How to average Fluent velocity over time in CFDPost?

kingjewel1 · June 13, 2018, 04:30

I have a transient case in Fluent for which I use "data sampling statistics" but when I open the case in CFD post, I cannot see the time.averaged variables. Anyone know what I'm doing wrong?/What button am I missing?

Gert-Jan · June 13, 2018, 04:43

This is the CFX-forum. I guess you'll have more success to get an answer in the fluent forum.

Nevertheless, I know the "Run Calculation" menu in fluent, has a button called "Data File Quantities" where you have control of what is saved to file. Don't you have to tell fluent to save those data.
Alternatively, In Post, some variables are more or less hidden since they are grouped. These groups are visible in the top of the list of variables that appears when you click on the button with the three "..."

Hope this helps.

kingjewel1 · June 13, 2018, 04:51

Quote:

Originally Posted by Gert-Jan

This is the CFX-forum. I guess you'll have more success to get an answer in the fluent forum.

Nevertheless, I know the "Run Calculation" menu in fluent, has a button called "Data File Quantities" where you have control of what is saved to file. Don't you have to tell fluent to save those data.
Alternatively, In Post, some variables are more or less hidden since they are grouped. These groups are visible in the top of the list of variables that appears when you click on the button with the three "..."

Hope this helps.

Hi Gert-Jan. I have already saved the data as you say in Fluent but no Transient.Variables appears in CFDPost. I can however see that there are different time-steps in the solution if i click on the little "clock" icon. It's strange, don't you think?

Gert-Jan · June 13, 2018, 05:04

I have no experience at all with transient fluent files in Post. Neither with Time averaged data. I refer to the Fluent forum.

Leonardo.flores · July 30, 2018, 02:27

I have the same problem, need to post process time sampling statistics and CFD Post doesnt show them...

Could you solve it??

The reason you might have different time steps in the clock button is because CFD Post loaded all the .dat files related to your case. Each .dat is different time step.

June 13, 2018, 04:30	How to average Fluent velocity over time in CFDPost?	#1
kingjewel1 Senior Member Join Date: Jul 2009 Posts: 260 Rep Power: 17	I have a transient case in Fluent for which I use "data sampling statistics" but when I open the case in CFD post, I cannot see the time.averaged variables. Anyone know what I'm doing wrong?/What button am I missing?

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June 13, 2018, 04:43		#2
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,831 Rep Power: 27	This is the CFX-forum. I guess you'll have more success to get an answer in the fluent forum. Nevertheless, I know the "Run Calculation" menu in fluent, has a button called "Data File Quantities" where you have control of what is saved to file. Don't you have to tell fluent to save those data. Alternatively, In Post, some variables are more or less hidden since they are grouped. These groups are visible in the top of the list of variables that appears when you click on the button with the three "..." Hope this helps.

June 13, 2018, 05:04		#4
Gert-Jan Senior Member Gert-Jan Join Date: Oct 2012 Location: Europe Posts: 1,831 Rep Power: 27	I have no experience at all with transient fluent files in Post. Neither with Time averaged data. I refer to the Fluent forum.

July 30, 2018, 02:27		#5
Leonardo.flores Member Leonardo Join Date: Nov 2017 Posts: 37 Rep Power: 8	I have the same problem, need to post process time sampling statistics and CFD Post doesnt show them... Could you solve it?? The reason you might have different time steps in the clock button is because CFD Post loaded all the .dat files related to your case. Each .dat is different time step.