Visualization large VTU files with Paraview

MFiX How to
#1

I am trying to visualize large VTU files generated by MFIX-TFM (singe file about 2.5G) , the Paraview crashed when I tried to read even a single VTU file. I did this on Joure2 using 40 GPUs , and increase the number of GPUs didn’t help. Anyone can provide a solution? Thanks!

#2

The quickest work-around is to only load the data you need when opening the files for post processing. Here, I’ve only selected the volume fraction:

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Then you can apply whatever filters you need (e.g., slice):
epg

If you want to show multiple variables at the same time (e.g., side-by-side), you can do individual variables, then glue the images together.

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#3

This works! Thanks Jordan!

#4

For future simulations, you can save fewer variables per vtu file. If you plan to visualize a slice, you can also define a planar vtk region to only save the slice in the vtu file. I haven’t tested the distributed IO with vtu files for a long time, so I am not sure how well it works. This would produce one vtu file per processor, so lots of small files that Paraview may be able to handle better.

#5

Thanks Jeff for your suggestion. I also tried and saved fewer variables in the VTU file. I found that the ParaView is happy with VTU files about 500M.

#6