I am not quite sure about the answer.Of course the conversion might be time consuming.The idea was to compare the results between HB and EP while keeping the geometry and/use input data that were already set in EnergyPlus.
The Rhino to E+ was very complex because of the geometry(I didn’t work on that).
Assuming that I want to import while keeping the geometry(as it is on the .idf I sent to you), what would the workflow be?
Is it the problem at the .idf, or I have to go back to Rhino and remodel?
I still don’t understand the idea. You want to compare te results of E+ as originally translated from Rhino to those obtained with HB using E+ after importing the idf? Weird, i have to say.
First of all it is the same simulation engine, so the only difference can be produced if HB doesn’t import all the data in the idf. I think that right now, Mostapha/Chris correct me if i’m wrong, there are some entities/classes that are not imported (blinds and window shades for instance. Not sure what happen with schedules and other definitions). So the easy way is to send the imported idf to simulation and compare both idf files to see the differences.
As for the specific example i believe the export to E+ spoiled the geometry and flattened the facade faces. I checked that opening the file in open studio (or importing to HB). Another way to check, just to be sure OpenStudio is not making funny things, is manually: Look for the WallSurface class and see the coordinates of the walls. if they have the same X or Y values, for the supposedly inclined walls, then the export was wrong from the beginning.
If you look for some threads here you’ll find that HB can deal with complex geometries,. So why to do this double work …? So my suggestion in the previous message was to take the original geometry from Rhino and go through the process in HB.
Thank you for you message.Sorry for the late reply, I am still struggling with octopus.
Yes you are completely right that the cleanest way would be it to work with HB directly.It is a group assignment and my friend works only in EP.
The input data has already been added and the idea is to do some other simulations in GH while keeping the geometry.So we don’t go over the input data again.
And also learn the process for future projects.
Is there a site or pdf where it shows what imported and whats not?
Now after importing and flattening the geometry do I rely on the results?Will the angle extruded shape make difference in results?
Thanks again,
Nita
**p.s.**If you have any ideas about the wwr optimization with octopus i would love to hear them.(I also still haven’t figured out what the problem with my model for energy simulations…I constantly get errors)
For comparing your “original” idf with the one created with HB i suggest using the idf editor from E+. There you can see if the different classes were imported by HB (i know that shades are not, but i’m not sure about others). ANother option is to compare both files with something like WinMerge (free tool).
If your idf is not running i suggest to open a discussion for that attaching the relevant files.
As for Octopus, as i said, i’m not an “expert”. But you need to connect to the G (genome) the sliders that change the alternative (window size, wall size, etc) and to O (objectives) the results that according to them the optimizationn will be calculated.
Things i don’t know: how to make a maximization of one of the results and minimization of another (max lighting, for instance, min energy, etc). When you get that please share.
how to make a maximization of one of the results and minimization of another (max lighting, for instance, min energy, etc). When you get that please share.
A common practice is to multiply the one that needed to be maximized with -1 and then try to minimize both.