Re: [EnergyPlus_Support] Re: Error while calculating CTFs (InitConductionTransferFunctions)

["Michael J. Witte" <mjwitte@xxxxxxxx>]

Several of the materials are very thick and/or very dense. ST01 is more dense 
than concrete and nearly 0.8m (32 inches) thick.  And GP02 is a little over 1m 
thick.  I do not know exact limits for the CTF method, but generally anything 
massive which is more than 0.6m (2 ft) begins to stretch the limits of the time 
history.

Mike


On 11 May 2007 at 17:22, Adeel wrote:

> Hi Linda,
> 
> I uploaded my modified example file. It has the name:
> DisplacementVent_1ZoneOffice_AA.idf
> 
> The relevant message I get in the .err file is
> ** Severe  ** CTF calculation convergence problem for WALL-1
> 
> If there is some background discussion about the cause of this issue 
> in the documentation please let me know. I am an electrical engineer 
> so this is a little new.
> Thanks so much for your help.
> 
> Adeel
> 
> --- In EnergyPlus_Support@xxxxxxxxxxxxxxx, Linda Lawrie <linda@...> 
> wrote:
> >
> > You are using the example file but changing it?
> > 
> > Please upload your file that is having the error or send directly 
> to me.
> > 
> > At 09:53 AM 5/11/2007, Adeel wrote:
> > >I am experimenting with material:regular thicknesses and densities 
> but
> > >what I am finding is that more often than not, I get a fatal error
> > >while the simulation is calculating CTFs for the various 
> constructions.
> > >It states:
> > >"**FATAL: Program terminated for reasons listed
> > >(InitConductionTransferFunctions)
> > 
> > Linda
> > 
> > EnergyPlus WebSite: http://www.energyplus.gov
> > Owner: EnergyPlus_Support list
> > Member: EnergyPlus Development Team
> > 
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
> 
> 
> 
> 
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> 






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