[Radiance-general] HIgh illuminance values.

[Greg Ward]

I believe I've suggested this before, but did you try visualizing  
your space at these times?  A fisheye view from the perspective of  
your sensor will usually tell you where the light is originating.

-Greg

> From: G V DEEPAK <deepak.gv at ufl.edu>
> Date: April 24, 2009 5:32:38 AM PDT
>
> Thanks Mr Gulielmetti,
>
> Yes its for single time and sun angle , we were trying sample  
> simulations for 10, 11 am and 12 noon. I am getting these weird  
> results. I have checked the geometry a number of times as well as  
> all the parameters, these results seem very strange. any particular  
> reason..?
>
> Thank you
>
> On Wed Apr 22 22:15:37 EDT 2009, Rob Guglielmetti  
> <rpg at rumblestrip.org> wrote:
>
>> On Apr 22, 2009, at 7:42 PM, G V DEEPAK wrote:
>>> The illuminance values for the blind angles of 0 degrees and 45   
>>> degrees seem to be fine.
>>> However,  I am getting very high illuminance values for the 15   
>>> degree and 30 degree blind angles for the sensor point which is   
>>> closest to the window .
>>> The values are ranging from 8000 lux to 20,000 lux. which I  
>>> guess  are totally unreasonable results when we have blinds  
>>> placed in a room.
>>> These values are higher for the blind angles of 15 degrees and  
>>> 30  degrees than for the completely open blinds (zero blind angle  
>>> gives  us illuminance of 2500 lx).
>>> Any idea why we are getting these high illuminance values for 15  
>>> and  30 degree blind angles?
>> Is this for a single time of day/sun angle? My guess is that the   
>> steeper slat angles are letting some direct sun to strike your  
>> sensor  points close to the window. Check the slat spacing, and  
>> the blind  section overall.
>> - Rob Guglielmetti