Axial Induction formulation in FLORIS

[windexplorer21]

Hello everyone,

I am trying to understand what formula is implemented in FLORIS for calculating axial induction. I have investigated the get_turbine_ais() function but have not been able to grasp how this value is actually calculated.

If anyone could provide clarification or guidance on how FLORIS performs this calculation, I would greatly appreciate it.

Thank you in advance for your help.
windexplorer21

[misi9170]

Hi @windexplorer21 ,

Thanks for the question and for trying to take a look at it yourself! The axial induction calculations are buried fairly far down in the code, on operation_models.py.

There, you'll see that there are various different turbine operation models, each of which can implement its own calculation of the axial induction factor in its axial_induction() method. For example, here is the axial induction calculation for the SimpleTurbine operation model. You'll see that the axial_induction() method first calls thrust_coefficient() to get the thrust coefficient value, and then computes the axial induction factor from that.

Cheers,
Misha

[windexplorer21]

Dear @misi9170,

Thank you for the quick reply! I appreciate the guidance on where to find the axial induction calculations in operation_models.py. I'm currently working with a CosineLoss turbine and found exactly what I was looking for in the code.

Thanks again for your help!

Best,
@windexplorer21

[misi9170]

Great, glad to help!