QTF Standing (Newman) Approximation #1461
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akeeste
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Apr 16, 2025
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akeeste
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Thanks @MShabara
I added a few minor suggestions on the documentation updates.
Primarily, I have a couple of questions on the calculations added in the bodyClass.m. I'm referencing slides you presented last year on the Newman approximation but see some differences.
Additionally:
- Yes, the warning to catch mean drift and QTF at the same time is included.
- Simulink GUI is not yet updated for QTF=2. It should be a quick addition to the drop-down menu
Co-authored-by: Adam Keester <72414466+akeeste@users.noreply.github.com>
Co-authored-by: Adam Keester <72414466+akeeste@users.noreply.github.com>
Co-authored-by: Adam Keester <72414466+akeeste@users.noreply.github.com>
Co-authored-by: Adam Keester <72414466+akeeste@users.noreply.github.com>
Co-authored-by: Adam Keester <72414466+akeeste@users.noreply.github.com>
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This PR adds the Newman approximation for the slowly varying component for the second order excitation forces.
The option is enables by enabling
body(i).QTFs = 2The calculation was validated against openFAST and OrcaFlex for a spar model related to a FOWT as shown in the figure below:
