Transient Statistics Results in CFD Post

ashtonJ · October 27, 2014, 01:15

Dear all,
I am modelling a transient flow from t=0 to t=1[s] in an artery model.
I defined four transient statistics in CFX-Pre. Here is summary:

Transient Statistics 1: Arithmetic Average from over whole flow cycle (t=0 to t=1)
Transient Statistics 2: Arithmetic Average from t=0.2 to t=0.5 [s]
Transient Statistics 3: Arithmetic Average from t=0.5 to t=0.7 [s]

In CFD-Post, I can only see the Transient Statistics 1, Arithmetic Average over whole flow cycle. I can't see the results for Transient Statistics 2 and 3.

Does any body have any idea where the results of Transient Statistics 2&3 are saved?

Regards,
AshtonJ

JuPa · October 27, 2014, 04:48

How did you specify that the 2nd and 3rd transient statistic must start at 0.2 and 0.5 seconds respectively?

It might be a case that statistics 2 and 3 might not have been written because you haven't properly defined where they should start from. (You can give a start iteration list - but I'm not sure how these physically translate to simulation time).

ashtonJ · October 27, 2014, 06:48

Thanks RicochetJ.
My time step is 0.01, so I specified the iteration number corresponding to time 0.2 [s], which is 20 for this case. I am also confused with how to correlate the time with the corresponding iteration list!

October 27, 2014, 01:15	Transient Statistics Results in CFD Post	#1
ashtonJ Senior Member Ashkan Javadzadegan Join Date: Sep 2010 Posts: 255 Rep Power: 16	Dear all, I am modelling a transient flow from t=0 to t=1[s] in an artery model. I defined four transient statistics in CFX-Pre. Here is summary: Transient Statistics 1: Arithmetic Average from over whole flow cycle (t=0 to t=1) Transient Statistics 2: Arithmetic Average from t=0.2 to t=0.5 [s] Transient Statistics 3: Arithmetic Average from t=0.5 to t=0.7 [s] In CFD-Post, I can only see the Transient Statistics 1, Arithmetic Average over whole flow cycle. I can't see the results for Transient Statistics 2 and 3. Does any body have any idea where the results of Transient Statistics 2&3 are saved? Regards, AshtonJ

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October 27, 2014, 04:48		#2
JuPa Senior Member Mr CFD Join Date: Jun 2012 Location: Britain Posts: 361 Rep Power: 14	How did you specify that the 2nd and 3rd transient statistic must start at 0.2 and 0.5 seconds respectively? It might be a case that statistics 2 and 3 might not have been written because you haven't properly defined where they should start from. (You can give a start iteration list - but I'm not sure how these physically translate to simulation time).

October 27, 2014, 06:48		#3
ashtonJ Senior Member Ashkan Javadzadegan Join Date: Sep 2010 Posts: 255 Rep Power: 16	Thanks RicochetJ. My time step is 0.01, so I specified the iteration number corresponding to time 0.2 [s], which is 20 for this case. I am also confused with how to correlate the time with the corresponding iteration list!