<br><br>Thanks a lot for your answer.<br><br>1 - The hexa8 cells are in the part1 and quad4 in the part2 so they do<br>not belong to the same part.<br><br>2 - Of course as the quad4 cells are the boundary conditions they will
<br>share a common face with the hexa8 cells. Assuming that this is wrong<br>than a similar behavior should be seen for all other walls (instead we<br>see this only for ONE single wall ). More how it is possible that this
<br>boundary quad4 elements will affect the inner flow? I mean I observed<br>very different flow pattern for the full geometry and the part1 geometry<br>(separated applying the "Extract Datasets" filter)? Have you also
<br>noticed that ? There should be whatsoever no difference between them, no?<br><br>Also in ensight there is no problem observed when i postprocessing this<br>case.<br><br>Best regards<br>Adi<br><br>Amy Squillacote wrote:
<br>> Hi Adrian,<br>><br>> I was able to download the data from the link you sent. I do see the<br>> same results as you show in the link you included in the email<br>> conversation. I have a few questions for you.
<br>><br>> * Are the hex8 and quad4 cells in the same part?<br>> * Are the hex8 and quad4 cells supposed to share a common surface<br>> plane? It looks like you have exactly the same exterior surface<br>> regardless of which part you choose, which would explain the
<br>> flickering you see.<br>><br>> - Amy<br>><br>> Adrian Magda wrote:<br>>> Hi Samuel<br>>><br>>> Thanks a lot for your answer.<br>>><br>>> Both hex8 and quad4 store temperature as cell data. You are right the
<br>>> quad4 elements<br>>> are overlaying the hex8 surface.<br>>><br>>> If there is only a visual competition between the display from each<br>>> part I think that should not effect the inner flow far from the wall
<br>>> no ?<br>>><br>>> For you all this works without problem ?<br>>><br>>> All the best<br>>> Adrian<br>>><br>>> On 9/30/07, *SamuelKey* <<a href="mailto:samuelkey@comcast.net">
samuelkey@comcast.net</a><br>>> <mailto:<a href="mailto:samuelkey@comcast.net">samuelkey@comcast.net</a>>> wrote:<br>>><br>>> Greetings Adrian,<br>>><br>>> I use an EnSight Gold format with "parts," unstructured grids,
<br>>> multiple<br>>> element types.<br>>><br>>> Is Temperature point or cell data for the hex8 elements?<br>>><br>>> Is Temperature point or cell data for the quad4 elements?
<br>>><br>>> In my experience, each "part" is a separate displayable object.<br>>> While<br>>> the nodal points appear "unique" to each "part" in the ParaView data
<br>>> set, the nodal points have the exact same coordinates since the<br>>> quad4<br>>> are overlaying the hex8 surface (at least, in my data sets they<br>>> would).<br>>><br>>> With quad4's overlaying the hex8 surface being coincident, I
<br>>> think you<br>>> may seeing a visual competition between the display from each part?<br>>><br>>> Regards,<br>>><br>>> Sam Key<br>>><br>>> Adrian Magda wrote:
<br>>> > Hi all Paraview users,<br>>> ><br>>> > I am using Paraview to plot my cfd results. I am using ensight<br>>> gold<br>>> > binary format. I can write and read the data with no problem,
<br>>> but it<br>>> > seems paraview interprets the things wrong.<br>>> ><br>>> > The geometry file is divided in two part one containing the<br>>> internal<br>>> > flow (hexa8, unstructured) and a part containing the boundary
<br>>> file<br>>> > (quad4 unstructured elements).<br>>> ><br>>> > The problem is that always the temperature on the North wall of my<br>>> > geometry seems to mixed with data from both hexa8 (first
<br>>> elementh near)<br>>> > the wall and quad4 element (placed on the hexa8 wall). More if i<br>>> do a<br>>> > cut trough the geometry and display the temperature the<br>>> temperature
<br>>> > profile is completely wrong<br>>> > On the other hand if i use "Extract Datasets" option i can see the<br>>> > correct Temperature profile on the inner flow and on the
<br>>> boundary area<br>>> > for each part separately.<br>>> > In order to check out more the encounterdproblem i decided to<br>>> export a<br>>> > simple OpenFOAM 3d case (20*20*20) (the 2d (in one direction
<br>>> only 1<br>>> > cell) works with no probblem) and also i noticed strange things.<br>>> For<br>>> > exporting i used the included foamToEnsight module.<br>>> ><br>
>> > Last and final try was to check the .case file in ensight8 and<br>>> none of<br>>> > the problems mentioned above were noted.<br>>> ><br>>> ><br>>> > Did anybody else have had such problems ? There is any way
<br>>> around this?<br>>> ><br>>> ><br>>> > Adrian<br>>> ><br>>> ><br>>> ><br>>> ><br>>> ><br>>><br>>> ------------------------------------------------------------------------
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