Low Wind turbine Aerofoil

Discuss acquisition, use, and manipulation of airfoil data.

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Suni.Kar
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Location: India

Low Wind turbine Aerofoil

Postby Suni.Kar » Tue Aug 07, 2012 9:37 am

Dear Friend,
What are the aerofoil series are used to low wind turbine blades

Marshall.Buhl
Posts: 437
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Re: Low Wind turbine Aerofoil

Postby Marshall.Buhl » Tue Aug 07, 2012 5:13 pm

Dear Suni,

Choosing an airfoil is more a matter of the type of turbine (stall regulated, variable pitch, variable speed, turbine size) than about siting one in a low wind-speed location. You can read up on our airfoils here:

http://wind.nrel.gov/airfoils/AirfoilFamilies.html

My method of designing a rotor for a low wind-speed site is to make the blades longer without increasing the power rating of the generator.


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
Cell: +1 (303) 915-6623
Fax: +1 (303) 384-7079

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

Re: Low Wind turbine Aerofoil

Postby Suni.Kar » Wed Aug 08, 2012 10:28 am

Dear Marshall.Buhl,
While talking about laminar ,turbulent , transition stages on the wind turbine blade ,Reynolds number values are varied without reasoning. My books refers Reynolds number for laminar is about 5*10^5 another one site tells <10,0000. Kindly tell me the Reynolds number values for laminar and transition ,turbulence.

Marshall.Buhl
Posts: 437
Joined: Fri Oct 21, 2005 10:22 am
Organization: NREL/NWTC
Location: Boulder, CO
Location: Boulder, CO
Contact:

Re: Low Wind turbine Aerofoil

Postby Marshall.Buhl » Thu Aug 09, 2012 11:55 am

I answered this same question in your other thread. Please don't post the same questions on multiple threads.
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


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