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Problem with Crunch - column reference

Posted: Tue Jun 18, 2019 7:43 am
by Carol.Videiro
Hi,

I'm trying to run Crunch, but it appears the following error:
"Your expression seems to be making an invalid data column reference"

Error_Crunch.png
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So, my question is about how it orders the columns. At the file .out, I think that column 1 is Time (s) and column 2 is Wind1VelX (m/s). Is this right ?

DLC.out.png
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Do I have to update all the column references in .cru file?

DLC.cru.png
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For instance, YawBrFxp is calculated as 1.35*C11, but at the file output YawBrFxp is in column 30.

Thanks

Re: Problem with Crunch - column reference

Posted: Tue Jun 18, 2019 7:44 am
by Carol.Videiro
For instance, YawBrFxp is calculated as 1.35*C11, but at the file output YawBrFxp is in column 30.

Column_reference.png
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Re: Problem with Crunch - column reference

Posted: Tue Jun 18, 2019 12:36 pm
by Jason.Jonkman
Dear Carol,

Regarding the "invalid data column reference" error, a similar question has been asked and answered in the following forum topic: viewtopic.php?f=4&t=2271&p=12859.

Yes, time is the first column and Wind1VelX is the second column in your example OpenFAST output file.

I'm not sure I understand your last question, but the channel numbers specified in the Crunch input file should match those of the OpenFAST output file. So, if you need to use the data in column 30, you should reference C30 in your Crunch input file.

Best regards,