[Radiance-general] Modeling printed glass with dielectric material

[francesco.frontini at polimi.it]

Dear all,

I have a question concerning dielectric and how to model correctly  
printed stripe (fritted glass) on a surface of dielectric material.

According to the reference manual, " Ordinary dielectrics are  
surrounded by a vacuum". But in my case, the transition between the  
dielectric and the print color is different to the transition from  
dielectric to vacuum. And since I'll have the printed stripes on  
different layers, the difference is significant.

My purpose is to simulate with Radiance a laminated glass with fritted  
stripes on the surface in-between the two laminated glass sheets. I  
want to check the view to the outside and the transmission of such  
fritted glass.

I already modeled the stripe as a plastic surface with a very small  
gap between the two panes of glass. But I obtained wrong result  
because of the air gap between the stripe and the dielectric (glass)  
panes.

Any idea how to model this correctly?

What happens, if the dielectric is not completely "boxed", but parts  
of the "box" replaced by plastic material?

Thanks in advance


Francesco Frontini