Re: [EnergyPlus_Support] Re: Degenerate Surface Errors in EP6.0 to EP7.0 transition

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

Not sure which version you are using -- yes you should be
able to see which surface ended up generating this.

I see the topic is V6 to V7.  We are about to release V7.2 and we
have made some of these kinds of errors more explicit.

If you need more help, please submit your file to the helpdesk.

At 07:05 AM 10/11/2012, FrancescoP wrote:
> I got the following sever
> error:
>
>    ** Severe  ** GetSurfaceData: There are 1 degenerate
> surfaces; Degenerate surfaces are those with number of sides < 3.
>    **   ~~~   ** These surfaces should be
> deleted.
>    **   ~~~   ** For explicit details on
> each problem surface, use
> Output:Diagnostics,DisplayExtraWarnings;
>
> I have added Output:Diagnostics,DisplayExtraWarnings but I am not able to
> find what surface generates that problem. Where should the extra warnings
> be? In the *.err file?
> Best Regards
> Francesco Passerini
>
>
>
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...>
> wrote:
> >
> > At 02:59 AM 12/19/2011, Adil SMH wrote:
> > >Are there some more stringent topology check added in EP7 then
> > >earlier versions? and finally what can be done to remove
> this.
> > 
> > Yes, there is more stringent checking in V7.  In particular,
> surfaces 
> > with coincindent vertices have those vertices removed until there
> are 
> > 3 sides left -- but these are still coincident.
> > 
> > Use the Output:Diagnostics, DisplayExtraWarnings; (as noted in the
> > error file) to show each problem surface.  You should examine
> them 
> > and, if they are all coincident vertices, remove the surface. 
> (You 
> > can easily test by commenting out that particular surface in a text
> > editor).  Or create a backup of your idf, and remove the
> offending surfaces.
> > 
> > These surfaces cause the shading calculations not only to do extra
> > work but probably somewhat inaccurate work.
> >
>
>
>
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