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byuflowlab / FLOWUnsteady

An interactional aerodynamics and acoustics solver for multirotor aircraft and wind energy
https://flow.byu.edu/FLOWUnsteady/
MIT License
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Maneuver example informations #135

Closed MarcoPic99 closed 9 months ago

MarcoPic99 commented 9 months ago

Hi!

I was reading your eVTOL example, where you simulate a maneuver and i noticed that, for all the propellers, you read just one polar at a fixed Reynolds number. This means that the aerodynamics coefficients of the propellers are assumed constant during the maneuver, right? So, if i would take into account the aero coefficients variation i need to run xfoil or provide a different polar at each time step ? Or there is a different way to do that?

Thank you in advance!

EdoAlvarezR commented 9 months ago

Hi Marco! That is correct. The Reynolds number is assumed to be constant throughout the maneuver.

Currently, there isn't a clean way of providing different polars for different time steps, but it can certainly be done if you are brave enough to manually modify the polars at each time step inside a custom-defined runtime function.

MarcoPic99 commented 9 months ago

Thank you very much !

Marco