JensenAngle | R Documentation |
x
, computes the wake cone generated by a turbine.In Jensen's wake model, a wake cone is generated by a turbine based on the turbine's hub height z, its rotor radius r_0, the terrain's roughness length z_0 and the distance x between the turbine under investigation and a certain second point. z, r_0 and z_0 are taken from the FarmVars
settings object, while x is to be provided.
JensenAngle(x)
x |
must be a single value. Provide distance in meters. |
If a second turbine (B) is in a first turbine (A)'s wake, turbine B's power output must be penalized due to turbulence. This can be performed via Jensen's wake model, but first, it should be checked whether B is actually in A's wake. This function computes the angle of the wake cone generated by turbine A. This can be used together with function JensenTrapezoid
PointInPolygon
and to see if B is in the wake of A.
JensenAngle
returns the (onesided) angle of the wake cone generated by a turbine for distance x
.
Carsten Croonenbroeck
Jensen, N. O. (1983). A note on wind generator interaction. Roskilde: Risø National Laboratory. Risø-M, No. 2411
JensenTrapezoid
to check whether there are wake effects present. FarmVars
for the data object.
JensenAngle(500) ## For a distance of 500 m, the function returns a wake cone angle of 9.2233 degrees ## (given standard values for z, z_0 and r_0 in the FarmVars settings object).
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