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[EnergyPlus_Support] Re: modelling a dome

To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] Re: modelling a dome
From: "coy_mllr" <coy_mllr@xxxxxxxxx>
Date: Fri, 18 Feb 2011 21:41:02 -0000
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Karen, can you define material specifications and the like if you run from openstudio? It seems, from my limited experience with e-plus and openstudio, the benifit of modeling from ep-launch is the power you have to control variables in the IDF and TEXT editor. 

I figured out my problem from earlier. I wasn't requesting the correct output reports from the IDF Editor. 

The modeling of this building is almost complete! Thanks so much,

Coy



--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Karen Walkerman <kwalkerman@...> wrote:
>
> Can you attach the idf file?
> 
> Also, you can try simulating the file directly from OpenStudio.  This gives
> you the opportunity to set the run parameters in a more user-friendly
> fashion than in the idf file, or the idf editor.
> 
> --
> Karen
> 
> On Fri, Feb 18, 2011 at 3:55 PM, coy_mllr <coy_mllr@...> wrote:
> 
> >
> >
> > Thank you all so much for your help! I now have an IDf file that I can use
> > for modeling. This mailing list is amazing.
> >
> > I am having an issue running the simulation. When I open the IDF and
> > weather data in ep launch and try to run a simulation I don't have any
> > results. I used the IDf editor to define all materials and simulation
> > parameters but the only result I have available for viewing is the drawing
> > file. What am I missing? This has to be somthing very basic that I am
> > missing. The simulation control is set for run simulation for weather file
> > run periods. Shouldn't this produce results?
> >
> > Thanks Again!
> >
> > Coy
> >
> >
> > --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Karen Walkerman <kwalkerman@>
> > wrote:
> > >
> > > Attached is an idf file I created using OpenStudio and the method
> > described
> > > in my previous post. I used an 8-sided polygon to create the dome.
> > >
> > > --
> > > Karen
> > >
> > > On Fri, Feb 18, 2011 at 9:15 AM, Karen Walkerman <kwalkerman@>wrote:
> >
> > >
> > > > To draw a dome that is appropriate for Open Studio, I would try the
> > > > following (outside of any EnergyPlus Zone:
> > > >
> > > > 1. Select the circle tool. Before drawing anything enter the number of
> > > > sides you want the circle to draw (look in the lower right hand corner,
> > the
> > > > current number of sides will be listed). 8 should be sufficient.
> > > >
> > > > 2. draw a dome following the directions here:
> > > >
> > > > http://sketchup.google.com/support/bin/answer.py?hl=en&answer=39070
> > > >
> > > > 3. copy the outer face of the dome and move it away from any other
> > > > geometry. This will give you a dome that has only one surface.
> > > >
> > > > 4. turn hidden geometry to "on" You will see that the dome is made up
> > of
> > > > a bunch of individual faces. I think that at this point you can copy
> > and
> > > > paste the dome into your energyplus zone.
> > > >
> > > > 5. One thing to think about is that I don't think that the energyplus
> > > > geometry can recognize a face with a hole in it, so if you have a flat
> > roof
> > > > with a dome in the middle, you probably want to divide the roof into
> > two
> > > > sections, and then put the dome in the middle. My guess is that this is
> > > > what is confusing OpenStudio and creating the dome 'window'
> > > >
> > > > --
> > > > Karen
> > > >
> > > > On Fri, Feb 18, 2011 at 8:35 AM, Andy Tindale <
> > > > andy.tindale@> wrote:
> > > >
> > > >>
> > > >>
> > > >> Coy,
> > > >>
> > > >> I appreciate that you're trying to do this in OpenStudio but if you
> > are
> > > >> unable to make further progress you could consider using a
> > DesignBuilder
> > > >> evaluation just to generate the dome geometry (DesignBuilder has a
> > built in
> > > >> dome block type). You may then be able to import the IDF generated by
> > DB
> > > >> into OpenStudio if that is your preferred modelling environment.
> > > >>
> > > >> Regards,
> > > >>
> > > >> Andy Tindale
> > > >> DesignBuilder Software ltd
> > > >> www.designbuilder.com
> > > >>
> > > >>
> > > >> -----Original Message-----
> > > >> From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:
> > > >> EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Joe Huang
> > > >> Sent: 18 February 2011 06:57
> > > >> To: EnergyPlus_Support@xxxxxxxxxxxxxxx
> > > >> Cc: coy_mllr
> > > >> Subject: Re: [EnergyPlus_Support] modelling a dome
> > > >>
> > > >> The title of your post caught my eye, because I worked on the same
> > > >> problem, i.e., modeling a dome, nine years ago, although I was doing
> > it
> > > >> in DOE-2, rather than EnergyPlus.
> > > >>
> > > >> As far as I know, all surfaces in any building energy simulation
> > program
> > > >> has to be planar, so I don't see how a pie slice would work,
> > > >> unless it's automatically decomposed by OpenStudio into planar
> > polygons.
> > > >>
> > > >> What I did was to write an awk program that decomposes a hemispheric
> > > >> dome with a given radius into a collection of polygons. It's written
> > up
> > > >> in an old DOE-2 User News article. See pp. 18-19 in
> > > >>
> > > >> http://gundog.lbl.gov/dirun/23s_o_1.pdf
> > > >>
> > > >> You would have to modify the program to output IDF instead of BDL,
> > > >> but the fundamental math should still work.
> > > >>
> > > >> Joe
> > > >>
> > > >> Joe Huang
> > > >> White Box Technologies, Inc.
> > > >> 346 Rheem Blvd., Suite 108D
> > > >> Moraga CA 94556
> > > >> (o) 925-388-0265
> > > >> (c) 510-928-2683
> > > >> yjhuang@
> >
> > > >> www.whiteboxtechnologies.com
> > > >> "Building energy simulations at your fingertips"
> > > >>
> > > >> On 2/16/2011 1:05 PM, 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
> > > >> >
> > > >> >
> > > >>
> > > >> ------------------------------------
> > > >>
> > > >> Primary EnergyPlus support is found at:
> > > >> http://energyplus.helpserve.com or send a message to
> > > >> energyplus-support@
> >
> > > >>
> > > >> The primary EnergyPlus web site is found at:
> > > >> http://www.energyplus.gov
> > > >>
> > > >> The group web site is:
> > > >> http://groups.yahoo.com/group/EnergyPlus_Support/
> > > >>
> > > >> Attachments are currently allowed but be mindful that not everyone has
> > a
> > > >> high speed connection. Limit attachments to small files.
> > > >>
> > > >> EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under
> > the
> > > >> Documentation link and press the "search" button.
> > > >> Yahoo! Groups Links
> > > >>
> > > >>
> > > >>
> > > >
> > > >
> > >
> >
> >  
> >
>




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