[Radiance-general] Two windows different directions Three Phase simulation

[Sandi Sirikhanchai]

Hi Greg,



I am using 5.2, I will try with “klems_full.cal” and the windows are defined as “glow”.



I will definitely give the multiplication and addition a good go myself first but thank you for letting me know.



Yes, I am going between Sarith’s tutorial and Andy’s gitbook tutorial.



Your explanation to my final questions is incredibly helpful!



In regards to the multiplication of matrices, I am just testing with one window at the moment and I have an error that says “unexpected column count in header”.

The view matrix has 13 rows and 145 columns

The daylight matrix has 145 rows and 2306 columns

The sky matrix has 146 rows and 8760 columns (but there is only 3 columns (RGB) and many many rows)

And the BTDF is in its own different format.



Should the sky matrix say 146? Or 145? My command to create a smx is: “gendaymtx albany.wea > albany.smx”.



Thank you for your help.



Kind regards,

Sandi





________________________________
From: Gregory J. Ward <gregoryjward at gmail.com>
Sent: Tuesday, January 23, 2018 4:20:26 PM
To: Radiance general discussion
Subject: Re: [Radiance-general] Two windows different directions Three Phase simulation

P.S.  Forgot to answer your final question.  You can place your receiver surface slightly in front of your window -- you are right that you don't want it in the same plane as another surface with a different material.  This would definitely mess things up.  You can re-use the same inward-facing surface as used for the view matrix receiver as a sender in the rfluxmtx command, and the material type will be ignored.  Having this surface a little inside the window will include the window in the daylight matrix.  If you want its influence in the view matrix, you can put your glow/light surface just outside the window, still with its surface normal facing into the room.  This would be appropriate if you wanted to use a BTDF for an exterior shading system, for example.
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