[Halle]

Hi!

I am running an optimzation and export a User Point for my objective function via the cfx5mondata-command. When I only need the monitor-point-value for the last time step this is pretty straight forward and works fine.

I, however, want to do a transient simulation and export the minimum value of my monitor point within a certain timestep range. My idea was to use the Monitor Statistics of CFX 16.0 but the cfx5mondata-command doesn't find "USER POINT,<myvariable> (Minimum)". ("USER POINT,<myvariable>" worked)

Can I export a derived variable with cfx5mondata and if so, where can I find the correct name of this variable?

Thanks in advance!

[ghorrocks]

I would export the full monitor point history and do it externally to CFX in python or matlab or something.

[Halle]

Thanks a lot for your reply!

In the meanwhile I used the showvars-command and found that correct name for the monitor is "USER POINT,<myvariable>,,,Minimum".

I'm sure your proposal would have worked as well but I'm glad I got away the easy way.

[-Maxim-]

Originally Posted by Halle

In the meanwhile I used the showvars-command and found that correct name for the monitor is "USER POINT,<myvariable>,,,Minimum".

Hi Halle,
I am running into the same problem. I would like to export my user points including the "derived variables" (minimum, maximum and average) of my monitor points.
The -showvars command doesn't show those derived variables, though

(For steady state calculations I just export the last iteration with the -lastvaluesonly which works great.)

Could you please post your full syntax of that minimum/maximum command? Are there 3 commas before Minimum?

Thank you for your help

[-Maxim-]

I think I got it. I already have to define the statistics in CFX-Pre. This only works with expressions, though, and not with 'Cartesian Coordinates'. And of course that is what I was trying to do. I would like to monitor the absolute pressure at certain fixed points. CFX-Post has 'probes' for that.
I hope I can find a similar function in Pre...

edit2: my workaround so far:

1. create source point with specified Cartesian coordinates
2. create expression: probe(Absolute Pressure)@sourcepoint
3. create monitor point with expression
4. check monitor statistics, include Arithmetic Average, Maximum and Minimum and select Timestep Interval

I'll check if that works over night. I will edit this post in case it didn't work