[Paraview] Fwd: Gradient of Unstructed dataset

Tue Mar 24 22:23:59 EDT 2015

Hi Berk,

Thank you for your greatest efforts.

It makes sense to me, but I have to wait for the future version since I
dont have skills to integrate the CGNS reader plug-in into the Paraview
binary...

Thanks anyway and Best wishes,

Masaaki

2015-03-25 2:13 GMT+09:00 Berk Geveci <berk.geveci at kitware.com>:

> Hi Masaaki and others that may be interested,
>
> I identified the issue. The default CGSN reader that we use (which is from
> VisIt originally) produces incorrect results. The pressure values are
> incorrect. If you load the CGNS reader plugin and open the CGNS file with
> that, you will see the correct results. I tested this with the nightly
> binary of ParaView. I will ask someone in the ParaView team to disable the
> VisIt CGNS reader and move the plugin into ParaView proper so that we can
> use it by default.
>
> Best,
> -berk
>
> On Wed, Mar 18, 2015 at 8:59 AM, Berk Geveci <berk.geveci at kitware.com>
> wrote:
>
>> Thanks Masaaki. I will look into it.
>>
>> I wish that I could say the same about northern New York State. The high
>> temperature for today and tomorrow is 30F (-1C). Most of the snow melted
>> though so spring is coming :-)
>>
>> -berk
>>
>> On Tue, Mar 17, 2015 at 8:04 PM, Masaaki SHOJIMA <mshoji-tky at umin.ac.jp>
>> wrote:
>>
>>> Hi Berk, Armin, Michael and friends
>>>
>>> It is getting warm and flowers are starting to bloom in japan, this
>>> morning.
>>>
>>> Nightly Builds of Paraview was downloaded on 2015-Mar-18
>>> (ParaView-Windows-64bit-NIGHTLY.zip).
>>>
>>> Gradient of Pressure was calculated using "Gradient of Unstrucutred
>>> Dataset" filter and Z component of Grad (pressure) was visualized.
>>>
>>> Unfortunately, Nightly build did not settle the problem...
>>> The computed values by nightly builds were also half compared to those
>>> of Ensight.
>>>
>>> Could you take a look of the result in the attached PDF?
>>>
>>> Thanks for your continuous help.
>>>
>>> Masaaki
>>>
>>> 2015-03-17 22:01 GMT+09:00 Berk Geveci <berk.geveci at kitware.com>:
>>>
>>>> Hi Masaaki,
>>>>
>>>> I will hold off testing on my end until you have a chance to test with
>>>> nightly binaries. Please let us know how it goes.
>>>>
>>>> Regards,
>>>> -berk
>>>>
>>>> On Tue, Mar 17, 2015 at 8:09 AM, <dkxls23 at gmail.com> wrote:
>>>>
>>>>> You could test it with the nighly builds from the dashboard. That way
>>>>> you don't have to compile anything.
>>>>>
>>>>> You can find more information here:
>>>>> http://www.paraview.org/Wiki/ParaView_Nightly_Binaries
>>>>>
>>>>> -Armin
>>>>>
>>>>>
>>>>>
>>>>> On Tue Mar 17 12:27:27 2015 GMT+0200, Masaaki SHOJIMA wrote:
>>>>> > Hi, Michael,
>>>>> >
>>>>> > I found a web-page regarding the CGNS reader, in which you are making
>>>>> > important comments.
>>>>> > http://comments.gmane.org/gmane.comp.science.paraview.user/23957
>>>>> >
>>>>> > I have to wait for the next version, is it right?
>>>>> >
>>>>> > Thanks
>>>>> >
>>>>> > Masaaki
>>>>> >
>>>>> > 2015-03-17 16:02 GMT+09:00 Mickael Philit <mickey.phy at gmail.com>:
>>>>> >
>>>>> > >  Hello,
>>>>> > >
>>>>> > > sorry to intrude,
>>>>> > > I think the problem may come from the CGNS loader of ParaView.
>>>>> > > When using the CGNS plugin from ParaView development version, you
>>>>> get the
>>>>> > > same picture as Ensight.
>>>>> > > My two cents
>>>>> > >
>>>>> > > Mickael
>>>>> > >
>>>>> > >
>>>>> > > On 17/03/2015 05:04, Masaaki SHOJIMA wrote:
>>>>> > >
>>>>> > >  Hi Berk,
>>>>> > >
>>>>> > > I appreciate your kindness
>>>>> > >
>>>>> > > Here, I attaches the data.
>>>>> > > Compare Gradient.pdf (252KB)
>>>>> > >
>>>>> > > A calculated field by SC/Tetra solver is uploaded in Dropbox.
>>>>> (Calc.zip)
>>>>> > > Please download the data. It contains FLD format for SC/Tetra post
>>>>> and
>>>>> > > CGNS format for Ensight and Paraview.
>>>>> > > https://www.dropbox.com/s/5fpeu1qwhyzjn5u/Calc.zip?dl=0
>>>>> > >
>>>>> > > (1) I calculated the flow and the pressure in a simple cylinder
>>>>> for a test
>>>>> > > ( diameter 0.005m, length 0.01m). Plug flow at inlet with 0.03 m/s.
>>>>> > >
>>>>> > > (2) Data were transfered to Ensight and Paraview in CGNS format.
>>>>> > >
>>>>> > > (3) Pressure was mapped on the surface and compared between
>>>>> SC/Tetra post,
>>>>> > > Ensight and Paraview. All application provided same results.
>>>>> > >
>>>>> > > (4) Gradient (pressure) was calculated in each post and
>>>>> z-component of
>>>>> > > Gradient (pressure) was visualized with same colored contour. Only
>>>>> paraview
>>>>> > > provided a different image because the computed gradients in
>>>>> paraview had
>>>>> > > half values compared to SC/Tetra post and Ensight.
>>>>> > >
>>>>> > > (5) Gradient (velocity-X) was also calculated in each post and the
>>>>> > > X-component of Grad (velocity-X) was visualized. Same results as
>>>>> shown in 4.
>>>>> > >
>>>>> > >
>>>>> > > Thanks a lot.
>>>>> > >
>>>>> > > Masaaki
>>>>> > >
>>>>> > >
>>>>> > >
>>>>> > >
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>>>>> >
>>>>>
>>>>> --
>>>>> Sent from my Jolla
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>>>>> Powered by www.kitware.com
>>>>>
>>>>> Visit other Kitware open-source projects at
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>>>>
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