how to write torque (of pump rotor) to file automaticly? (CFX)

yuhai · February 28, 2012, 11:55

hallo, dear friends,
I am trying to find a way to write out the value of torque on a rotor, for each time step (from the third rotation to end of simulation), to a .txt file. (it would be much better, if i can get a time-averaged value for it by the end.)

I hope that could be done in an automatic way, that means, it could be done with a command-line command, or just by settings in the .def file. Because I need to do hundreds of simulations, and I don't want to do this each time by hand.

Can you give me some ideas? must I use User-Fortran? or just some settings in CFX-PRE?

(I am using CFX, transient)

Thanks in advance!

ghorrocks · February 28, 2012, 17:22

The tutorials include an example of how to do something similar. Have a look at the immersed solid example.

Alternately you can write it to a monitor point and use cfx5mon (I think that's the right command, better check it) to extract it. Then a simple batch/script file can process it and produce whatever information you want.

yuhai · February 29, 2012, 10:18

Thank you Glenn,
the command is cfx5mondata -res CFX_029.res -varrule "CATEGORY = USER POINT" -out aaa

February 28, 2012, 11:55	how to write torque (of pump rotor) to file automaticly? (CFX)	#1
yuhai Member Hai Yu Join Date: Mar 2009 Location: Harbin Posts: 67 Rep Power: 17	hallo, dear friends, I am trying to find a way to write out the value of torque on a rotor, for each time step (from the third rotation to end of simulation), to a .txt file. (it would be much better, if i can get a time-averaged value for it by the end.) I hope that could be done in an automatic way, that means, it could be done with a command-line command, or just by settings in the .def file. Because I need to do hundreds of simulations, and I don't want to do this each time by hand. Can you give me some ideas? must I use User-Fortran? or just some settings in CFX-PRE? (I am using CFX, transient) Thanks in advance!

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February 28, 2012, 17:22		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,700 Rep Power: 143	The tutorials include an example of how to do something similar. Have a look at the immersed solid example. Alternately you can write it to a monitor point and use cfx5mon (I think that's the right command, better check it) to extract it. Then a simple batch/script file can process it and produce whatever information you want.

February 29, 2012, 10:18		#3
yuhai Member Hai Yu Join Date: Mar 2009 Location: Harbin Posts: 67 Rep Power: 17	Thank you Glenn, the command is cfx5mondata -res CFX_029.res -varrule "CATEGORY = USER POINT" -out aaa