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@akeeste akeeste commented Feb 8, 2022

This PR addresses project card https://github.com/WEC-Sim/WEC-Sim/projects/58#card-72526916
It adds minor doc updates to clarify how/when the mean drift force and waves.current options are used.

To my understanding mean drift and current each have one scenario they affect:

  • the mean drift is combined with the excitation force, if coefficients are included in the BEM data
  • the current speed is used to calculate a more accurate fluid velocity and acceleration in the Morison Element calculations

@akeeste akeeste added the Documentation related to docs label Feb 8, 2022
@kmruehl
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kmruehl commented Feb 9, 2022

@nathanmtom offered to review the current documentation. @yuyihsiang can you reviewthe mean drift documentation, or recommend someone else to review it?

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@akeeste Thanks for updating the documentation. Other than my two minor edits, this looks good from my end @yuyihsiang might have more comments on the mean drift description.

Also, we probably need to add cards to add to our documentation on this realization of the second order drift forces. @yuyihsiang can comment but not sure if we are solving the second order problem or using an approximation based on first order diffraction coefficients.

@nathanmtom
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@akeeste I got some initial feedback from Toan and his comment about the documentation was to change the mean drift force description as follows:

"The mean drift term can optionally be included if mean drift force coefficients are defined in the BEM data."

I think next week it would be worth having a short call with Toan to double check our implementation and discuss how we can expand our documentation on the mean drift implementation.

@akeeste
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akeeste commented Mar 1, 2022

  • add note that mean drift is only compatible with WAMIT right now
  • resolve conflicts

@kmruehl kmruehl merged commit 7a2efe2 into WEC-Sim:dev Mar 2, 2022
@akeeste akeeste deleted the doc_driftCurrentUpdates branch March 15, 2022 22:14
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3 participants