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
fellow
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 9a-
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
uirements of
Bicycling http://www.cptips.com/energy.htm
4. Olds, T. 1998 "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,
Roger Critchlow wrote:
if you had a flock of egg-beater generators on a piece of Iowa
farmland, could you run them as mixers and give a tornado a leg up
over the next town down wind?
Why should Iowa have all the fun? Howzabout making waterspouts with
flocking tidal turbines? :-)
===
*
*
On Wed, Nov 25, 2009 at 1:52 PM, Steve Smith 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 of egg-beater
nt
in terms of space and maximal wattage 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
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 o
--- 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 th
]
- 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
-
> *From:* Hugh Trenchard
> *To: *The Friday Morning Applied Complexity Coffee Group
> ;nickthomp...@earthlink.net;Carl Tollander
> *Cc: *fr...@redfish.com
> *Sent:* 11/25/2009 7:15:27 AM
> *Subject:* Re: [FRIAM] flocking windmills
>
>
> ...that should read "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
edfish.com
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 p
ty (<#>)
>><http://home.earthlink.net/%7Enickthompson/naturaldesigns/>
>>
><http://www.cusf.org> [City University of Santa Fe]
>>
>>
>>
>
>
>>
>
>>- Original Message -
>>
>From: Carl Tollander
>>
>To
der
Cc: Friam@redfish.com
Sent: Tuesday, November 24, 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 windturbine
Original Message -
From: Carl Tollander
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 d
//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 as existing
://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 as
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
y 19, 2007 3:42 PM
To: The Friday Morning Applied Complexity Coffee Group
Subject: [FRIAM] Flocking
I know you FRIAM'ers are fond of flocking behavior:
http://video.google.com/videoplay?docid=8761390434094738310
<http://video.google.com/videoplay?docid=8761390434094738310&pr=goog-sl&
12:41 PM
Subject: [FRIAM] Flocking
I know you FRIAM'ers are fond of flocking behavior:
http://video.google.com/videoplay?docid=8761390434094738310&pr=goog-sl
--
Doug Roberts, RTI International
[EMAIL PROTECTED]
[EMAIL PROTECTED]
505-455-7333 - Office
505-670-81
Message -
From: Robert Cordingley
To: The Friday Morning Applied Complexity Coffee Group
Sent: Friday, January 19, 2007 2:19 PM
Subject: Re: [FRIAM] Flocking
Really impressive. A while ago my daily commute took me out past the rice
fields south of Houston. Once a year we would see
Really impressive. A while ago my daily commute took me out past the
rice fields south of Houston. Once a year we would see migrating 'rice
birds' in a 'contiguous' tube-like flock stretching from one horizon to
another while rising above the hedge rows. (But that was before digital
cameras.
I know you FRIAM'ers are fond of flocking behavior:
http://video.google.com/videoplay?docid=8761390434094738310&pr=goog-sl
--
Doug Roberts, RTI International
[EMAIL PROTECTED]
[EMAIL PROTECTED]
505-455-7333 - Office
505-670-8195 - Cell
==
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