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Some doubt on different velocity graphs
Dear David:
I would like to know the meaning of “Inflow Velocity (w/o Induction) Blade 1 [m/s]” and “Velocity induced from Wake Blade 1 [m/s]”. What is the difference between them? Do you have some illustration documents about these outputs?
Yours sincerely,
Chen
15/01/2025
Hi Chen,
at each aerodynamic blade panel, the velocity (V_total) that is used to evaluate the angle of attack (AoA) and calculate the lift and drag forces is obtained from:
V_total = V_induced + V_motion + V_inflow
where V_induced is the velocity induced by the rotor wake at the position of the panel, V_inflow is the freestream wind velocity at the panels position and V_motion is the velocity contribution from the motion of the blade.
- Inflow Velocity (w/o Induction) Blade 1 [m/s]: This is V_inflow in the equation above.
- Velocity induced from Wake Blade 1 [m/s]: This is V_induced, the velocity induced from the rotor wake.
BR,
David
