Reply To: Why Negative Moment – Wind Turbine – & Residuals

[Nate K.]

The moving on the blades does not seem to be the issue, as the angle of rotation is ever increasing (one way rotation so opposite of what the moment plot is describing), and the facet average-weighted tangential velocity plot also reflects one direction rotation with steady velocity or slight increase. The issue seems to lie with the moment plot... perhaps something to do with the assigning of the "rotor" and its three airfoils (although, if this was the issue, then how can the angle of rotation be in conflict with the moments?), or calculations behind the moment? Seems to be a disconnect in Fluent between the moments and actual rotation...

How I can check how the solver is defined? Is there a way to change just how moments are calculated / defined?

Got the moment axis of rotation down correctly (z axis). So yeah, knowing more about how the moments are based would be helpful. By any chance, can you look into this?