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OpenFAST / openfast

Main repository for the NREL-supported OpenFAST whole-turbine and FAST.Farm wind farm simulation codes.
http://openfast.readthedocs.io
Apache License 2.0
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Applicability of the document #2278

Open yinghanguan opened 1 week ago

yinghanguan commented 1 week ago

I am looking at the document FASTLoads.doc of the ElastoDyn module in openfast. The meaning of the symbols and the standard of the coordinate system are unclear, so I cannot understand the derivation of the formula. Can you provide some information to help me understand it?

jjonkman commented 1 week ago

Dear @yinghanguan,

If you haven't already, I would suggest studying the Unofficial ElastoDyn Theory Manual documents in the order listed here: https://openfast.readthedocs.io/en/main/source/user/elastodyn/index.html. For example, the coordinate systems are explained in document # 2. FASTLoads.doc is document # 5, which can't really be understand without first understanding documents # 1-4. Unfortunately, we have not yet been budgeted to formalize these documents into an official ElastoDyn Theory Manual.

If you have a specific question, please ask, but we can't describe all variables without a budget to formalize the official ElastoDyn Theory Manual.

Best regards,