I am reproducing the simulation of the NREL 5MW baseline wind turbine with a monopile support.
In other forums, I could find the source code named “UserPtfmLd_CS” which allows to input the additional platform stiffness.
So, I have complied FAST v7.02 with this code without any errors and run the program, but results can not be presented due to the divergence of platform motions.
After the 0.138 sec, the results were not able to be presented.
In this simulation, all input files are the same with “NRELOffshrBsline5MW_Monopile_RF.zip” from wind.nrel.gov/public/jjonkman/NR … Bsline5MW/.
The modifications that I made are that ;
- FAST v7.02 is complied with the source code named “UserPtfmLd_CS”.
- I turned on the Platform DOF in surge, sway, roll and pitch directions in FAST PLATFORM FILE.
- I changed PtfmLdMod to 1 for a user-defined from routine UserPtfmLd in FAST PLATFORM FILE.
I tried to change the mode shapes of tower obtained from BMODES with inputs from "http://wind.nrel.gov/public/jjonkman/BModes/ ". But the results are still not available.
My question is
Is there any other modifications required to simulation of Coupled Spring foundation model?