Difference between 2 timesteps

makaveli_lcf · November 2, 2009, 09:59

Hallo!

I'm trying to display in ParaView difference between fields values corresponding to 2 different time steps. I didn't find any solution. Would any one please give some tips how to do this. I found how to create shifted in time data using Time Shift Scale filter, but can not find easy way how to subtract those shifted values from current and display that.

I would really appreciate your help!
Best regards

t.oliveira · November 18, 2017, 16:33

Hi,

I wasn't able to do that using the Time Shift Scale filter either.

Now, there is another solution. ParaView 5.4.0 introduced a new filter called Temporal Array Operator that makes it easy to calculate the difference between field values corresponding to two different time steps.

Best regards,
Thomas

makaveli_lcf · November 20, 2017, 03:13

Hi Thomas,

thank you for the great tip, I will try it! Currently I was saving ddt(some_field) in my solver. Of course it is not a solution for the standard solvers of for old results.

Cheers,
Alexander

November 2, 2009, 09:59	Difference between 2 timesteps	#1
makaveli_lcf Senior Member Dr. Alexander Vakhrushev Join Date: Mar 2009 Posts: 250 Blog Entries: 1 Rep Power: 19	Hallo! I'm trying to display in ParaView difference between fields values corresponding to 2 different time steps. I didn't find any solution. Would any one please give some tips how to do this. I found how to create shifted in time data using Time Shift Scale filter, but can not find easy way how to subtract those shifted values from current and display that. I would really appreciate your help! Best regards __________________ Best regards, Dr. Alexander VAKHRUSHEV Christian Doppler Laboratory for "Metallurgical Applications of Magnetohydrodynamics" Simulation and Modelling of Metallurgical Processes Department of Metallurgy University of Leoben http://smmp.unileoben.ac.at

November 18, 2017, 16:33		#2
t.oliveira Senior Member Thomas Oliveira Join Date: Apr 2015 Posts: 114 Rep Power: 12	Hi, I wasn't able to do that using the Time Shift Scale filter either. Now, there is another solution. ParaView 5.4.0 introduced a new filter called Temporal Array Operator that makes it easy to calculate the difference between field values corresponding to two different time steps. Best regards, Thomas makaveli_lcf likes this.

November 20, 2017, 03:13		#3
makaveli_lcf Senior Member Dr. Alexander Vakhrushev Join Date: Mar 2009 Posts: 250 Blog Entries: 1 Rep Power: 19	Hi Thomas, thank you for the great tip, I will try it! Currently I was saving ddt(some_field) in my solver. Of course it is not a solution for the standard solvers of for old results. Cheers, Alexander __________________ Best regards, Dr. Alexander VAKHRUSHEV Christian Doppler Laboratory for "Metallurgical Applications of Magnetohydrodynamics" Simulation and Modelling of Metallurgical Processes Department of Metallurgy University of Leoben http://smmp.unileoben.ac.at

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