Thank you Achim and Jon, As far as I understand I should reorder my priorities and focus on using linear thermal bridges. Swimming in fortran is one of my hobbies, nevertheless I can not spend the next weeks full time on the multigridding feature :) So I will try to dig a little bit more in 2013 About the linear thermal bridge I would like to know the meaning of the coefficients in the "*bridge_start" line. Is it documented anywhere ? Best regards, Olivier <div class="gmail_quote"> 2012/12/19 Jon Hand <<a href="mailto:jon@esru.strath.ac.uk" target="_blank">jon@esru.strath.ac.uk</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> The 3D conduction facility of ESP-r is rarely used - for most people knowledge of it has become obscure/lost. ESP-r is able to deal with linear thermal bridges (so-called psi values) as an approximation based on some steady state assumptions. The zone geometry interface (prj) can detect different join types for surfaces in a zone and allow you to associate a psi value per m of each of these types of lengths. Heat transfer via linear thermal bridges is reported in the zone energy balance. -Jon Hand ________________________________________ From: <a href="mailto:esp-r-bounces@lists.strath.ac.uk">esp-r-bounces@lists.strath.ac.uk</a> [<a href="mailto:esp-r-bounces@lists.strath.ac.uk">esp-r-bounces@lists.strath.ac.uk</a>] On Behalf Of Geissler Achim [<a href="mailto:achim.geissler@fhnw.ch">achim.geissler@fhnw.ch</a>] Sent: 19 December 2012 16:21 To: olivier bounhoure; <a href="mailto:esp-r@lists.strath.ac.uk">esp-r@lists.strath.ac.uk</a> Subject: [esp-r] Re: thermal bridges assessment Hi Olivier I'm afraid you are not the only one with problems with this feature. Some time ago, I also tried to get this up and running, but was also unsuccessful. I managed to get past the core dumps at one point, but was not able to generate useful results. There is a Masters- or PhD thesis as far as I remember, you would need to search on the ESRU site, however. I wouldn't expect this to tell you how to make it work, though. If you are prepared to code-crawl and find out what is wrong, I would be interested in the solution, anyway. Best Achim Von: <a href="mailto:esp-r-bounces@lists.strath.ac.uk">esp-r-bounces@lists.strath.ac.uk</a> [mailto:<a href="mailto:esp-r-bounces@lists.strath.ac.uk">esp-r-bounces@lists.strath.ac.uk</a>] Im Auftrag von olivier bounhoure Gesendet: Mittwoch, 19. Dezember 2012 17:00 An: <a href="mailto:esp-r@lists.strath.ac.uk">esp-r@lists.strath.ac.uk</a> Betreff: [esp-r] thermal bridges assessment Hello, I'm looking for elements about thermal bridges assessment. I did not find any information about multigridding and the dedicated exemplar (namely constr/adapt/cfg/g3d.cfg) does not run "out of the box", unfortunately. Actually it crashes with a segmentation fault. I do not know if it comes from an unpropper model or from my program installation. 1) Is there a tutorial / paper / note on the way of making proper use of the functionallity ? 2) Am I the only one having an issue with the exemplar ? Sincerely, Olivier </blockquote></div>