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chandan kumar
Participant

Join Date: Jul 2010
Posts: 3

Windmill Blade Design

03/26/2011 12:25 AM

hi frnds!i m working on a project of contra rotating windmill turbine.i hav got struck on the designing procedure part & which software could be the best to give all inputs and get a proper design.plz help me in finding step by step procedure for designing a windmill blade in contra rotation & if there is any software which can help me out of this..thanks!
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lyn
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Join Date: Oct 2008
Posts: 42377
Good Answers: 1691
#1

Re: windmill blade design

03/26/2011 12:41 AM

Homework alert.

Start here:

Performance and stability of a counter-rotating windmill using a ...

The design of a wind turbine in general may start ..... effects for a contra rotating wind mill mea- sured in a wind tunnel. Technical report, Uni- ...

http://www.iai.heig-vd.ch/fr-ch/Actualite/Lists/Liste%20des%20publications/Attachments/29/Main_Document_submitted.pdf

Wind Power Generation and Wind Turbine Design

7.6 Wind turbine with contra-rotating rotors. ..... Design and development of megawatt wind turbines . ..... 1.2 Small wind turbine rotor design. ...

http://www.dconnolly.net/files/Book%20Chapter%20-%20Wind%20Power%20Generation%20and%20Wind%20Turbine%20Design%20-%20Cont...

CLASSIFICATION OF WIND ENERGY CONVERTERS

54: Stephan Hooper vertical wind mill design, 1816. MULTI ROTORS DESIGNS. Counter rotating rotors would lead to the cancellation of some of the torsional ...

https://netfiles.uiuc.edu/mragheb/www/NPRE%20475%20Wind%20Power%20Systems/Wind%20Energy%20Converters%20Concepts.pdf

ENERGY INNOVATIONS SMALL GRANT (EISG) PROGRAM

Collaborate with a gear manufacturing company to design and fabricate torque- hubs, which can be coupled to two contra rotating rotors to drive a generator ...

http://eisg.sdsu.edu/Far/00-09%20FAR%20Appendix%20A.pdf
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chandan kumar
Participant

Join Date: Jul 2010
Posts: 3
#2
In reply to #1

Re: windmill blade design

03/26/2011 12:58 AM

sir,what about the blade design for crwt & how do we select & design airfoil profiles for these blades .is there any software readiy available!?
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lyn
Guru

Join Date: Oct 2008
Posts: 42377
Good Answers: 1691
#3
In reply to #2

Re: windmill blade design

03/26/2011 1:20 AM

LynDoor ™Industries can supply our Veri-foil® BladeMaster 1000. It describes ways to pass gas over a foil and make something move.

You'll want V3.12.123.4.3.55.6 of the current software package, with the 23 patches currently available.

Of course, I'm kidding.
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
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#4
In reply to #3

Re: windmill blade design

03/26/2011 2:00 AM

Oh, are we into tinfoil jock straps now?

The Zen novice says, trees are moving.
The Zen student says, air is moving.
The Zen master says, mind is moving.
The Zen patriarch says, bowels are moving.

--Eugen I

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34point5
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Join Date: May 2010
Location: in optimism
Posts: 4050
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#5
In reply to #2

Re: windmill blade design

03/26/2011 5:21 AM

Design Foil would be a good starter software

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K_Fry
Guru

Join Date: Feb 2011
Location: Atlanta, GA
Posts: 1053
Good Answers: 110
#6
In reply to #2

Re: windmill blade design

03/26/2011 11:26 PM

Yes! There is software readily available! Are you having trouble using Fluent!? With which CFD program are you most familiar!? Where have you run into problems in the design process?

Have you used Excel? It is very good for many design calulations. If you have some knowledge of the subject, you will find the calculator built into Windows to be useful, also.

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chandan kumar
Participant

Join Date: Jul 2010
Posts: 3
#10
In reply to #6

Re: windmill blade design

07/29/2011 12:58 PM

sir,wt about using gambit software for analyzing blade performance...??&if we put some patches over it will it do any better???i mean on the blade if sum fins type structure is made will it do any better in energy conversion on the other side of the blade?
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K_Fry
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Join Date: Feb 2011
Location: Atlanta, GA
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#11
In reply to #10

Re: windmill blade design

08/01/2011 9:54 AM

sir,wt about using gambit software for analyzing blade performance
Yes, good choice.
i mean on the blade if sum fins type structure is made will it do any better in energy conversion on the other side of the blade?
That's what the CFD software will tell you. Depending upon the fins' size and design, the other side of the blade may be affected positively or negatively. The beneficial or detrimental effect will probably change with Reynolds number and angle of attack. In general, any high lift device carries with it an high drag effect, typically decreasing the lift to drag ratio. (In practical terms, you don't see aircraft cruising with their flaps and slats deployed.)

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Easyway
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Canada - Member - New Member

Join Date: Mar 2011
Posts: 128
Good Answers: 8
#7

Re: Windmill Blade Design

03/26/2011 11:41 PM

I'd just like to point out that the gains in economical wind energy have been realized by just making things bigger. In free air, tandem propellers or turbines can only give a marginal advantage, and are probably not worth the complication, compared to just a bit more diameter.
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JAGwinn
Associate

Join Date: Sep 2010
Location: Aiken, South Carolina USA
Posts: 49
Good Answers: 3
#9
In reply to #7

Re: Windmill Blade Design

03/27/2011 9:20 AM

CURB APPEAL!!! We don't want to look like the Jones's!
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cwarner7_11
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Panama - Member - New Member Hobbies - CNC - New Member Engineering Fields - Marine Engineering - New Member Engineering Fields - Retired Engineers / Mentors - New Member

Join Date: Dec 2006
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#8

Re: Windmill Blade Design

03/27/2011 12:12 AM

javafoil
http://www.mh-aerotools.de/airfoils/javafoil.htm
javaprop
http://www.mh-aerotools.de/airfoils/javaprop.htm
xfoil
http://web.mit.edu/drela/Public/web/xfoil/
avl
http://web.mit.edu/drela/Public/web/avl/
datcom
http://www.holycows.net/datcom/
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34point5 (1); chandan kumar (2); cwarner7_11 (1); Easyway (1); JAGwinn (1); K_Fry (2); lyn (2); Tornado (1)

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