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List: paraview
Subject: Re: [Paraview] Suggested format for open unstructured CFD including
From: Samuel Key <samuelkey () bresnan ! net>
Date: 2009-08-26 23:12:29
Message-ID: 4A95C15D.1080704 () bresnan ! net
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Adriano,
I use the EnSight Gold binary formats with PV for unstructured mesh, 3-D
solid models where the mesh deforms with time. I actually put out two
file sets: (1) a time=0.0 file set that contains the mesh, and node-sets
and surface-facet-sets that are to be used with BC's, along with initial
condition information, and (2) a transient results datum-set from the
actual dynamic impact calculations. In each case, I use the Ensight
'part'-construct to place all of these in a single datum-set. Each
material domain (or in your case it could be mesh sub-domains of your
choosing) is a separate EnSight "part."
The Extract Block filter can then be used to isolate just those parts
you want to display/postprocess.
The time=0.0 file is used to check the mesh, BC's, and initial velocity
fields when present -- a huge help in debugging a complex finite element
model.
I have attached a Fortran-90 file that implements all of this.
Enjoy,
Sam Key
Adriano Gagliardi wrote:
> This is something I assumed they were doing, but with the limited experience
> I have using FieldView I was never sure. As you said, Tecplot and Ensight
> appear to do well enough with their open formats, and if I'm correct are
> cheaper per licence too. (On a side note, having used them both extensively
> and realise their individual merits, I believe ParaView is at least as
> capable as them both, but with more potential.)
>
> I didn't realise that there already existed a converter in OpenFOAM to
> FieldView format. I'll take a look and keep you posted, but it may be a week
> or so before I get round to working on it.
>
> Adriano
>
> p.s. Ensight Gold is a solid format from my own experience and most packages
> can handle it.
>
> ===================================
>
> Adriano Gagliardi MEng PhD
> Project Scientist
> Computational Aerodynamics
> Aircraft Research Association Ltd.
> Manton Lane
> Bedford
>
> Tel: 01234 32 4644
> E-mail: agagliardi@ara.co.uk
> Url: www.ara.co.uk
> -----Original Message-----
> From: A. Austen [mailto:metallurgist@airpost.net]
> Sent: 21 August 2009 23:10
> To: Adriano Gagliardi; Bastil2001@yahoo.de; 'ParaView'
> Subject: RE: [Paraview] Suggested format for open unstructured CFD including
> surface geometry?
>
> On Fri, 21 Aug 2009 08:39 +0100, "Adriano Gagliardi"
> <agagliardi@ara.co.uk> wrote:
> > I was intending on writing a FieldView reader, but I couldn't find any
> > documentation describing its formats.
>
> This is by deliberate action of the company that makes FieldView,
> "Intelligent Light." The documentation for the FieldView file formats is
> part of the overall documentation set which is expressly distributed under
> an "End User License Agreement" that forbids the dissemination of covered
> materials to non-licensees. They believe that making their file formats
> open gives their competition an advantage. I can't say that I even remotely
> agree with this (EnSight andTecplot, are just a couple of counterexamples),
> but they are probably not going to change their minds until their licensed
> users get upset and organized about lobbying them on this issue. This is
> why I'm interested in writing a translator for my own use, so I'm not
> forever stuck with only one visualization/post-processing tool for my
> datasets.
>
> So the consensus is that I should target the EnSight file format? I'm
> looking at their documentation now...
>
>
> > ===================================
> >
> > Adriano Gagliardi MEng PhD
> > Project Scientist
> > Computational Aerodynamics
> > Aircraft Research Association Ltd.
> > Manton Lane
> > Bedford
> >
> > Tel: 01234 32 4644
> > E-mail: agagliardi@ara.co.uk
> > Url: www.ara.co.uk
> > -----Original Message-----
> > From: paraview-bounces@paraview.org
> > [mailto:paraview-bounces@paraview.org]
> > On Behalf Of Bastil2001@yahoo.de
> > Sent: 20 August 2009 21:11
> > To: A. Austen; 'ParaView'
> > Subject: Re: [Paraview] Suggested format for open unstructured CFD
> > including surface geometry?
> >
> > Ensight is quite a common format. However I would be very interested
> > in having a Fieldview-Reader for Paraview...
> >
> > Regards BastiL
> >
> > A. Austen schrieb:
> > > Hello all.
> > >
> > > I'm interested in using ParaView to view unstructured CFD solutions.
> > > I'm currently using a proprietary flow solver which outputs results
> > > in FieldView-Unstructured format. The nice thing about that format
> > > is that it allows the inclusion of not just the solution grid, but
> > > also all the boundary surface geometry.
> > >
> > > However, I'm not crazy about being stuck with FieldView as my only
> > > option, so I'd like to write a translator to output an equivalent
> > > dataset in a more open format. I've looked at CGNS, but it expects
> > > the user to link to external CAD files to provide the surface
> > > geometry. Is there a recommended file format supported by VTK that
> > > is well-documented which includes the capability to include the
> > > surface geometry as a triangular surface mesh? The geometric body
> > > definitions in my existing FieldView-Unstructured files consist of
> > > triangular surface meshes, a la FACET or STL, and in fact starts out
> > > as a FACET input into the flow solver.
> > >
> > >
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