he potential of BF to assess such cases. In your search, try and be specific on what you want, cause validation can focus on codes (i.e software environments like OF and Fluent), solvers (e.g. RNG vs kEpsilon vs kOmega, etc.), meshers, and so many more. Additionally, I'm sure there's a lot of CFD studies of Atrium spaces.
Myself, I haven't been involved in any validation studies as I have always used CFD on the practical side of things. Therefore, I always trusted OF since it has been heavily validated over the years.
The beauty of BF, or at least its end goal, is that you can easily test design alternatives directly from a friendlier and possibly better-known environment of Rhino3D.
I would suggest therefore to just try things out. Design your geometry, in this case the atrium, in Rhino. Decide which are the parameters that you wish to investigate and incorporate those to a GH definition that produces different design alternatives for the range of those parameters (i.e. your parametric model). Then run the cases through BF. There's a couple of examples that come with BF and a few others users are providing either here or on github.
I'm afraid trial and error is painful with CFD but it's the best way forward. Also, I suggest you bookmark cfd-online.com and skim through everything in there. Most if not all of what we are discussing has been discussed there.
Good luck!
Kind regards,
Theodore.
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e. I want to be able to give it the panels a range let say between 1-3 and then give it a specific number of variations allowed, like only 80 different heights can be generated and the rest of the panels would be rounded up or down to match with one of the 80 heights. would that be possible?
Thanks…
exact formula is inside /lib/skybright.cal if this can help you to find the name.
{ RCSid: $Id$ } { Sky brightness function for sunny and cloudy skies.
Additional arguments required for calculation of skybright:
A1 - 1 for CIE clear, 2 for CIE overcast, 3 for uniform, 4 for CIE intermediate A2 - zenith brightness A3 - ground plane brightness A4 - normalization factor based on sun direction A5,A6,A7 - sun direction }
cosgamma = Dx*A5 + Dy*A6 + Dz*A7;
gamma = Acos(cosgamma); { angle from sun to this point in sky }
zt = Acos(A7); { angle from zenith to sun }
eta = Acos(Dz); { angle from zenith to this point in sky }
wmean(a, x, b, y) : (a*x + b*y) / (a + b);
skybr = wmean((Dz+1.01)^10, select(A1, sunnysky, cloudysky, unifsky, intersky), (Dz+1.01)^-10, A3);
sunnysky = A2 * (.91 + 10*exp(-3*gamma) + .45*cosgamma*cosgamma) * if( Dz - .01, 1.0 - exp(-.32/Dz), 1.0) / A4;
cloudysky = A2 * (1 + 2*Dz)/3;
unifsky = A2;
intersky = A2 * ( (1.35*sin(5.631-3.59*eta)+3.12)*sin(4.396-2.6*zt) + 6.37 - eta ) / 2.326 * exp(gamma*-.563*((2.629-eta)*(1.562-zt)+.812)) / A4;
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rotate back to zero degree (start position) then don't rotate, then rotate to -80 degree, then back to zero degree (start position) and stay there.
I hope the you can help me.
Thank you.
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