I think that is the most possible reason of this error. Let me try first with a single floor model. If it works, then I will be sure that the problem is input for multiple floors and those are not properly connected.
Thanks for your suggestion and time. I will get back to you soon.
Best Regards,
Anisur Rahman
PhD Candidate
College Of Architcture
Illinois Institute of Technology,
Chicago,
Illinois.
From: Edward G. Lyon <eglyon@xxxxxxx>
To: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Thursday, July 25, 2013 11:54 AM
Subject: RE: [EnergyPlus_Support] Re: Airflow Network
I see this is a 15 story building and you use a single mid floor multiple times. I have only used the airflow network with complete models that have all the
interconnected spaces modeled. I am not that familiar with the other example files, do any of them a single floor input for multiple floors? If not, your problem may be that things are not properly connectedâ?¦
Ned Lyon, P.E. (MA, WV)
Staff Consultant
SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
617.285.2162 mobile
781.907.9009 fax
www.sgh.com
From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx]
On Behalf Of Anisur Rahman
Sent: Thursday, July 25, 2013 12:39 PM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Re: Airflow Network
Yes, I increased the number of iterations up to 30000 and convergence limit to 500. It is showing the same error.
Best Regards,
Anisur Rahman
PhD Candidate
College Of Architcture
Illinois Institute of Technology,
Chicago, Illinois.
The default value for number of iterations is 500. Have you tried increasing this or adjusting the convergence criteria?
Ned Lyon, P.E. (MA, WV)
Staff Consultant
SIMPSON GUMPERTZ & HEGER
781.907.9000 main
781.907.9350 direct
617.285.2162 mobile
781.907.9009 fax
www.sgh.com
I tried with INPUT option. But still it is giving the same error. Any further suggestion.
Best Regards,
Anisur Rahman
PhD Candidate
College Of Architcture
Illinois Institute of Technology,
Chicago, Illinois.
I had the same problem today. As written in the I/O file, the AirflowNetwork object with "SurfaceAvarageCalculation" option in the field "Wind Pressure Coefficient Type" only supports simple
geometry (rectangular or squared ones). If your geometry/envelope is different from it you should use the option "Input" which will require all the pressure entries to this building you are modeling.