A golden oldie for you all. Just about this time in 2009 we discussed the
possibility that vertical axis wind turbines could be organised as schools
of fish to boost efficiency as a flock. Peter Lissaman was not amused.
It turns out that the physicist who proposed the idea won a MacArthur
Roger Critchlow wrote:
Well, I better keep my voodoo fluid dynamics speculations to myself in
the future.
Nah. The venue for objection was the APS meeting in Minneapolis...
FRIAM Applied Complexity Group listserv
Meets Fridays
, 2009 9:45 PM
Subject: Re: [FRIAM] flocking windmills
Sorry, everybody. What I meant to write was, Wait a blithering moment!!!,
suggesting, at least, that the metaphor between bunching up cyclists and
bunching up windturbines was backwards. Don't you WANT your turbines to feel
the headwind
Sent: Wednesday, November 25, 2009 12:05 AM
Subject: Re: [FRIAM] flocking windmills
It looks to me the article addresses this. When windmills are in a
conventional face to the wind position, they do need to be well spread out in
order to catch as much wind as possible. But if you rotate
/
http://www.cusf.org [City University of Santa Fe]
- Original Message -
From: Hugh Trenchard
To: The Friday Morning Applied Complexity Coffee
Group;nickthomp...@earthlink.net;Carl Tollander
Cc: Friam@redfish.com
Sent: 11/25/2009 7:15:27 AM
Subject: Re: [FRIAM] flocking windmills
...@earthlink.net;Carl Tollander c...@plektyx.com
*Cc: *fr...@redfish.com
*Sent:* 11/25/2009 7:15:27 AM
*Subject:* Re: [FRIAM] flocking windmills
...that should read rotate the position of the fans 90 degrees (it was
late and I should have been in bed).
- Original Message -
*From
]
- Original Message -
From: Roger Critchlow
To: nickthomp...@earthlink.net;The Friday Morning Applied Complexity Coffee
Group
Sent: 11/25/2009 10:26:08 AM
Subject: Re: [FRIAM] flocking windmills
No, the pelaton uses the lead rider to break a bow wave through the air, but
the eddies from
...@earthlink.net;The Friday Morning Applied Complexity
Coffee Group friam@redfish.com
*Sent:* 11/25/2009 10:26:08 AM
*Subject:* Re: [FRIAM] flocking windmills
No, the pelaton uses the lead rider to break a bow wave through the air,
but the eddies from each rider's passage also curl around to give some
As others have already said, this is about Vertical Axis Wind Turbines
(VAWT) rather than Horizontal Axis Wind Turbines (HAWT) like you see in
eastern New Mexico and west Texas. The article is incorrect about VAWTs
being a new idea - Sandia developed the idea in the '70s and you can see
one of
ge generation. That's how it all
appears to me in any event.
Hugh Trenchard
-
Original Message -
From:
Nicholas Thompson
To:
Carl Tollander
Cc:
Friam@redfish.com
Sent:
Tuesday, November 24, 2009 9:45 PM
Subject:
Re: [FRIAM] flocking windmills
*
*
On Wed, Nov 25, 2009 at 1:52 PM, Steve Smith sasm...@swcp.com wrote:
I've always wondered how sophisticated the algorithms for arranging
windmills might be.
Here's a micro-engineering variation to keep you out of macro-trouble.
Now -- back into macro-trouble again -- if you had a flock
The mathematics of breaking away and chasing in cycling 77.
Eur J App Phiol 492-497
- Original Message -
From: Nicholas Thompson
To: Roger Critchlow
Cc: friam@redfish.com
Sent: Wednesday, November 25, 2009 9:43 AM
Subject: Re: [FRIAM] flocking windmills
Cyclists want lift
Well, I better keep my voodoo fluid dynamics speculations to myself in the
future.
Here's more information about the reported effect, written by someone who'd
seen a vertical axis windmill before.
http://physicsworld.com/cws/article/news/40993
The reason, they say, is that the presence of
Same power production as existing wind farms in 100th the land area.
http://sciencenow.sciencemag.org/cgi/content/full/2009/1124/1
-- rec --
FRIAM Applied Complexity Group listserv
Meets Fridays 9a-11:30 at cafe at St. John's College
://home.earthlink.net/~nickthompson/naturaldesigns/
http://www.cusf.org [City University of Santa Fe]
- Original Message -
From: Roger Critchlow
To: The Friday Morning Applied Complexity Coffee Group
Sent: 11/24/2009 7:36:30 PM
Subject: [FRIAM] flocking windmills
Same power production
University of Santa Fe]
- Original Message -
From: Roger Critchlow
To: The Friday Morning Applied Complexity
Coffee Group
Sent: 11/24/2009 7:36:30 PM
Subject: [FRIAM] flocking windmills
Same power production as existing wind farms in
To: nickthomp...@earthlink.net;The Friday Morning Applied Complexity Coffee
Group
Sent: 11/24/2009 10:13:22 PM
Subject: Re: [FRIAM] flocking windmills
What they lack is mobility - lacking some sort of mobile platform maybe they
could get together and decide where the next best placement would
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