[esp-r] Re: Unstable numerical result

[Jon Hand]

A quick test would be to run this simulation again using 4 or 10 time-steps per
hour.  Your constructions might include very thin or very thick layers causing
some difficulty for the solver.

-Jon Hand
________________________________________
From: esp-r-bounces at lists.strath.ac.uk [esp-r-bounces at lists.strath.ac.uk] On Behalf Of Achim Geissler [achim.geissler at intergga.ch]
Sent: 29 August 2010 16:59
To: 武政 孝治
Cc: esp-r at lists.strath.ac.uk
Subject: [esp-r] Re: Unstable numerical result

Hi Koji Tokemasa

there would seem to be two possible sources of problems - your Tokyo
file and your constructions.

As your constructions lead to some kind of error (the fort.0 file?),
the question would be what is the actual difference between your
constructions and those from the standard data base you used? E.g. the
product density*specific heat capacity should be larger than approx.
100 to avoid problems, as far as I recall.

Have you re-imported the climate file in some type of graphing program
and looked at the data in detail in the vicinity of the numerical
problems? Or taken a hard look at the ascii file in that vicinity?

Best
Achim


On Aug 21, 2010, at 12:30 PM, 武政 孝治 wrote:

> Hi.
>
> I calculated some patterns by using ESP-r to want to know the reason
> to generate an error.
>
> I used climatic data of Tokyo and clm67 to calculate.  And, I used
> standard Construction data base and Construction data base that I
> had made for the calculation.
>
> The numerical result assumed to be pdf file was appended. Moreover,
> the graph was appended.
>
> Koji Takemasa ( Dr. Eng. )
> <results.pdf>
> <year.png><fig01.png>_______________________________________________
> esp-r mailing list
> esp-r at lists.strath.ac.uk
> http://lists.strath.ac.uk/mailman/listinfo/esp-r

achim.geissler at intergga.ch





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