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[EnergyPlus_Support] Thanks Linda
Very clear explanation. I'll try it that way.
--- Linda Lawrie <linda@xxxxxxxxxx> wrote:
> At 04:13 PM 10/23/2006, David Barrera wrote:
>
> >You mean that looking for "warmup" I'll find out
> about
> >how to modify the tilt or just about boundary
> >conditions, or both.
>
> Looking for warmup, you will learn about the intial
> boundary
> conditions that are used and "warmup convergence" --
> that happens
> before the final simulation and results.
>
> For Tilt of roofs and floors, you have to specify
> the coordinates in
> the order you have given in the "SurfaceGeometry"
> object. All (I
> think) of our example files use "Counter Clockwise"
> to specify the
> coordinates. If you specify them "clockwise"
> instead, you will get a
> 180 degree tilt from what you want. Or another way
> to think of it
> is to "look" from the outside of the roof and
> specify the coordinates that way.
>
> so, if you have a flat roof at 4.5 meters above
> horizontal,
> specifying (counter clockwise):
> (0.0 , 15.24 , 4.5)
> (0.0 , 0.0 , 4.5)
> (5.24 , 0.0 , 4.5)
> (15.24 , 15.24 , 4.5)
>
> gives you a flat roof of the proper tilt.
>
> whereas:
> (0.0 , 15.24 , 4.5)
> (15.24 , 15.24 , 4.5)
> (5.24 , 0.0 , 4.5)
> (0.0 , 0.0 , 4.5)
>
> will give you a roof (I think -- I didn't check this
> -- just reversed
> the coordinates) of improper tilt.
>
> Look up Tilt or SurfaceGeometry in the
> documentation. I think there
> is a fair explanation there.
>
>
> Linda
>
> EnergyPlus WebSite: http://www.energyplus.gov
> Owner: EnergyPlus_Support list
> Member: EnergyPlus Development Team
>
>
>
> [Non-text portions of this message have been
> removed]
>
>
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