[esp-r] Re: dailight factors+cfd

[Geissler Achim]

Dear Arianna

maybe check the possible length of file names. I could imagine that your name is too long (I don't really remember if all the radiance code uses the "default" file name length). That could be your problem (your name length including extension is 32 characters).

Further ideas:

The .opt-file should be generated automatically. Check the /rad/ directory for any empty or differently named .opt.

Try generating the missing .opt manually (use any example file present in the exemplars).

Achim



Von: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] Im Auftrag von A.Sdei at brighton.ac.uk
Gesendet: Donnerstag, 16. Februar 2012 13:22
An: Gian Luca Brunetti; esp-r at lists.strath.ac.uk
Betreff: [esp-r] Re: dailight factors+cfd

Thank you Gian Luca,

I got into it, however it doesn't seem to work very well. When I generate daylight factors all the points have zeros as results and I read on esp-r radiance desktop (bottom left window):
File doesn't exist
rad/type2_phd_b6_trees_20_day_fa.opt

and on xterm I get:

rad error generating octree
type2_phd_b6_trees_20_day_fa.oct removed
rtrace: system - cannot expand '@type2_phd_b6_trees_20_day_fa_opt : no such file or directory

do you or anyone else know what this means and what the problems are and how to resolve them and get results for daylight factors with ESP-r? Any suggestion is greatly appreciated, thank you.

Best,

Arianna


From: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] On Behalf Of Gian Luca Brunetti
Sent: 16 February 2012 11:24
To: esp-r at lists.strath.ac.uk
Subject: [esp-r] Re: dailight factors+cfd

Dear Arianna,
to get daylight factors with Radiance from ESP-r, choose browse/simulate -> simulation -> visual impact -> daylight factors.

After that, I think that if you want to get daylight factors plotted as numbers, the menus are self-explaining.

I don't know how to plot daylight factors as countour lines from ESP-r. But I did not look for a way to do it yet.

Best regards

Gian Luca

Gian Luca Brunetti

Politecnico di Milano

Dipartimento BEST

via Bonardi 11

20133 Milano

tel./fax 02 2399 5750

Il 15/02/2012 19.58, A.Sdei at brighton.ac.uk<mailto:A.Sdei at brighton.ac.uk> ha scritto:
Dear All, I can now use radiance desktop via ESP-r and create and view images. I need to find daylight factors, does anyone know how? I would also need to do some ventilation study and I was thinking of using the cfd facility within esp-r.  I would need to do some tests with and without trees, is there a parameter such as porosity within esp-r which I can use to better define the trees that at the moment are just blocks of solid obstruction? Let me know,

kind regards
Arianna

Arianna Sdei
Architect, MPhil (Cantab)
University of Brighton
Research Fellow, IFORE Project
PhD Fellow


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