Definitions of root, joint, bos, and hub components

[mfekrysaidahmed]

Hi all I noted that there are some components that are not properly defined in the following manual: https://windio.readthedocs.io/en/latest/source/components.html

What are the bos, root and joint components? Are there any explanations for their fields? The explication of the hub fields does not include: `hub:

    flange_t2shell_t: 4.0
    flange_OD2hub_D: 0.5
    flange_ID2OD: 0.8
    hub_blade_spacing_margin: 1.2
    hub_stress_concentration: 2.5
    n_front_brackets: 3
    n_rear_brackets: 3
    clearance_hub_spinner: 0.5
    spin_hole_incr: 1.2
    pitch_system_scaling_factor: 0.54
    spinner_gust_ws: 70.0
    hub_material: steel #cast_iron
    spinner_material: ud

`

Can anyone provide me with some explanations?

Thanks in advance

[gbarter]

Hello and thank you for your interest and use of WindIO. At this point, what is in WindIO for hub and drivetrain description is not a true "ontology" or common parameterization. It is really just a copy-paste of inputs to WISDEM DrivetrainSE. You can look there for some info on the inputs, but please don't interpret them as a template that other codes should adopt. Better generalization and parameterization of the hub and nacelle components is on our long-term to-do list. It is still unclear what that will look like or if it will include hub-blade root connection details.

[ptrbortolotti]

Hello, as Garrett said, we'll have to work on the hub. As a small step, I unearthed the description of all those fields and they are now listed in the schema embedded in WISDEM, see here https://github.com/WISDEM/WISDEM/commit/bf1690932ff15b046dd43fa1e8bb070b3571450d

[mfekrysaidahmed]

Thank you all for your help