Structural design of the wind turbine blade

Discuss theory and modeling of wind-turbine structures.

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Shankar.Sarpate
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Structural design of the wind turbine blade

Postby Shankar.Sarpate » Tue Jul 20, 2010 11:36 pm

Hello Everybody,

I am recently joined this forum.

I am looking forward for the structural design procedure / data for the 61.5m wind turbine blade. Can anybody help me out by forward literature / documents on the structural design procedure?

Thanks & Regards,
Thanks & regards,
Shankar K. Sarpate,
Director,
E-Mobility & Renewable Energy Solutions, Pune,India
Mobile :+91 7758847732
Tel :+91 2114232191
Email: sksarpate@gmail.com

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Re: Structural design of the wind turbine blade

Postby Marshall.Buhl » Wed Jul 21, 2010 2:52 pm

Shankar,

Neither NREL nor Sandia (our sister lab) have tools to design blades. We have analysis tools, but none that will help you come up with a design. Our chief engineer suggests you contact an experienced consultant for help in designing a blade. I can think of two offhand, but would rather not mention them here. If you are interested in doing business with either, please let me know and I will contact them on your behalf.

Marshall
Mr. Marshall L. Buhl Jr.
NWTC-3811
National Renewable Energy Laboratory
Golden, CO 80401 USA
Marshall.Buhl@nrel.gov
Voice: +1 (303) 384-6914
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Re: Structural design of the wind turbine blade

Postby Jason.Jonkman » Wed Jul 28, 2010 10:56 am

Dear Shankar,

Are you referring to the 61.5-m long blade that is part of the NREL 5-MW baseline wind turbine? The properties of this blade, and the procedure use to arrive at its properties, are documented in the NREL 5-MW turbine specifications report, available from here: http://www.nrel.gov/docs/fy09osti/38060.pdf. As the specifications report indicates, we did not design this blade, but obtained blade design properties from other sources.

I hope that helps.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

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Re: Structural design of the wind turbine blade

Postby Alex.Quinlan » Fri Sep 02, 2011 1:41 pm

Hi everyone. I'm in a similar situation to Shankar. I'm looking for a baseline for the creation of a multi-MW blade. My interest is primarily in the structural performance of the single blade, rather than the simulation of the entire turbine. Since design specifications of current blades are proprietary, I am hoping to use the NREL 5MW turbine to create some sort of reasonable finite element model of a blade.

The 5-MW specifications report lists the airfoil type at each of the nodes (Table 3-1). Sandia has developed an ANSYS pre/post processor called NuMAD (http://windpower.sandia.gov/NuMAD.htm) which creates a blade mesh from a series of airfoils along the length. It also has the capability of including the shear web.

It seems that this would give you the basic shape of the skin, with pretty similar aero properties. It seems that with some work, the structural properties could be defined in an FE model to reasonably correlate with the FAST structural specifications.

Jason and Marshall: do you think creation of a baseline FE model is feasible through this method? Do you think it would be worth while?

Regards,
Alex
------------------
Alex Quinlan
MS Candidate - Mechanical Engineering
Western Michigan University

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Re: Structural design of the wind turbine blade

Postby Jason.Jonkman » Fri Sep 02, 2011 3:36 pm

Dear Alex,

In addition to the external shape, NuMAD requires that the composite laminate layup be defined. In effect, you would have to reverse-engineer the composite layup from the beam properties. Such reverse engineering would be worth while, and in fact, I think people have already done it before, as alluded to in the Sandia report found here: http://windpower.sandia.gov/other/113779.pdf. While I haven't seen the composite laminate layup for the NREL (UpWind) 5-MW turbine myself, hopefully you can find it with a bit of research. I suggest you start by contacting the authors of the Sandia report. If you find the information, please post a link here on the forum.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

Alex.Quinlan
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Re: Structural design of the wind turbine blade

Postby Alex.Quinlan » Tue Sep 06, 2011 6:41 pm

Jason:
After reading that paper, I think I will just use their 100 m blade to do my research. It fits in perfectly with the direction I wanted to take my thesis. Thanks a lot for pointing me to it; I doubt I would have found it on my own.

-Alex
------------------
Alex Quinlan
MS Candidate - Mechanical Engineering
Western Michigan University

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Re: Structural design of the wind turbine blade

Postby Brian.Resor » Mon Jul 08, 2013 9:31 am

Hello,
I'd like to advertise the availability of a basic structural layup to go along with the basic 61.5m blade design defined by NREL's 5MW reference model. The layup design was done in a manner similar to that of the Sandia 100m blade design. Both a report and model files are available to anyone who is interested in them. You can contact me directly to get these files or can contact Sandia through the contact information listed on the NuMAD software webpage: http://energy.sandia.gov/?page_id=2238

Brian Resor
Brian Resor
Technical Staff, Wind Energy Technologies Department
Sandia National Laboratories, Albuquerque, NM
505-284-9879

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Re: Structural design of the wind turbine blade

Postby Marshall.Buhl » Thu Jul 11, 2013 9:11 am

Brian,

I think this may be very useful to some people who are trying to model the NREL 5MW turbine with greater fidelity. Thanks for doing this and making it available.

