record/output values from rbstate expression

Standex · September 15, 2012, 08:55

Hi all and apologies if this has been covered. I'm fairly sure it will have been but haven't been able to find anything either on these forums or elsewhere. (if it has please point me in the right direction)

I'm running a transient simulation with a floating rigid body (2-Fluid, 4DOF) and as part of the analysis I am looking at its movement and rotation around two axis.

In order to do this I am using the rbstate function however I believe that this only works during the solve so cannot be used during post analysis. Using this method when I try to plot/export the expression values I get the error "The following unrecognised names were referenced:" followed by all words in the expression.

Is there a way I can save/export the expression values during each timestep while solving or is there another method which can be used to export the rigid body properties I am intersted in.

Cheers,

(Running CFX 14)

(Edited- rbstate expression ->rbstate function, used post analysis ->used during post analysis)

ghorrocks · September 16, 2012, 08:49

Yes, use a monitor point set to an expression, and set the expression to the CEL variable you want to watch. Then it is available in the sover manager as the simulation progresses.

Standex · September 16, 2012, 10:36

Cheers for the help ghorrocks, Unfortunately I dont think my question was clear.

My problem was that I hadn't realised that CSV data can be directly extracted from solver plots. (guess there isn't a way of plotting monitor point data in post).

Many thanks

ghorrocks · September 16, 2012, 19:45

No, you cannot plot monitor point data in CFD-Post. So monitor point data should be extracted as a CSV can be analysed using any mathematics package from there.

mystar · November 28, 2012, 03:45

Quote:

Originally Posted by ghorrocks

No, you cannot plot monitor point data in CFD-Post. So monitor point data should be extracted as a CSV can be analysed using any mathematics package from there.

You mean that Data of monitor point can be extracted in CFX - Solve manager ?

Brg

Lance · November 28, 2012, 05:22

One of the new features in 14.5 is that you now can plot monitor data in a chart in Post. It is still beta but it works as far as I know.

But yes, you can extract monitor data from the solver manager by right clicking in the monitor plot.

mystar · November 28, 2012, 21:40

Quote:

Originally Posted by Lance

One of the new features in 14.5 is that you now can plot monitor data in a chart in Post. It is still beta but it works as far as I know.

But yes, you can extract monitor data from the solver manager by right clicking in the monitor plot.

Thank you so much Lance, i already got it ...

September 15, 2012, 08:55	record/output values from rbstate expression	#1
Standex New Member Join Date: Sep 2012 Posts: 2 Rep Power: 0	Hi all and apologies if this has been covered. I'm fairly sure it will have been but haven't been able to find anything either on these forums or elsewhere. (if it has please point me in the right direction) I'm running a transient simulation with a floating rigid body (2-Fluid, 4DOF) and as part of the analysis I am looking at its movement and rotation around two axis. In order to do this I am using the rbstate function however I believe that this only works during the solve so cannot be used during post analysis. Using this method when I try to plot/export the expression values I get the error "The following unrecognised names were referenced:" followed by all words in the expression. Is there a way I can save/export the expression values during each timestep while solving or is there another method which can be used to export the rigid body properties I am intersted in. Cheers, (Running CFX 14) (Edited- rbstate expression ->rbstate function, used post analysis ->used during post analysis) Last edited by Standex; September 16, 2012 at 10:16. Reason: Corrected errors

September 16, 2012, 10:36		#3
Standex New Member Join Date: Sep 2012 Posts: 2 Rep Power: 0	Cheers for the help ghorrocks, Unfortunately I dont think my question was clear. My problem was that I hadn't realised that CSV data can be directly extracted from solver plots. (guess there isn't a way of plotting monitor point data in post). Many thanks Last edited by Standex; September 16, 2012 at 11:03. Reason: solved

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September 16, 2012, 08:49		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	Yes, use a monitor point set to an expression, and set the expression to the CEL variable you want to watch. Then it is available in the sover manager as the simulation progresses.

September 16, 2012, 19:45		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,872 Rep Power: 144	No, you cannot plot monitor point data in CFD-Post. So monitor point data should be extracted as a CSV can be analysed using any mathematics package from there.

November 28, 2012, 05:22		#6
Lance Senior Member Lance Join Date: Mar 2009 Posts: 669 Rep Power: 22	One of the new features in 14.5 is that you now can plot monitor data in a chart in Post. It is still beta but it works as far as I know. But yes, you can extract monitor data from the solver manager by right clicking in the monitor plot.