I am highly grateful of you Ken, because of your guidance and aids.
I have been succeeded to get stream line by "Delaunay 3D" and "Stream tracer"
filter.
also, my purpose of getting the stream lines is obtaining an eulerian image of
my model to get more details.
and another question: Could i apply specific filters for cell data such as
contour, if i use the "Delaunay 3D" filter?
On Thursday, May 15, 2014 7:34 PM, "Moreland, Kenneth" <[email protected]>
wrote:
(Responding back to the mailing list so everyone can see the answers.)
If I understand your response correctly, your data is a collection of
particles. ParaView cannot immediately create streamlines from these data
because most of volume is empty space. I assume you have velocity for the
particles, but everything that is not exactly on a particle has an undefined
velocity.
You could estimate the velocity everywhere by imposing a mesh on top of the
particles. The most straightforward way to do this is to run the Delaunay 3D
filter.
I have to say, though, I'm still confused about why you want to do this. You
are asking ParaView to estimate the velocity field and then estimate a particle
advection on that velocity field. That sounds extremely inaccurate compared to
particles the simulation as advected in the first place. I would expect the
pathlines filter to give a much better representation of the flow.
-Ken
From: Maryam <[email protected]>
Date: Wednesday, May 14, 2014 4:29 PM
To: Kenneth Moreland <[email protected]>
Subject: [EXTERNAL] Re: [Paraview] generate streamlines of lagrangian particles
Yes, i have the 3D cylindrical fluid that have been modeled with lagrangian
particles. And the data format is VTK.
Sent from my iPad
On May 15, 2014, at 2:48 AM, "Moreland, Kenneth" <[email protected]> wrote:
I'm definitely missing something, because making streamlines on a vector field
should just work. Can you describe your data? For example, do you have a volume
made up of 3D cells? Do you have a bunch of particles moving around in space?
>
>
>-Ken
>
>
>From: Maryam <[email protected]>
>Date: Wednesday, May 14, 2014 4:05 PM
>To: Kenneth Moreland <[email protected]>
>Subject: [EXTERNAL] Re: [Paraview] generate streamlines of lagrangian particles
>
>
>
>Yes, i want the stream tracer but when i apply this filter or particle tracer
>filter they do not work.
>
>Sent from my iPad
>
>On May 15, 2014, at 2:27 AM, "Moreland, Kenneth" <[email protected]> wrote:
>
>
>I don't understand what you mean by that. If you mean you want the streamlines
>that treat the vector field as a static field at a particular time step, use
>the Stream Tracer filter. It's on the common filters toolbar. If you mean you
>want the traced streams up to that point, then step your current setup with
>the Temporal Particles ToPathlines filter to the step you want.
>>
>>
>>-Ken
>>
>>
>>From: Maryam <[email protected]>
>>Date: Wednesday, May 14, 2014 3:53 PM
>>To: Kenneth Moreland <[email protected]>
>>Subject: [EXTERNAL] Re: [Paraview] generate streamlines of lagrangian
>>particles
>>
>>
>>
>>Thanks for reply ken
>>But i want to have the streamline in a certain time step.
>>
>>Sent from my iPad
>>
>>On May 15, 2014, at 2:16 AM, "Moreland, Kenneth" <[email protected]> wrote:
>>
>>
>>Attach the Temporal Particles To Pathlines filter to the output of the
>>Particle Tracer.
>>>
>>>
>>>-Ken
>>>
>>>
>>>From: Maryam <[email protected]>
>>>Reply-To: Maryam <[email protected]>
>>>Date: Wednesday, May 14, 2014 3:32 PM
>>>To: "[email protected]" <[email protected]>
>>>Subject: [EXTERNAL] [Paraview] generate streamlines of lagrangian particles
>>>
>>>
>>>
>>>hi all,
>>>
>>>does somebody know how to generate streamlines of lagrangian particles?
>>>I execute the following steps:
1. add the temporal cache filter
2. add a line source for seeds
3. add a ParticleTracer filter
I only see the starting points, no tracing occurs.
>>>
>>>thanx al
>>>Maryam
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>_______________________________________________
>>Powered by www.kitware.com
>>
>>Visit other Kitware open-source projects at
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>>Please keep messages on-topic and check the ParaView Wiki at:
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>>
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