RE: [EnergyPlus_Support] airflow network - too many iterations

[gu <gu@xxxxxxxxxxxx>]

Marzia:

I am on vacation until next Wed., Nov. 5, 2008. Due to limited access to the 
Internet, I may not be able to help you this week. Could you send me the input 
file directly to me?

Thanks.

Lixing

>===== Original Message From marziasedino <marziasedino@xxxxxxxx> =====
>Hi all,
>
>I am trying to simulate the natural airflow in the core of a
>rectangular building and its interaction with the buildings thermal
>zones.
>If I define openings (simple openings)only in the core my airflow
>network simulation runs properly, but if I add openings on the other
>thermal zones around the core I get the following error message
>
>"Too many iterations (SOLVZP) in AirflowNetwork simulation
>   ** Warning ** AirflowNetwork: SOLVER, Changing values for
>initialization flag, Relative airflow convergence, Absolute airflow
>convergence, Convergence acceleration limit or Maximum Iteration
>Number may solve the problem."
>
>This happens only if I define more than one thermal zone around the
>core. In fact originally I modeled a building with only 2 thermal
>zones: the core itself and the building zone around it, both with
>single openings, and the simulation wouldn't crash.
>
>could you please help me figure out what I am mistaking?
>the file has been uploaded in the Problem Submittals folder and its
>name is "airflow in the core".
>
>thanks a lot in advance!
>
>Marzia
>
>
>
>------------------------------------
>
>The primary EnergyPlus web site is found at:
>http://www.energyplus.gov
>
>The group web site is:
>http://groups.yahoo.com/group/EnergyPlus_Support/
>
>Attachments are not allowed -- please post any files to the appropriate 
folder in the Files area of the Support Web Site.
>
>EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the 
Documentation link and press the "search" button.
>Yahoo! Groups Links
>
>
>


------------------------------------

The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/