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lucasschn / dstoolbox

DSToolbox aims at creating a framework for the analysis of Dynamic Stall based on experimental data. The experimental data might be produced using an airfoil describing different type of motion, especially pitching and ramping up.
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Dynamic stall should be considered in time, not angle #2

Open lucasschn opened 4 years ago

lucasschn commented 4 years ago

Dynamic stall angle for r>0.05 is not well defined because maximum in CC occurs when the ramp has already stopped growing (alpha=30°).

However, we could look at the time elapsed between the passage of static stall angle and the max in CC.

lucasschn commented 4 years ago

There are two definitions of t_ds, from t0 or from t=0.

lucasschn commented 4 years ago

The time elapsed between static and dynamic stall angles follows a consistent decay with the pitch rate. image

lucasschn commented 4 years ago

Now we should investigate how this related to the value of Tp and Tf. These constants should be tuned manually for all these cases.