CPvsTipSpeedRatio:

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   Compute the power coefficient as a function of tip speed.
   Can use an analytical approximation or emperical data.
   Thouch each wind turbine will be different, the emperical data in this
   function is typical.

   Type CPvsTipSpeedRatio for a demo.

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   Form:
   cP = CPvsTipSpeedRatio( lambda, method )
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   Inputs
   ------
   lambda     (1,1)  Tip speed ratio (r*omega/u)
   method     (1,1)  Method to compute lambda (optional)
                          1 = Analytical, default
                          2 = Empirical

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   Outputs
   -------
   cP         (1,1)  Power coefficient

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   Reference: Spera, D. A. (ed), "Wind Turbine Technology", ASME Press,
              1994, p. 220.
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Children:

Common: Graphics/Plot2D