Hello friends I modeled a complex shading that contains a large number of surfaces. In daylight simulation everything is ok; But in the energy simulation, the run time is very high and it takes about 4 hours and does not end. While when we disconect the shedes from the model, the run time is redu…

That looks about on path with having a ton of complex shading geometries in an E+ simulation… time wise that is. Try “flattening” the input to mesh join; if that doesn’t work; I’d need the *.gh file to be of more help. Also: E+ sim time related questions: Are you using pixel counting or polygon…

Thankful @TrevorFedyna I flattened the trees, but still run-time was not normal. I put the GH file; Thanks for taking a look that. [cbae8002ecc411a92b6c1ab36c3cbb7e]

Solution exception: ** Fatal ** GetSurfaceData: Errors discovered, program terminates. [DSCN1870]

At a guess I’d expect pretty similar number of shades to be produced from the Shade component whether you send it Breps or meshes. The Shade component will mesh any brep input for you, and output the individual faces as HB shades. I’d recommend working with your geometry as a mesh and looking for a …

Thank you for your answer @charlie.brooker I realized the problem was the geometry, not a large number of shades; But whatever I think, I see no flaw in the geometry algorithm. According to previous experiences, we turned the produced trimmed surface into mesh and the energy analysis was done easil…

This kind of shading geometry is handled very poorly in e+. I would suggest having a look into LBNL Window tools to generate a BSDF file to approximate the shading and attaching it to a window construction. I’m not sure if the BSDF import option is available in LBT 1.0+ version, but it was availabl…

Hey @Aliarch , Yes, that’s a risk of using meshes to represent the geometry. When you use meshes instead of breps, you sometimes get quad meshes that are not planar. It’s not a very common occurrence and it usually does not change the results much but I’ll try to add something that addresses this c…

FYI, I added some extra checks to ensure that non-planar quad mesh faces are always planarized before export to EnergyPlus: fix(planarize): Add some extra checks to ensure everything is planar ladybug-tools:master ← chriswmackey:master …

Hi @chris Thank you for your effort Of course, I found the exact cause of the problem several days ago, but I did not have time to discuss it here. The problem arises precisely from Rhino, to which Energy Plus is very sensitive. I came to the conclusion that the Trimmed surfaces could not be analy…

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Energy simulation, the run time is very high

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