Good day everyone,
I am trying to simulate DLC1.2 (power production, NTM, fatigue analysis). GL documentation suggests that 300 changes from Vrated to Vcutin (and vice versa) as well as 50 changes from Vrated to Vcutout (and vice versa) for one year period should be considered. I am using FAST to compute loads and to my knowledge there is no way to incorporate these speed changes into FAST directly. I would like to hear any suggestions on how to account for these speed switches in fatigue analysis.
Thank you for your help
Alexandra Seber
Modular Wind Energy, CA
We run lots of separate simulations. We use Perl scripts to create the input files and run them. We are working on a script that will run all (or a subset) of the DLCs for you, but it’s not ready for release. I hope we will be able to release it before the end of the year. We used to use older scripts (RunIEC and RunNTM), which are available on our web site (visit [url]National Wind Technology Center's Information Portal | Wind Research | NREL), but they are decidedly inferior to the new script and work with an old version of FAST. You can modify them for your needs if you can’t wait for the new script. You can get a freeware version of ActiveState Perl, which is what we use. You may also consider writing a script in MatLab, if that is a language your are more comfortable with. You can look at our Perl scripts to get an idea of a way to do it.
In addition to running jobs sequentially, the new script (also called RunIEC) can also submit jobs to a Windows HPC cluster for parallel processing. Our 240-core cluster can run an entire loads analysis in less than an hour by running hundreds of jobs in parallel.
Dear Marshall,
I am running some DLCs from the IEC standard for a 1.5 MW turbine to study the fatigue and ultimate loads, and the wind speed range is from 4 to 26 m/s in steps of 1 m/s. From your reply on this thread, could you kindly send me the new script RunIEC on my email please? My email ID is vishalsairam1995@gmail.com
Currently I am running separate openFAST simulations for each windspeed and it is proving to be cumbersome and very time consuming. I would be very grateful if you can send me this script.
Best regards,
Vishal Sairam
Dear Vishal,
Marshall Buhl has since retired from NREL. RunIEC and RunNTM are no longer supported at NREL, but I just sent you an e-mail.
Best regards,
Dear Jason,
I am on the same cross-path as Vishal. Could you please share the script where I can run the DLC 1.2? or if it is publically available please direct me to the location.
email:satwikbhat10@gmail.com
with regards
Satwik
Dear Satwik,
I just sent you an e-mail.
Best regards,
Dear Jason
I am also working on wind turbine fatigue calculation recently and I also need similar program above for FAST batch calculation. Could you please share the batch program such runIEC with me, if you can, I would be very grateful!
My email address：dongzhiyan1999@163.com
Best regards,
Zhiyan Dong
Dear @Zhiyan.Dong ,
I just sent you an e-mail.
Best regards,
Dear @Jason.Jonkman
I also need similar batch programs to do a lot of simulations. Can you share similar programs like runIEC.Thanks a lot.
My email address: 1598783459@qq.com
Best regards,
Dear @Lin.Ding,
I just sent you an e-mail.
Best regards,
Dear @Jason.Jonkman
Can you please share the scripts with me as well? I am doing research on the dynamic analysis of the 15 MW FOWT structural components and it would be great to have some examples of how to apply the load cases. My university email address is ibrahim.taze@unh.edu
Best regards,
Dear @Engin.Taze,
I just sent you an e-mail.
Best regards,
Dear @Jason.Jonkman
The mentioned program sounds interesting and useful, could you please share that with me when you are not very busy? Thank you for your kindness and precious time.
wbx1125666865@163.com
Best regards,
Dear @Baoxuan.Wang ,
I just sent you an e-mail.
Best regards,