How do I estimate the exact location for the tower node guages as mentioned in the image. I am using FAST v7 with the OC3 monopile with AF model.
Thanks
Subham
Dear @Kashyap.Subham,
The elevations of the TwrGagNd locations in FAST v7 (and ElastoDyn in FAST v8 and OpenFAST) are documented in the old FAST User’s Guide: https://openfast.readthedocs.io/en/main/_downloads/d8bd014121d6505cb25cf49bee5eaa80/Old_FAST6_UsersGuide.pdf.
Best regards,
Sir,
Confusion arises when I use the apparent fixity models for oc3 project since the entire tower is effectively taken as the tower + platform + the apparent fixity length.
For the apparent fixity case, where does the TwrBsMyt measure the moments along the entire length?
Thanks
Subham
Dear @Kashyap.Subham,
If you are modeling the entire support structure (tower + monopile, including apparent fixity) via the tower in FAST v7, then the tower-base moment output (TwrBsMyt) is located at the clamped end of the apparent fixity pile (likely not a useful output). In this case, if you want to output the loads at the actual tower base or at the seabed, I would use the loads available at the tower gage locations.
Best regards,