algorithmic modeling for Rhino

wind simulation with GH+Ecotect, thanks to [uto]'s gEco components.

consequences of NEXUS workshop in Innsbruck.

intructors: Thomas Grabner, Ursula Frick [uto]

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Comment by Patrick Bedarf on March 6, 2012 at 10:57am

Did you experienced any problems with the WinAir / Ecotect link? In my case nothing is happening when I hit run in Ecotect even though I changed clock and folder access permissions.

Comment by Francisco José Romera Fernández on January 26, 2012 at 4:28am

Hi Alessio,

There is a problem when I export the geometry into ecotect from GH. It doesn't work... How do you export the geometry? as wall, partition...? do you export a mesh or another type of geometry?

Thank you!


Comment by Francisco José Romera Fernández on December 15, 2011 at 12:33pm

Hi Alessio,

I have been trying to export a mesh from rhino to ecotec for make the simulation but with this exported mesh the simulation doesn't start and this is so strange, because, when I draw something it works... 

Do you know where is the problem?

Thank you in advance ;)


Comment by Alessio Erioli on December 12, 2011 at 10:59am

Hi Fran! The wind simulation is not in real time, however through gEco you have seamless GH-Ecotect interaction (real-time bidirectional communication for geometry). If the geometry from GH is changed you'll have to re-run the wind simulation.

Elise: sorry for not answering, I must have overlooked the notification e-mail (as you might have guessed I don't check this place very often...). To grab wind data back to GH you should use gEco vector grid component, you can then retrieve in GH the vector grid one plane at the time.

Comment by Francisco José Romera Fernández on December 12, 2011 at 10:26am

Elise, for install WinAir you have to set your computer clock to 2006 or before.

Alessio, i'm trying to do something similar for my final project degree. Is Your simulation bidirectional? what I want to say is if you change your surface it will change the surface in GH and it will change the air?



Comment by EliseElsacker on October 19, 2011 at 11:02am

Hi Alessio,


WinAir won't install because it says the trail periode has elapsed... I don't understand because it seems you tried it not so long ago.

Anyway, I also would like to import wind-data into grasshopper and found this:

But I have no idea how to import that. Do you think it's possible? Is there an other solution?

Or maybe it's better to work with maya?




Comment by Alessio Erioli on June 3, 2011 at 12:57am

Hi Raphael,


the link I posted takes you to a page where the first link is the download link you are looking for.

Comment by raphael le gall on May 29, 2011 at 8:43am

Hi i m doing my diploma and i really need to perform a cfd analysis do u have any idea  where i can find winair? the link doesnt give any execution file so i cant install it...

I really need it since i have a roof with openings and i really need to show that the wind creates positive pressure on the front and negative on the back...


can anyone help me?



Comment by I_M_F [Iker Mugarra Flores] on March 13, 2011 at 7:21am
thanks for sharing your findings and the link, looking forward to test it...
Comment by Alessio Erioli on February 21, 2011 at 7:29am

Hi arie11a0,


if you are working on a case similar to mine (flows outside a volume) both "boundaries" and "outside" options will do.


In any case I don't know how really accurate is WinAir in CFD calculations, it should be confronted with ANSYS fluent or NIST FDS (which in the future should replace winair as a CFD engine for Ecotect).





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