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Model created with DesignBuilder 7.0 / E+ version : 9.4

I assigned a transmittance schedule to shading surfaces (x7). I note that with a transmittance schedule, the calculation time becomes very long. The model is not very large (17 zones) and the initialization phase seems very long. Without trnasmittance, the simulation time is around 20 min. With transmittance, the initialization phase (before the simulation starts) is very long, so I stop the simulation because after more 2 hours, it doesn't seem right. Note that I have other opaque shading surfaces to take into account a dense urban context. I experienced the same thing with an other model with trees.

Is this normal? I'm looking for information on a possible software limitation on this subject of tranmittance in shading surface and how to remedy it. I can suppply a model to discuss around this problem.

Thanks in advance.

Model created with DesignBuilder 7.0 / E+ version : 9.4

I assigned a transmittance schedule to shading surfaces (x7). I note that with a transmittance schedule, the calculation time becomes very long. The model is not very large (17 zones) and the initialization phase seems very long. Without trnasmittance, the simulation time is around 20 min. With transmittance, the initialization phase (before the simulation starts) is very long, so I stop the simulation because after more 2 hours, it doesn't seem right. Note that I have other opaque shading surfaces to take into account a dense urban context. I experienced the same thing with an other model with trees.

Is this normal? I'm looking for information on a possible software limitation on this subject of tranmittance in shading surface and how to remedy it. I can suppply a model to discuss around this problem.

Thanks in advance.