Extract velocities in FNPF

akbrat · February 19, 2024, 09:16

Hi, Reef3D CFD has an option for writing velocities in a fixed point to file. I want to compare to Reef3D FNPF, but there it is not possible to extract, one has to watch the movie. Is there a way to read the movie file, and get numbers, so that it is possible to compare the velocities from the two programs?

Best regards,
Anne Katrine Bratland

harenaobsidet · February 19, 2024, 10:30

Hei, yes that is sadly currently not possible inside REEF3D.
However it is possible to use ParaView to get the velocity data for a point as a time series. You could place a probe (Filters/Data Analysis/Probe Location) at the position and then plot the data over time using Plot Data Over Time (Filters/Data Analysis/Plot Data Over Time). The resulting graph can then be saved as a .csv, with the value being located in the avg(variable) field.
Hope that helps.

valgrinda · February 27, 2024, 03:46

This feature will be part of the upcoming master release 24.02.

akbrat · February 27, 2024, 03:49

That is great!

valgrinda · March 1, 2024, 07:21

Now available in the new master 24.02. Also added a new tutorial case for REEF3D::CFD on how to use the probes for the case of 5th-order Stokes waves. See the User Guide, tutorial case 10.9.

February 19, 2024, 09:16	Extract velocities in FNPF	#1
akbrat New Member Anne Katrine Bratland Join Date: Oct 2023 Posts: 4 Rep Power: 2	Hi, Reef3D CFD has an option for writing velocities in a fixed point to file. I want to compare to Reef3D FNPF, but there it is not possible to extract, one has to watch the movie. Is there a way to read the movie file, and get numbers, so that it is possible to compare the velocities from the two programs? Best regards, Anne Katrine Bratland

February 19, 2024, 10:30		#2
harenaobsidet New Member Alexander Hanke Join Date: Dec 2023 Location: Trondheim Posts: 18 Rep Power: 3	Hei, yes that is sadly currently not possible inside REEF3D. However it is possible to use ParaView to get the velocity data for a point as a time series. You could place a probe (Filters/Data Analysis/Probe Location) at the position and then plot the data over time using Plot Data Over Time (Filters/Data Analysis/Plot Data Over Time). The resulting graph can then be saved as a .csv, with the value being located in the avg(variable) field. Hope that helps. __________________ Alexander Hanke Team REEF3D www.reef3d.com

February 27, 2024, 03:46		#3
valgrinda Super Moderator Hans Bihs Join Date: Jun 2009 Location: Trondheim, Norway Posts: 377 Rep Power: 17	This feature will be part of the upcoming master release 24.02. __________________ Hans Bihs Team REEF3D www.reef3d.com

March 1, 2024, 07:21		#5
valgrinda Super Moderator Hans Bihs Join Date: Jun 2009 Location: Trondheim, Norway Posts: 377 Rep Power: 17	Now available in the new master 24.02. Also added a new tutorial case for REEF3D::CFD on how to use the probes for the case of 5th-order Stokes waves. See the User Guide, tutorial case 10.9. akbrat likes this. __________________ Hans Bihs Team REEF3D www.reef3d.com

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February 27, 2024, 03:49		#4
akbrat New Member Anne Katrine Bratland Join Date: Oct 2023 Posts: 4 Rep Power: 2	That is great!