Smoke obscuration problem

[gforney]

FDS SVN 9175
SMV SVN 9078 (Sept 16, 2011)

Run the verification called called beam_detector.fds in Verification/Detectors. Open
Smokeview and load the 3D smoke. In the past, you could only see about 5 of the 9 columns.
Now I can see them all.

Original issue reported on code.google.com by mcgratta on 2011-10-10 21:33:22

[gforney]

I'll take a look at it.

Original issue reported on code.google.com by gforney on 2011-10-10 22:35:39

[gforney]

I've reproduced the problem.

Original issue reported on code.google.com by gforney on 2011-10-11 01:00:10

[gforney]

open up the 3d smoke dialog box and do a couple of things 1) change albedo from 0.3
to 0.0  are columns obscured correctly? 

Original issue reported on code.google.com by gforney on 2011-10-11 17:57:40

[gforney]

Should albedo matter (unless the albedo is so low that no light is reflected)?  As long
as a reasonable fraction of the light hitting a column is being reflected, seeing or
not seeing the column should just be dependent on absorbing through the smoke.

Original issue reported on code.google.com by drjfloyd on 2011-10-11 19:02:42

[gforney]

from a physics standpoint I think you are right.  I think there is problem with how
I am treating the albedo term in smokeview.   When I set albedo to 0.0 the columns
disappear as I think they are supposed to, I'm trying to verify that I am looking in
the right place.  Then I will work on getting columns to disappear properly for any
albedo.

Original issue reported on code.google.com by gforney on 2011-10-11 19:12:14

[gforney]

does beam_detector.fds look ok now in the latest smokeview?

Original issue reported on code.google.com by gforney on 2011-11-07 15:11:16

[gforney]

It does. I can barely see the fifth column. Thanks.

Original issue reported on code.google.com by mcgratta on 2011-11-07 19:42:22