[Paraview] ParaView Digest, Vol 95, Issue 91

Wed Mar 28 09:23:51 EDT 2012

Hi Lorenzo,

I assume you are using OpenFOAM based on your previous questions. The command 'wallGradU -latestTime' will give you the gradient of the velocity at the wall. This vector can then be used as input for the surfaceLIC representation to create oilflow like images. I am not sure if surfaceLIC works on all type of cells. In older versions of paraview I needed to convert my structured surface mesh to triangles first using the filter tetrahedralize.

Koen   

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Sent: 28 March 2012 14:13
To: paraview at paraview.org
Subject: ParaView Digest, Vol 95, Issue 91

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Today's Topics:

   1. Re: Oilflow - Surface flow (Lorenzo)

----------------------------------------------------------------------

Message: 1
Date: Wed, 28 Mar 2012 15:12:22 +0200
From: Lorenzo <lovecraft22 at gmail.com>
Subject: Re: [Paraview] Oilflow - Surface flow
To: Richard GRENON <richard.grenon at onera.fr>
Cc: "paraview at paraview.org" <paraview at paraview.org>
Message-ID: <691B4F99-2264-46B8-9C7A-937262CF556E at gmail.com>
Content-Type: text/plain; charset="windows-1252"

Thank you Richard.

Maybe I'm missing something but I don't get anything?
Once I've built the vector as U_X*iHat+U_Y*jHat+U_Z*kHat with the calculator, what should I do? Also, as my velocity is 0 on the surface, I think this vector I built equals (0,0,0) everywhere? Isn't it?

Il giorno 28/mar/2012, alle ore 14:58, Richard GRENON ha scritto:

> Hello.
> 
> For an oilflow visualisation you should use the "Surface LIC" view mode.
> 
> First, you have to load this plugin at first start of Paraview: menu "Tools -> Manage plugins", select the "SurfaceLIC" plugin, and press the "Load selected" button as on image 1. You may also want to select the + sign before the "SurfaceLIC" line to show its sub-options and select "Auto load". Then you will not have to load the plugin again each time you start Paraview.
> 
> Then you need to build a surface object having a vector variable. If you have only scalar components vx, vy, vz of the vector, use the Calculator Filter to build the vector from its components writing a formula such as vx*iHat+vy*jHat+vz*kHat.
> 
> Then select the SurfaceLIC representation as on image 2
> 
> You also may want to set some LIC parameters in the Display tab of the selected object such as the vector variable to be used or other parameters.
> 
> Richard.
> 
> --
> Richard GRENON
> ONERA
> Departement d'Aerodynamique Appliquee - DAAP/ACI
> 8 rue des Vertugadins
> 92190 MEUDON - FRANCE
> phone : +33 1 46 73 42 17
> fax   : +33 1 46 73 41 46
> mailto:Richard.Grenon at onera.fr
> http://www.onera.fr
> 
> <SurfaceLic_1.png><SurfaceLIC_2.png>

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