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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 connected�



Ned Lyon, P.E. (MA, WV)
Staff Consultant

SIMPSON GUMPERTZ & HEGER
781.907.9000�main
781.907.9350 direct�
617.285.2162 mobile�
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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.



From: Edward G. Lyon <<mailto:eglyon@xxxxxxx>eglyon@xxxxxxx>
To: "<mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx" <<mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx>
Sent: Thursday, July 25, 2013 11:28 AM
Subject: RE: [EnergyPlus_Support] Re: Airflow Network





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
<http://www.sgh.com>www.sgh.com



From: <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx [<mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of Anisur Rahman
Sent: Thursday, July 25, 2013 12:17 PM
To: <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: Re: [EnergyPlus_Support] Re: Airflow Network





Hi�Bruno Scalet,



Thanks again.



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.



From: Bruno Scalet <<mailto:bruno.scalet@xxxxxxxxx>bruno.scalet@xxxxxxxxx>
To: <mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx>EnergyPlus_Support@xxxxxxxxxxxxxxx
Sent: Wednesday, July 24, 2013 4:36 PM
Subject: [EnergyPlus_Support] Re: Airflow Network





Hello,



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.



I hope I've helped you.



Greetings,



Bruno Scalet










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