NREL 5MW Rotor Geometry

Wind & Water Rotor Aerodynamics
21

Dear @Yao.Tian,

Being a reference wind turbine, there are many publications showing simulation results of the NREL 5-MW baseline wind turbine. Can you clarify what type of simulations you are considering?

The NREL 5-MW baseline wind turbine is not a real turbine, so full-scale measurements do not exist. There are many model-scale versions of the NREL 5-MW baseline turbine, where experimental data exist, but all of these have some variations relative to the original specification.

Best regards,

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22

Dear @Jason.Jonkman

Thank you for your reply. I am studying the distributed force of the blade, the deformation of the blade and the flow characteristics of the wind turbine wake under various operating conditions of the NREL 5MW wind turbine. I would be grateful if you could recommend me some widely cited papers, or provide some experimental data on the relevant part.

Best regards，

23

dear @Jason.Jonkman

I’ve found some papers, which are very useful. Thanks all the same.

Best regards

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24

can you send me a copy of them

25

For CFD, can you please provide, raduis, chord lenght, axis location, twist angle, pitch and what is the raduis of the wind turbine blade for CFD

26

I have made this table. Dear @Jason.Jonkman can you please confirm it?

77aea6a1-badf-4209-95e0-89f7ca04fe2a
77aea6a1-badf-4209-95e0-89f7ca04fe2a760×526 132 KB

27

Dear @Sijal.Ahmed,

It is hard to compare to values shared through a picture. The values in your table generally look correct, but I would suggest plotting the data on top of the data published by NREL.

Best regards,

28

These are exactly same value published by the your report. But only thing that I added is the pitch axis locatino from leading edge by interpolating for first four locations. Afterwards all airfoils are at 0.375 m from leading edge for the 1 m chord airfoils.
One more thing which is making me confused is that, people in litrature refer to raduis of 61.5 m (stations 17). so which one one is correct one I pasted above or last raduis is 61.5 m which actually makes the blade raduis = 63 m and diamter = 126 m

29

For CAD model we should follow this or the one given here
image

30

Dear @Sijal.Ahmed,

The difference between 61.5 m and 63 m is the hub radius of 1.5 m; i.e. the blade root starts at radius of 1.5 m.

Best regards,

31

Thanks. @Jason.Jonkman for clarification. I found some resources and they may be helpful.
First one is from Qblade 5 MW wind turbine example:

a
a1017×817 13.1 KB

b
b464×682 23.4 KB

The second reference is from SANDIA report
Definition of a 5MW/61.5m Wind Turbine Blade Reference Model by Brian R. Resor
SANDIA

The original reference model properties:

c
c562×736 43.1 KB

The model adjusted by the SANDIA

d
d621×879 65.6 KB

Please note that, pitch axis in orignal data is at 0.375 m for station no. 5 and onwards. While in SANDIA is 0.4 m (for 1 m chord airfoils, adjusted at 40% of chord lenght fo respective chord lengths)

32

@Jason.Jonkman Is it possible to publish design data (for CAD and CFD modeling) that is without any confusion?

33

Dear @Sijal.Ahmed,

Regarding a CAD or surface mesh for CFD simulations for the NREL 5-MW baseline wind turbine, see a similar question that was asked and answered in the following forum topic: NREL 5 MW - Blade Airfoils Data Files AR17.

Best regards,

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