Re: [Paraview] Removing wire frame from Ensight Gold Case Data format

[Andrew]

Hello, Niaz. Sorry for being late. I usually process such features in CFD
Post. If there is a long-time task (creating an analytical report) than I
do most visual processing in ParaView and some things that a too
non-convenient in ParaView I do in CFD Post. Fast processing like checking
current simulation state is usually done in CFD Post.
Possibly there are special types of curved slices in ParaView, I don't
know... What is great in CFD Post that it perfectly understands boundaries
including mass fluxes "from the box" for both CFX and Fluent (in ParaView I
use a simple Python script to do it, and I need to tweak this script every
time variable names change).

2017-08-25 18:14 GMT+03:00 Niaz M. via ParaView :

> Hi Andrew:
> Thats a smart way to create Boundary. Just wondering if you have some
> curved boundary, how do you do it ?
>
> Niaz
>
>
>
>
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Re: [Paraview] Removing wire frame from Ensight Gold Case Data format

[Andrew]

Hello.
Yes, there is a problem that exported CGNS doesnt consist BCs. So I create
slices at appropriate positions limiting their span with Threshold filter
by coordiates if needed. Another problem with BCs is that even if you have
surfaces there may be very limited variables so you cannot average by mass
flow that is absolutely unaccaptable. With slices you have all variables
that are difined in fluid domain. More suitable and simple way is using CFD
Post but it will consume a license. So I often postprocess "visual
features" in ParaView and use CFD Post's Function Calculator for averaging,
mass flow calculation on boundaries e.t.c. To my knowledge, there is no
such functionality in ParaView (various types of averaging, convenient BC
support, convenient multi-variant support, for example, if you need to open
3 separate cases and compute 10 quantities for each case, CFD Post will be
one of best choices). But, apart from consuming a license, CFD Post is not
so "feature-loaded" as ParaView. There is no Python Shell and only basic
tools in CFD Post so use what is more appropriate for particular usecases.
The thing that is called post processor in Fluent cannot be described in
good words and easily can hang. Don't use it if you can. CFD Post and
ParaView compared to this thing in Fluent are unrealistic good!

2017-08-23 17:14 GMT+03:00 Niaz M. via ParaView :

> Hi Andrew:
> Thanks for sharing your experience. Yes I have figure it out CGNS works
> best so far when you want to export from Fluent. But one think I miss the
> boundary name (or ID) in CGNS. Fluent doesn't write that info when you
> export as CGNS . It only export fluid domain.
>
> I am a newbie in Paraview. If I want to share some sample dataset  to
> developer what will be best way.
>
> Niaz
>
>
>
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Re: [Paraview] Removing wire frame from Ensight Gold Case Data format

[Utkarsh Ayachit]

Can you share a sample dataset? That'll make it easier.

Thanks
Utkarsh

On Tue, Aug 22, 2017 at 6:06 PM, Niaz M. via ParaView  wrote:

> Hello:
> I am exporting Fluent simulation results as Ensight gold case. Then
> importing in paraview. Then I am plotting a slice . I am selecting
> Representation as Surface (not surface with edge). But I can't get rid of
> Mesh (or wireframe) . Is there any way I can get rid of wire frame.
> Thanks in advance
>
>
> [image: Inline image 1]
>
>
> Niaz
>
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[Paraview] Removing wire frame from Ensight Gold Case Data format

[Niaz M. via ParaView]

Hi Andrew:
Thanks for sharing your experience. Yes I have figure it out CGNS works
best so far when you want to export from Fluent. But one think I miss the
boundary name (or ID) in CGNS. Fluent doesn't write that info when you
export as CGNS . It only export fluid domain.

I am a newbie in Paraview. If I want to share some sample dataset  to
developer what will be best way.

Niaz
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Re: [Paraview] Removing wire frame from Ensight Gold Case Data format

[Andrew]

Hello, Niaz.
I also noticed the same problem in some cases with export from Fluent. I
suspect that Fluent write files incorrectly, as if every cell was a
separate domain. It explains why ParaView becomes very slow with such files
and why we cannot remove mesh lines from representation. Sorry, cannot
suggest something useful, because didn't remember details. Maybe exporting
in CGNS or changing export options will help. Or, maybe, providing a sample
dataset to ParaView developers will help them to identify the problem and
introduce some tweak/workaround in reader.

Actually, there are various problems with exporting from Fluent and CFX in
neutral formats. Apart from the bug you mentioned, ParaView (4.3, 5.0, 5.2
for Win64) cannot open CGNS files written by CFX 18.0 Solver Manager: there
are no variables in list (I tweaked export settings without effect). At the
same time, it reads successfully CGNS written by CFX 14.5 Solver Manager.
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[Paraview] Removing wire frame from Ensight Gold Case Data format

[Niaz M. via ParaView]

Hello:
I am exporting Fluent simulation results as Ensight gold case. Then
importing in paraview. Then I am plotting a slice . I am selecting
Representation as Surface (not surface with edge). But I can't get rid of
Mesh (or wireframe) . Is there any way I can get rid of wire frame.
Thanks in advance


[image: Inline image 1]


Niaz
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