I’m currently working on my master thesis, and as a part of this projekt, I need to simulate the response of a TLP FOWT, for this i want to use FAST/HydroDyn. However, since I have never used FAST before, I am currently trying to figure out how the software works.
For now, i’m looking into the HydroDyn sample project NRELOffshrBsline5MW_MIT_NREL_TLP_HydroDyn, just to get a hang on this part of the software.
I have gotten the sample project to run, however, even though i am able to extract the time series for the irregular waves (which looks correct), the displacement of the TLP is not affected by these waves. In the simulation the TLP has a constant displacement, which corresponds to the uWAMITInSteady values, defined in the driver file.
Is it me who has misunderstood how HydroDyn is to be used, or is there a setting somewhere, where i can state that the irregular waves should have an affect on the TLP’ displacement?