How to design airfoil blades for a 300W vertical axis wind turbine

[jack001]

hello folks,

I am in mechanical stream & am working on a project of VAWT of power 300 watt. I found a link where i can calculate power output for different parameter. Here's the link:

http://usvawt.com/cgi/windpower.cgi

where i took height as 2m and width as 3m.

Now need to design airfoil blades. Guide me where to start from? Just know the concept of airfoil but don't know the design procedure.

Thank you.

 

[Bobbywhy]

I visited the website you posted above, but I was not able to discover what is a US-VAWT. Will you please supply more detailed specifics of your project?

 

[Bobbywhy]

Thank you, I used Google and found what is a VAWT.

You may find some suggestions for the design of the airfoil blades here:
energy.sandia.gov/wp/wp-content/gallery/.../SAND2012-0304.pdf

 

[jack001]

Thank you, I used Google and found what is a VAWT.

You may find some suggestions for the design of the airfoil blades here:
energy.sandia.gov/wp/wp-content/gallery/.../SAND2012-0304.pdf

Thanks a lot..

 

[jack001]

there is nothing discussed of blade design. I want to design on Qblade software (or any other that is used to design blade) but no manuals found to learn this software. I am searching for blades used to run at 3m/s to 12m/s where height to diameter ratio is 1.25.

 

[Aero_UoP]

Possibilities are you're going to need different airfoils along the span of the blade. If there isn't any existing airfoil fitting your needs, try to design one with X-Foil.

 

[jim hardy]

do any of these help ?

http://people.clarkson.edu/~pmarzocc/AE429/The NACA airfoil series.pdf

http://www.pdas.com/naca456.html

http://airfoiltools.com/airfoil/naca4digit

 

[Aero_UoP]

do any of these help ?

http://people.clarkson.edu/~pmarzocc/AE429/The NACA airfoil series.pdf

http://www.pdas.com/naca456.html

http://airfoiltools.com/airfoil/naca4digit

These are helpful generally but they deal only with NACA airfoils. I do believe that the best solution for his problem is to try x-foil which is open source with full documentation available.

 

[jim hardy]

Gotcha. I'll watch and learn..

helicopters are a bit too kinematic for me...
http://twitt.org/

 

[jack001]

Possibilities are you're going to need different airfoils along the span of the blade. If there isn't any existing airfoil fitting your needs, try to design one with X-Foil.

thanks. I downloaded X-foil and see no difference. Qblade does the same as X-foil. Now i am stuck to which NACA foil should i use, what material, which process to manufacture.. It seems i have lot more work to do.

Done some study on NACA design and says as you shift down in number, the strength and size of the foil decreases. So i choose NACA 0021 for my blade(just an assumption).

I see people using FRP material for blades. What manufacturing process do they use? Is it carried out in plastic injection molding machine?

 

[jack001]

do any of these help ?

http://people.clarkson.edu/~pmarzocc/AE429/The NACA airfoil series.pdf

http://www.pdas.com/naca456.html

http://airfoiltools.com/airfoil/naca4digit

thanks for your interest. Learned different series of NACA. Didn't knew it has a wide family of numbers.

 

[jack001]

most of the blades i have seen for VAWT is aerofoil designed but this one is out of blue for me to design. From where to start design and what are the things that i should kept in mind while designing.
Air flux it will take will be more but won't drag force more?

 

[Aero51]

I think you should looking into centrifugal fan design, as this is similar to the configuration of your wind turbine. Also, if you PM me I have a contact that may be able to help you.