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Old   October 19, 2021, 03:52
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Ismael Incoencio
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Sorry, stupid newbie question on Paraview.

I am running Windows and followed the instructions in the Reef3D Userguide and installed Paraview on both Ubuntu and Windows (same version).

Now my first question is, is it really necessary to connect to the ./pvserver in Paraview to access the files? I can already directly load the result files from C:\REEF3D\RUNS\8_13 Non-Breaking Wave Forces\REEF3D_CFD_VTU (yes, still using the tutorials) into Paraview without connecting.

This leads me to my next question, am I loading the aforementioned .pvtu group but when I hit play it always needs time to load between timesteps, with the status bar at the bottom of Paraview switching among:
1) blank when the results are loaded
2) XMLPUnstructured Grid Reader (xx%)
3) FileSeriesReader (100%)

It takes a little less than 1 second to actually show the next time step. Is this normal behavior when viewing datasets this large? I am running this on a Dell-G7-7500 Laptop at the moment, specs are:
Processor: i7-10750h CPU @ 2.6 GHz
RAM 16GB
6 Cores
12 Logical Processors
NVIDEIA GeForce RTX 2060
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Old   October 19, 2021, 08:21
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Hans Bihs
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Hi Ismael,

no need to connect to the ./pvserver.

The speed of Paraview depends on a combination of your hardware and the size of your computational domain. So yes, it can take some time to load the next time step. How large is your domain?
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Old   October 19, 2021, 10:38
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Since you are using Ubuntu on Windows, you need to use the pvserver to access data hosted on the Ubuntu partition through the windows interface.

This cross-access might also effect the processing speed.

One way (time-consuming) around this is to copy out the data from the Ubuntu partition to the Windows partition (ant folder that is outside the Ubuntu folder).

This might help, but generally the time taken to process the output files depends, amongst others, the number of cells, number of processors, computer speed etc.
It is quite normal that it takes a while for the simulation to "play" in Paraview.

I would recommend using File> Save animation and then saving output as jpg/png files so that you have the screenshots of all the time steps. You can can also create an avi video.

In summary, the speed you get for processing your results is quite normal.
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Old   October 21, 2021, 06:39
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Ismael Incoencio
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Hi Prof Hans, thanks for the feedback. I'm just using the 8_13 Non-Breaking Wave Forces tutorial, so the domain isn't that large; the definition is: B 10 0.0 18.0 0.0 3.0 0.0 1.0
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Old   October 21, 2021, 06:41
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Hi Arun, thanks for the feedback! I'm still learning the in's and out's of Paraview and CFD analysis. I will try outputting to an .avi as recommended if I need to view the animation.

As for the output, my data is already directly output to my C:/Reef3D/Runs folder.
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