CFD Online Logo CFD Online URL
Home > Forums > ParaView

How to move a slice following the particle coordinates (defined in a text file)?

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   August 6, 2014, 11:08
Default How to move a slice following the particle coordinates (defined in a text file)?
New Member
Bruno Guerrero
Join Date: Aug 2014
Posts: 4
Rep Power: 3
Bombacar is on a distinguished road
Hi everyone!

I would like to know how to define the origin property of a "slice filter" using a specific sphere's center (with its coordinates)?.

Until now, I am able to slice with the "slice filter" and I fix the values manually. But I would like a way to make it automatically. The goal is try to create an animation that only shows the intersection plane (that it moves with the choosen particle).

Some idea? Thanks in advance.
Bombacar is offline   Reply With Quote

Old   March 29, 2015, 11:10
Join Date: Aug 2012
Posts: 64
Blog Entries: 1
Rep Power: 5
Nucleophobe is on a distinguished road
Did you ever figure this our Bomcar? I'm trying to do the same thing.

You can do it with a programmable filter, but the details are a bit tricky. Here's some example code that does something similar:

I think the code above is supposed to create a slice through the center of an object independent of the object's location. So, if the object moves, the slice moves. We want to do the same thing, but the slice should be applied to the volume field data rather than the object itself.

Anyway, hope you were able to figure something out. I'll post back if I get results.

For my case, this script works. I am using Lagrangian particle cloud data to drive the position of a slice that cuts through the fluid domain. I apply the "Programmable Filter" to the Lagrangian data and run:
from paraview import simple
x = input0.GetPoints()[0][0]._Arrays[0]
y = input0.GetPoints()[0][1]._Arrays[0]
z = input0.GetPoints()[0][2]._Arrays[0]
print (x, y, z)
slice1 = simple.FindSource('Slice1')
slice1.SliceType.Origin = [x, y, z]
where 'Slice1' is the name of the slice that I am animating.

The only problem is the script fails to run in client-server mode, giving me the error:
TypeError: 'NoneType' object is not subscriptable
which basically means that the "Programmable Filter" isn't receiving any data... Anyone know how to fix this?

Last edited by Nucleophobe; March 29, 2015 at 17:59. Reason: Found a (partial) solution
Nucleophobe is offline   Reply With Quote


animation, paraview, slice

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
"parabolicVelocity" in OpenFoam 2.1.0 ? sawyer86 OpenFOAM Running, Solving & CFD 21 February 7, 2012 12:44
mesh airfoil NACA0012 anand_30 OpenFOAM Meshing & Mesh Conversion 12 December 12, 2011 05:16
ParaView Compilation jakaranda OpenFOAM Installation 3 October 27, 2008 12:46
DxFoam reader update hjasak OpenFOAM Post-Processing 69 April 24, 2008 01:24
error while compiling the USER Sub routine CFD user CFX 3 November 25, 2002 16:16

All times are GMT -4. The time now is 12:19.