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IEAWindTask37 / IEA-15-240-RWT

15MW reference wind turbine repository developed in conjunction with IEA Wind
Apache License 2.0
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Question about IEA-15-240-RTW v1.1.11 #203

Closed achilleas101 closed 2 months ago

achilleas101 commented 2 months ago

I just downloaded version 1.1.11 of IEA-15-240-RTW and stumbled upon something I cound not understand in the IEA-15-240-RWT_tabular.xlsx. The Pitch-Wind speed plot in the .xlsx is not the same as in the 15MW wind turbine documentation found here.

2 Figure 1: Pitch-Wind speed from older version

1 Figure 2: Pitch-Wind speed from v.1.1.11

Am I missing something important? What is causing such a drastic change of values? Should I use these values as initial conditions in the ElastoDyn input file or stick to the old ones?

Thank you for your time and patience in advance!

gbarter commented 2 months ago

Good catch! The conditioning of the pitch optimization was poor near cut-in when power was near zero, so that caused things to go awry. Not sure why that appeared now vs earlier. PR #204 will fix the issue.

In general, we do not expect a perfect match with results published in the original report due to fixes in the design and evolution of the modeling tools.

achilleas101 commented 2 months ago

All right, I understand. Thank you again for your guidance!