Dear all,
I am a MS student who is very new to OpenFAST. I’m trying to run the load case 2.2 with irregular waves and obtain similar results as the documentation. I’ve ran the simulation and put the .outb file in BEMRosetta to visualize the motions. I have shown my work to my professor but she said that the B1(DOF) and Ptfm(DOF) graphs should not be identical. I assumed that the B1 is Body 1 from HydroDyn and the difference is that since Ptfm is an output of ElastoDyn, the output motion should be influenced by the rest of the structure unlike HydroDyn. I’m not sure if this is correct. I can not figure out how I can fix this problem or if it is a problem at all. I’m sorry if this is a ridiculous question, I’m a bit lost. Below I have attached the graphs I have obtained for surge and heave but the other 4 DOFs are the same.
Thank you.