ActuatorDiskFromPower:
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Compute actuator disk area and power coefficient.
Uses actuator disk theory.
This provides a limit on how much power a wind turbine can produce.
"a" is defined from the relationship v3 = v0*(1 - 2*a) where v0 is the
wind speed in front of the machine and v3 is the wind speed at the end
of the wake. Note that v3 = 0 is NOT the optimum value. The optimum
value is with a = 1/3 so cP = 16/27. This can never be achieved in
practice due to aerodynamic losses.
Type ActuatorDiskFromPower for a demo.
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Form:
[A, cP] = ActuatorDiskFromPower( rho, p, eff, v0, a )
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Inputs
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rho (1,1) Atmospheric density (kg/m^3)
p (1,:) Power (W)
eff (1,1) Efficiency
v0 (1,:) Wind velocity (m/s)
a (1,1) See above
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Outputs
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A (1,1) Blade area (m^2)
cP (1,:) Power coefficient
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Reference: Wortman, A. J., "Introduction to Wind Turbine Engineering,"
Butterworth Publishers, 1983, pp. 3-4.
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Children:
Common: Graphics/Plot2D