Low Wind turbine Aerofoil

Discuss acquisition, use, and manipulation of airfoil data.

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Suni.Kar
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Organization: self
Location: India

Low Wind turbine Aerofoil

Postby Suni.Kar » Mon Jul 30, 2012 10:42 am

Dear Friends,
I want to know about "what are the factors should be consider while selecting the aerofoil for low Reynold number and small wind turbine blades.Kindly share your opinion

Irfan.Zafar
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Joined: Mon Jun 18, 2012 1:27 pm
Organization: Global Blade Technology
Location: Netherlands

Re: Low Wind turbine Aerofoil

Postby Irfan.Zafar » Wed Aug 01, 2012 3:21 am

Suni,
Desired airfoil characteristics depend on the type of wind turbine (stall regulated or pitch regulated, fixed speed or variable speed). But the general characteristics includes insensitive to roughness, high lift to drag ratio in the outboard part, smooth stall etc. Airfoils designed for high Reynolds number can suffer from performance loss (loss of lift and increase in drag) when used at low Reynolds numbers. So, for small wind turbines especially look at the performance of airfoils at low Reynolds number.

Regards,

Irfan

Suni.Kar
Posts: 23
Joined: Tue Jun 26, 2012 9:43 am
Organization: self
Location: India

Re: Low Wind turbine Aerofoil

Postby Suni.Kar » Thu Aug 02, 2012 11:46 am

Dear Zafar,
For low wind turbine have to consider BEM theory and momentum, tip losses or not?. Can you tell me low reynolds number aerofoils.

Irfan.Zafar
Posts: 14
Joined: Mon Jun 18, 2012 1:27 pm
Organization: Global Blade Technology
Location: Netherlands

Re: Low Wind turbine Aerofoil

Postby Irfan.Zafar » Thu Aug 02, 2012 12:52 pm

Suni,
The design approach for small wind turbines is same as for large wind turbines. BEM theory does not pose any restriction on the size of wind turbine so there is no difference in my opinion between small and large HAWTs.
For low Reynolds number airfoils you can look at University of Illinois website. Here is the link: http://www.ae.illinois.edu/m-selig/pd.html

Regards,

Irfan

Suni.Kar
Posts: 23
Joined: Tue Jun 26, 2012 9:43 am
Organization: self
Location: India

Re: Low Wind turbine Aerofoil

Postby Suni.Kar » Sun Aug 26, 2012 12:22 pm

I want to know the latest list of aerofoils for small wind turbine blades. Above links having the aerofoils, which are formulated before the year of 2000


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