Hello,
I want to see the streamlines in Paravie using COMSOL data. I export data as VTK (please see attached files). The streamlines look fine in my COMSOL sample file but I can not see the streamlines in Paraview after I load data in Paraview. The tracer filter is greyed out.
Velocity or temperature contours are working properly tho on a 2D plane.
I appreciate any tips.
Please share your data (ki.vtu)
I am not able to share data as it is confidential.
You may want to reach out to Kitware to set up a NDA then: https://www.kitware.com/
I am afraid that it is not an option for now.
Are you aware of a specific data format that ParaView needs to process data?
Or any other tips that I could check on my end?
To utilize the Stream Tracer filter, it is necessary to construct a velocity vector. This can be accomplished by employing the Merge Vector Components filter to combine the three component variables of velocity present in the data.
Thank you for your response.
I considered the Merge Vector Components filter and the stream tracer is now visible.
However, I don’t find the streamlines correct. In fact, I want to select my 6 inlets and then see how the streamlines would be inside the fluid domain. Not sure what I see as streamlines right now and how to increase the number of streamlines (not length)
Is there a way to select a specific surface or surfaces and see how the streamlines would evolve from there?
Thank you for your time.
To create streamlines from a specific location, you typically use the Stream Tracer With Custom Source filter. (See link below:
16. Targeted: Computational Fluid Dynamics — ParaView Documentation 5.12.0 documentation)
Since actual data is lacking, I cannot provide a more precise method, but a typical approach involves the following steps:
Extract Selection filter.Stream Tracer With Custom Source filter.I am not sure what data format you are using, but it is most likely not supported by ParaView. You need to provide a file format that ParaView supports.
It is .dat file.
Check the file format of the .dat file. If ParaView does not support this file format, it will be unable to read it.
design115CombinedFluid.843_SOLID.vtk.vol.600.vtu (272.4 KB)
Hi,
Would you be able to use the attached VTK file and show me how to select the inlet and have the streamlines?
Thank you
Also, when I watch this video (https://www.youtube.com/watch?v=7WMaHXLK6No) starting 20.07,
I am not able to select points from the inlet surface.
Thank you for your time.
Adding to my previous comment:
I have 6 similar domains as the shared VTK file which I grouped them with my main fluid domain. The issue is about extractselection function. I am not able to define points only on the inlet surfaces. It selects other points around the inlets. Any thoughts?
If you’re having difficulty selecting points, consider using the Line in the Stream Tracer filter to define the starting points for the streamlines.
Thanks for the input.
Were you able to have the streamlines using the suggested method (using line)?
I am not able to show
