Roger Bergua
Roger Bergua
**Bug description** When modeling a rigid platform in SubDyn (e.g., using rigid links and lumped masses), the buoyancy is not applied over the system and the structure sinks. First, it's...
**Bug description** I commented this issue in the past offline, but I leave it here for traceability. When modeling a rigid platform in SubDyn (e.g., defining a rigid link and...
**Bug description** I'm simulating a floating system in SubDyn and the behavior is not the expected one. The floater looks as follows:  The problem seems to come from the...
The current computation of self-weight in SubDyn results in unexpected weight contributions at the node locations. To illustrate this, one _easy_ model in SubDyn is used. The system is a...
**Is your feature request related to a problem? Please describe.** HydroDyn is able to account for the added mass up to the instantaneous free surface when using wave stretching. `----------------------...
**Bug description** Performing an eigenanalysis after running an OpenFAST linearization results in the wrong system eigenfrequencies for a rigid system. **To Reproduce** I'm illustrating this with a very easy example:...
SubDyn vs MoorPy: Differences in the linearized stiffness matrix for horizontal pretensioned lines
As part of the OC7 Phase II project, we are modeling a system with three -nearly horizontal- mooring lines. See below for reference:  The properties of these mooring lines...
I'm simulating one floating offshore wind turbine as follows: The floating plaform and tower (not shown in the above image) are modeled in SubDyn. For this numerical model, I use...
Current versions of OpenFAST allow to include the suction-side only viscous drag formulation. However, when looking at the input files (e.g., from r-test), the cut-off frequency appears as diminsionless: I...
As part of the OC7 Phase II project (floating offshore wind turbine with flexible substructure in SubDyn), we have started using OpenFAST dev-tc. We are running the same model with...