[esp-r] Re: simulation

[Achim Geissler]

Dear Artur,

 

I took a quick look at your model – you may want to update your material descriptions in your materials database with realistic values in regard to density and specific heat. All values are 1.0, it seems. This will likely lead to numerical problems sooner or later. The console gives many warnings in regard to physically impossible longwave radiation exchange values – this could be a consequence of the material values and could also at some point lead to a crash of the program.

 

Best

Achim

 

 

 

Von: amisz22 [mailto:amisz22 at op.pl] 
Gesendet: Mittwoch, 16. November 2016 15:34
An: Achim Geissler
Betreff: Re: [esp-r] Re: simulation
Wichtigkeit: Hoch

 

Dear Achim,

 

Thank you for your answer and advise- much appreciated.

 

 

 

I have used same weather files while working on a different building simulation and it worked well. I have also used  two different types of weather files- prepared by myself as well as the one available on ESP-r base. In both cases simulation works only from 1st of January until 1st of April. If you try to do it for a different period of time, e.g. from May to December, there are no results.

 

 

 

I have attached the building's model that I am struggling with, if you would find some time and could have a look into it, I would be thankful. Maybe you would find the reason of the issue described above.

 

 

 

Thank you in advance for your help.

 

 

 

Best regards,

 

Artur.

 

 

 

 

W dniu 2016-11-15 08:37:01 użytkownik Achim Geissler <achim.geissler at intergga.ch> napisał:

Dear Artur, 

  

does the model which works use the same climate file? Have you tried increasing the simulation time span incrementally? Have you then tried simulating “around the problem time” with a short simulation period? The only issue that comes to mind here to me is some problem with climate data at a certain date (assuming all else does not change during the year?). 

  

Possibly firing up the simulation via text mode and piping the output to a file can help. Sometimes messages are gathered here, that show what the issue is. 

  

That is all I can think of, right now. 

  

Good luck! 

  

Best 

Achim 

  

  

Von: esp-r-bounces at lists.strath.ac.uk [mailto:esp-r-bounces at lists.strath.ac.uk] Im Auftrag von amisz22
Gesendet: Montag, 14. November 2016 20:36
An: esp-r at lists.strath.ac.uk
Betreff: [esp-r] simulation
Wichtigkeit: Hoch 

 

 Dear Users, 

  

Could you please help me with solving the below issue: 

  I have created a building model (geometry and the building envelope) and tried to do some simulation. It worked properly when I did it for a period of 3 months ( 1st of Jan until 31st of March), but when I try to do it for a period of six month or longer, there is an error popping up and the simulation process never ends and so the results are not saved. However at the same time when I try to carry out simulation for a different type of building using the same laptop, it works correctly despite the period of time that I choose. 


Do any of you know, what could be the reason of the issue described above? 

  

Thank you in advance for your help. 

Artur. 

 

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