[Wind direction reference system]

Hi Lidia

 

WAsP uses geographical north direction. Read more about it at WAsP help, look for "Reference directions".

Regards

Alex

 

[Combining different Wind Atlases in the same format into one Wind Atlas]

Hello Shehan

You probably need a tool to combine 200+ wind atlases into one wind atlas. If you need DTU Wind to develop this application please contact our consultancy services.

[Combining different Wind Atlases in the same format into one Wind Atlas]

Hello Shehan

If you have LIB files for each "point" you can use the LIB interpolator tool in order to generate one wind atlas (LIB) for the entire region. In this tool you may prescribe your own weighting function or use the automatic weightings applied by the LIB Interpolator. The interpolated LIB file can be imported into WAsP and used like a normal wind atlas. Please read the LIB Interpolator help file for more information.

[IBZ+ΔRIX correction procedure]

Explaining IBZ + dRIX correction procedure:

From Predicted Climate at Mast position we obtain the following parameters:
U  also called U(IBZ) in the exercise
RIX
dRIX
Using the dRIX we obtain a prediction error, P, from the provided graph (in the exercise).
We apply the dRIX correction with expression: U(RIX) = U(IBZ) / (P+1)

Example: prediction of Mast 10 from Mast 6
U(IBZ) = 4.63
RIX = 13,4
dRIX = -20
P = ~21%
U(RIX) = 5.86

 

Regards

Alexandre