NWTC

Sorry, that is outside the scope of what we usually need and not part of the reference turbine design. Similar to you, we also rely on MatWeb or other web searches.

Hi David, Due to limited time and funding, we did not do any fatigue analysis on the IEA Wind 15MW Reference Turbine (both monopile and floating variants). For controller pitch histories, we unfortunately no longer have the original DLC runs used for the turbine, so we advise users to generate their...

Hello Dagmara, Since Evan's last message, we have released a major update to WISDEM solidifying the changes he outlined. Things are also better described in our online documentation now. I suggest looking at examples 02 and 03 ( https://wisdem.readthedocs.io/en/master/examples.html ). You can also c...

Hello, The wind turbine yaml-based ontology file lists the materials for the components and also has a section for a material properties library. Material of the tower: https://github.com/IEAWindTask37/IEA-15-240-RWT/blob/openfast_dev/WT_Ontology/IEA-15-240-RWT.yaml#L464 Material of the bedplate: ht...

Hi James, We compute the cumulative elastic stiffness properties (EA) of the blade along the span. You can find this in the tabular data in the repo Documentation folder or even in the OpenFAST blade input files. Finding an equivalent Young's modulus isn't needed for the structural or aeroelastic an...

Hello James, Your question is a good one and a known deficiency in the initial release of the IEA Wind 15-MW Reference Wind Turbine. The drivetrain mass and material properties were not well documented and actually inconsistent between the report and various model implementations. We are drafting an...

Hi Bas, For the outputs, there should be a .mat, .npz, and .xlsx file that have the WISDEM outputs all listed. I acknowledge that the variable listing in long and it can sometimes be difficult to find what you are looking for. In the xlsx-file, you should definitely be able to search for terms such ...

Hello, Thank you for your interest in WISDEM. We have some relatively recent examples and documentation that should help you accomplish what you intend. However, this reply comes with a warning that just because you can scale a geometry, doesn't mean that you are working with an optimized design. To...

You can find those quantities in Table 5-1 in the IEA Wind 15-MW report. However, there is a known issue with the summation of the moments of inertia (see Github Issue here). I am working on a more reliable estimate, but it will be a bit before it is ready to go.

Hello Ramya, The design max tip speed of the IEA Wind 15-MW is 95 m/s. At standard atmospheric conditions, that is already a Mach number of about 95/340 = 0.279. So, it is quite reasonable that the relative velocity of the incoming flow at the tip can exceed Mach 0.3, especially in the floating case...

Hello Anton, Thank you for your question. You are correct that there is not a lot of documentation online, we will hopefully be addressing that in the future, but it is a slow process. To answer your questions: WISDEM is a steady-state analysis tool, so no fatigue loads are calculated and therefore ...