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Force integral for airfoil
Posted 12 gen 2016, 17:36 GMT-5 0 Replies
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I managed to create a rotary machine for a turbine in a water flow (two blades for now). The turbine has a constant number of rotations per second, omega.
I would like to derive the netto force on each blade and multiply it by the radius of the turbine, to get the netto torque on the turbine shaft per blade.
However, I am not sure how to do this.
We need a line integral (it's 2Dimensional) of the pressure over the blade, to get a representation of the netto force on the blade.
The problem is that the blade rotates and I don't know which expression is needed for the normal vector (material or spatial).
Anybody kind enough to elaborate on this?
Thanks in advance,
Hello Jorn Broers
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