Inclusion of MoorDyn, floating platform orientations, and general adjustments to OF v.4 - An effort to integrate FAModel to generate FAST.Farm input files.

[Yuksel-Rudy]

Changes to FFarmCaseCreation class includes:

1. the addition of phi as an input inside the wts table given to FFCaseCreation. This phi adjusts platform heading in ED (with an additional care for yaw_init), adjusts platform yaw reference value in HD, and MD is made sure has the unrotated fairlead coordinates in the local reference frame.

A high-level diagram of information flow is given here:

This update has the capability to generate a wind farm with their shared mooring systems as shown in this 2-turbine example:

Overall Updates

1. Adding MoorDyn input file (either in .fst files [individual MoorDyn files] or in .fstf file [holistic (or shared) MoorDyn file] based on a multi_MD flag in setTemplateFileName method. The same goes for multi_HD as well to allow platform-dependent HydroDyn files. The user should know beforehand whether a single or multiple input files are required and name the filenames accordingly.

2. Hydrodata related to the floater is copied and pasted to the case folder

3. Adding platform rotation as an additional input parameter

4. Converting sea state conditions from HydroDyn into SeaState module as per OpenFast version 4.0 and above.

5. Allowing copying files without ServoDyn.

6. Platform rotation is optional. If the user is simulating a fixed-bottom or land-based wind farm, they can turn the ptfm_rot flag off and that will zero off the phi value in the wind farm table.

[rthedin]

Some updates to this PR:

• The input dictionary containing the farm layout now takes the value phi_deg, related to the platform heading (given in degrees). If a single turbine takes phi_deg, a value should be specified for all turbines.
• The existence of phi_deg in the wts dictionary indicates platform rotation. No ptfm_rot input needs to be given
• Add support for HydroDyn, MoorDyn, and SeaState. Now these inputs can be passed to setTemplateFilename as entries to the templateFiles dictionary
  

  openfast_toolbox/openfast_toolbox/fastfarm/examples/Ex3_FFarmCompleteSetup.py

  Lines 99 to 101 in cd01113

  	'HDfilename' : None, # 'HydroDyn.dat', # ending with .T for per-turbine HD, .dat for holisitc
  	'MDfilename' : None, # 'MoorDyn.T', # ending with .T for per-turbine MD, .dat for holistic
  	'SSfilename' : None, # 'SeaState.dat',

To-do:

• Tests (including but not limited to paths set in some of the files, relative path, overall workflow)
• Clean up comments and minor details around the code.

[rthedin]

Hey Rudy - any updates regarding ongoing tests of this branch? Have you encountered any issues?

[Yuksel-Rudy]

Hello @rthedin. So far, I haven't had any issues with the new implementations. Feel free to merge how you see fit. We can branch out if/when we want to implement mooring system and bathymetry rotations later on.