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[EnergyPlus_Support] Re: modelling a dome

Hi,

This dome thing is extremely frustrating. I thought I had chased out all the voodoo with this thing only to realize I was tricked into thinking i had. Apparently, even though openstudio colored the surfaces corretly in SketchUp, the idf file still contains a missing wedge of surfaces.

I am at my witts end. I have drawn the dome in every possible way; in and outside of thermal zones, copy and paste, circles, archs, elipses, etc.. Invariably I end up with a -vertical row- of trapezoids that are not identified as surfaces. When I right click on these planar pieces i am not give the openstudio > object info choice. 

I can't just leave the dome out because the dome is the building, wiht an 11e3 ft^2 base.

Possible reason for the phantom surfaces:

(1) The dome is not half of a sphere. it is eliptical. this may cause some sort of issue in creating the surface map.

(2) The base of the dome is never -perfectly divisible- into a number of sides. So when SkethUp creates the geometry of the dome there are a vertical row of trapezoids that do not have the same size/shape/whatever as the others. SketchUp discriminates these pieces and refuses to recognize they exist.

(3) I did somthing horrible in a former life. Karmic debt.

(4) A large dome can not be modeled using open-studio

Any insight will be greatly appreciated. Thank You!

Coy



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "coy_mllr" <coy_mllr@...> wrote:
>
> Hi, I am trying to model a large dome structure in energyplus using openstudio. Thus far, I have been unsuccessfull. It seems openstudio has issues identifying the dome surface as a roof. The program designates one -pie slice- of the dome as a wall. then, when I load the idf into EP launch and run an analysis, energyplus seems to register the -pie slice- as an opening. Is it possible to model a dome in e-plus using open studio? Any suggestions?
> 
> Thank You!
> 
> Coy
> 
> CH2M Hill - intern
> OIT Renewable Energy Engineering - student
>




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