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How to fix fatal error relating to degenerate surfaces?

asked 2020-05-28 12:17:26 -0500

CullerWhale's avatar

updated 2020-05-29 12:30:41 -0500

Hello, I am new to this program. I am looking for some help solving a degenerate surface fatal error. I attached a link to the idf files and copied the error file below. Any help or guidance in the right direction would be greatly apprecaited.

Thank you

https://drive.google.com/drive/folder...

C:\fakepath\Screen Shot 2020-05-29 at 10.51.34 AM.pngcimage description

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answered 2020-05-28 19:30:43 -0500

Did you read the error message? It says: "There are 3 degenerate surfaces; Degenerate surfaces are those with number of sides < 3. These surfaces should be deleted".

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and how am I supposed to determine which three surfaces need to be deleted or how to select them in the model?

CullerWhale's avatar CullerWhale  ( 2020-05-29 10:19:00 -0500 )edit

"For explicit details on each problem surface, use Output:Diagnostics,DisplayExtraWarnings;". If you add this object to your IDF file and re-run it, it will give additional information.

shorowit's avatar shorowit  ( 2020-05-29 10:20:59 -0500 )edit

I added that to the end of my in.idf file and pre-process.idf file, went back into openstudio and ran the simulation. I then checked the error file but it didnt mention degenerate surfaces, it mainly provided things like:

Program Version,EnergyPlus, Version 9.2.0-921312fa1d, YMD=2020.05.29 10:38, * Severe * <root>[Coil:Cooling:WaterToAirHeatPump:EquationFit][Wtr-to-Air HP Clg Coil 1] - Missing required property 'water_inlet_node_name'.

Any advice? Am I doing this correctly? You have helped tremendously so far. I will try re-post the error file above.

CullerWhale's avatar CullerWhale  ( 2020-05-29 10:55:19 -0500 )edit
1

Running the OpenStudio simulation will overwrite the EnergyPlus input files you edited. You can use this measure in OpenStudio to add the output diagnostics to your simulation.

ericringold's avatar ericringold  ( 2020-05-29 15:11:41 -0500 )edit

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Asked: 2020-05-28 12:17:26 -0500

Seen: 214 times

Last updated: May 29 '20