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Add MIT yaw correction model (3rd pass) #924

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jaimeliew1
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@jaimeliew1 jaimeliew1 commented Jun 18, 2024

Add MIT yaw correction model (3rd pass)

This pull request implements an interpretation of the yawed actuator disk as described in Heck et al. (2023):
https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/modelling-the-induction-thrust-and-power-of-a-yawmisaligned-actuator-disk/3A34FC48A6BC52A78B6D221C13F4FC3A

The method assumes that $C_T'$ is invariant to yaw misalignment (an assumption still to be verified), and preforms a wind speed reduction based on the model equations.

Related issue

The structure of the code changes resembles those in the previous pull request (#638) , but now compatible with Floris V4.

Another older pull request can be found here (#624)

Impacted areas of the software

A new operation model is added mit_loss (name to be decided).

I added the code used to calculate the MIT operational model to floris/core/mit_models, but please move this to wherever you think is best.

Additional supporting information

An example has been modified to show the operational models at different controller operation points. The added model is able to transition from below-rated to above-rated wind speeds in a realistic manner as shown in the following figure. I.e. The power output is "clipped" near rated wind speed, and is invariant to yaw far above rated wind speed.
floris_power_loss

Test results, if applicable

Relevant tests are still to be added.

@paulf81
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paulf81 commented Jun 20, 2024

Thank you @jaimeliew1 for this exciting contribution! We'll start working on the review/merge soon!

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