Question-and-Answer Resource for the Building Energy Modeling Community
Get started with the Help page
Ask Your Question
1

Degenerate Surfaces EnergyPlus

asked 2018-11-12 12:28:27 -0500

tanushree gravatar image

updated 2018-11-12 13:25:09 -0500

Hi,

My simulation is crashing quite frequently due to one Degenerate surface, that is the only severe warning I get. I checked the IDF editor, there are no surfaces with 3 or less vertices. Is there a way to locate and delete the degenerate surface?

I can attach my IDF file if needed.

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
1

answered 2018-11-12 12:56:51 -0500

updated 2018-11-12 12:58:53 -0500

If you're using OpenStudio, in SketchUp, tun the OSM Diagnostic Script: Extensions -> OpenStudio User Scripts -> Reports -> OSM Diagnostic Script

That includes the option to delete problematic surfaces, but you probably want to try finding and fixing them first as the auto-remove may mess up surface matching.

If in raw EnergyPlus, enable Output:Diagnostics,DisplayExtraWarnings for more detail on the degenerate surfaces.

edit flag offensive delete link more

Comments

I added the Output:Diagnostics,DisplayExtraWarnings, however it does not point out the degenerate surface. The error message I receive is:

* Warning * GetSurfaceData: There are 2 coincident/collinear vertices; These have been deleted unless the deletion would bring the number of surface sides < 3. * ~~~ * For explicit details on each problem surface, use Output:Diagnostics,DisplayExtraWarnings; * Severe * GetSurfaceData: There are 1 degenerate surfaces; Degenerate surfaces are those with number of sides < 3

tanushree gravatar imagetanushree ( 2018-11-12 17:03:00 -0500 )edit

link to the model

mdahlhausen gravatar imagemdahlhausen ( 2018-11-12 21:45:55 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

 



Question Tools

1 follower

Stats

Asked: 2018-11-12 12:28:27 -0500

Seen: 113 times

Last updated: Nov 12 '18