How to make Cp_Ct_Cq.txt

[YBLee02]

I made Rotor performance data file from CCBlade using IEA-15-240-RWT-UMaineSemi_ROSCO.yaml included to IEA-15-240-RWT Folder. But the data i made is not matched to original Cp_Ct_Cq.IEA15MW.txt.

I was wondering how to make the same Cp_Ct_Cq.IEA15MW.txt as the original file.

1. Original Cp_Ct_Cq.IEA15MW.txt

2. New Cp_Ct_Cq.IEA15MW.txt

Current behavior

I only revised path in the .yaml. In other words, i used the same fst, dat files as in the case of original Cp_Ct_Cq.IEA15MW.txt.

Code versions

• Python 3.11
• rosco 2.9.0
• wisdem 3.15.1

[ptrbortolotti]

Hello YBLee02, I've tried to replicate the table on GitHub and the one you've posted, and I could not replicate any of the two. The differences probably come from different versions of WISDEM (I'm on 3.15.3). The table is used by ROSCO "only" to tune the gains of the pitch controller, so small differences in the table are not going to change the dynamic of ROSCO all that much. You should be good to push ahead, but please let us know if you get stuck

[YBLee02]

Hi, ptrbortolotti. Thank you for your reply.

I have confirmed that Cp,Ct,Cq.txt vary depending on the WISDEM version.

In the future, I will test the rotor performance of Cp, Ct, and Cq.txt, which depends on the WISDEM version. Your comment helped me a lot.

Best regards.