One question: Does the design you came up with have the same distributed properties (mass and stiffness) as the FAST model of the NREL 5MW blade?
Mr. Marshall L. Buhl Jr.
NWTC-3811
National Renewable Energy Laboratory
Golden, CO 80401 USA
Marshall.Buhl@nrel.gov
Voice: +1 (303) 384-6914
Cell: +1 (303) 915-6623
Fax: +1 (303) 384-7079

Brian.Resor
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Re: Structural design of the wind turbine blade

Postby Brian.Resor » Thu Jul 11, 2013 10:05 am

Mass properties are close, because I tried hard to make sure the blade mass matched with what the 5MW reference model called out.

Interestingly, the blade I made does not match the distributed stiffness properties. I found that I needed to make my blade stiffer in the flap direction to avoid tower strike (including safety factors) during the ECD case.
Brian Resor
Technical Staff, Wind Energy Technologies Department
Sandia National Laboratories, Albuquerque, NM
505-284-9879

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Re: Structural design of the wind turbine blade

Postby Khaled.Yassin » Sat Jun 14, 2014 9:57 am

Dear Brian,
Would you please provide me with the NREL 5MW 61.5m blade composite layup mentioned in the above discussion. I'll be grateful for that to use it in my research.
Best Regards,
Khaled Yassin.
Researcher, Faculty of Engineering, Ain Shams University, Cairo, Egypt

Pravin.Kulkarni
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Re: Structural design of the wind turbine blade

Postby Pravin.Kulkarni » Fri Oct 16, 2015 6:19 am

Hi Brian

Would you kindly provide me the basic structural layup to go along with the basic 61.5m blade design defined by NREL's 5MW reference model for my research work?. It will be highly helpful

-Best Regards
Pravin Kulkarni


Brian.Resor wrote:Hello,
I'd like to advertise the availability of a basic structural layup to go along with the basic 61.5m blade design defined by NREL's 5MW reference model. The layup design was done in a manner similar to that of the Sandia 100m blade design. Both a report and model files are available to anyone who is interested in them. You can contact me directly to get these files or can contact Sandia through the contact information listed on the NuMAD software webpage: http://energy.sandia.gov/?page_id=2238

Brian Resor

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Re: Structural design of the wind turbine blade

Postby Tuhin.Roy » Fri Nov 27, 2015 5:20 am

Dear Brian,

We have started the Finite Element modeling of the NREL 5MW wind turbine blade. We have faced one problem regarding the shear web modeling. It will be really helpful for us if you send the NREL 5MW 61.5m blade composite layup inputs.

Thanks in advance,
Tuhin

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Re: Structural design of the wind turbine blade

Postby KumaraRaja.Eedara » Mon May 22, 2017 9:07 am

Dear Brian Resor,

Can you please email me at kumarraja.e@gmail.com the report and model files of 61.5m blade design. Thanks.
I have downloaded 64bit version of NuMad from their webpage but it doesn't has any airfoil info in it.
Regards,
Kumara

Brian.Resor wrote:Hello,
I'd like to advertise the availability of a basic structural layup to go along with the basic 61.5m blade design defined by NREL's 5MW reference model. The layup design was done in a manner similar to that of the Sandia 100m blade design. Both a report and model files are available to anyone who is interested in them. You can contact me directly to get these files or can contact Sandia through the contact information listed on the NuMAD software webpage: http://energy.sandia.gov/?page_id=2238

Brian Resor

Liang.Ji
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Re: Structural design of the wind turbine blade

Postby Liang.Ji » Mon Apr 15, 2019 6:50 pm

Dear Brian Resor

Can you send me a copy of the model files of 61.5m blade design, my e-mail address is:jiliang_199402@163.com

Best Regards,
Liang

Brian.Resor wrote:Hello,
I'd like to advertise the availability of a basic structural layup to go along with the basic 61.5m blade design defined by NREL's 5MW reference model. The layup design was done in a manner similar to that of the Sandia 100m blade design. Both a report and model files are available to anyone who is interested in them. You can contact me directly to get these files or can contact Sandia through the contact information listed on the NuMAD software webpage: http://energy.sandia.gov/?page_id=2238

Brian Resor

Zhikang.Deng
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Re: Structural design of the wind turbine blade

Postby Zhikang.Deng » Fri Apr 19, 2019 5:55 am

Dear Brian Resor,
Could you please kindly provide me the composite layup to go along with the basic NREL's 5MW reference model?

I am a PhD student in Delft University of Technology, i would like to use it on my research.

It will be highly helpful if you could send me the layup information.

My email is Z.Deng-3@tudelft.nl

Thanks a lot.

zhikang






Brian.Resor wrote:Hello,
I'd like to advertise the availability of a basic structural layup to go along with the basic 61.5m blade design defined by NREL's 5MW reference model. The layup design was done in a manner similar to that of the Sandia 100m blade design. Both a report and model files are available to anyone who is interested in them. You can contact me directly to get these files or can contact Sandia through the contact information listed on the NuMAD software webpage: http://energy.sandia.gov/?page_id=2238

Brian Resor


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