[esp-r] Re: implementing different PCM models

[Juanita Solano Guzmán]

Hi Mohamad,

thank you very much for the information. I'll try to implement it. I just
realized that my ESP-r is not very up to date so I don't seem to have the
files of the cellular_PCM example. I would have to talk to the Admin to get
the latest ESP-r version, but in the meantime, would it be possible to
download the example file directly from the website? I couldn't find it.

Also, is T_solid the temperature at which phase-change occurs from liquid
to solid when looking at the enthalpy curve for cooling? or the temperature
at which phase-change process ends when looking at the melting curve, i.e.
the end point of the melting range?

thank you!

Greetings,
Juanita


Am Fr., 2. Aug. 2019 um 10:16 Uhr schrieb <rida at rhrk.uni-kl.de>:

> Hi Juanita,
>
>
>
> As Achim Clarified, in order to use different PCM model you need different
> inputs. for example type 55 needs 11 inputs value and should be arranged as
> below:
>
>
>
> Tmelt, Tsolid,  Conductivity in solid, Conductivity in liquid, Specific
> heat capacity in solid, Specific heat capacity in liquid, a, b, c, d, e
>
>
>
> For this type you need the DSC data. In order to get the coefficients a,
> b, c, d, e, you have to fit in the latent part from your data to the
> following equation:
>
> Y=(a+cX+eX^2)/(1+bX+dX^2)
>
> Y is latent heat and X is temperature latent heat goes from 0% to 100%
> between Tmelt and Tsolid.
>
>
>
> It is simple to extend the .spm file in your model as Achim described.
>
>    1. Change the type from 53 to 55
>    2. Increase the number of data items to 11
>    3. Include the 11 data as mentioned above under #data.
>
> I would also recommend the exemplar cellular_PCM! It was my first
> direction when I recently used the PCM model.
>
>
>
> Regards,
>
> Mohamad
>
>
>
>
>
> *From:* esp-r-bounces at lists.strath.ac.uk <esp-r-bounces at lists.strath.ac.uk>
> *On Behalf Of *Juanita Solano Guzmán
> *Sent:* 01 August 2019 16:17
> *To:* Achim Geissler <achim.geissler at intergga.ch>
> *Cc:* ESP-r List <esp-r at lists.strath.ac.uk>
> *Subject:* [esp-r] Re: implementing different PCM models
>
>
>
> Hi Achim,
>
>
>
> thank your for your reply. I think my .miscdb file is a copy of
> mscomp.db1.
>
> You mean adding an entry by copying and pasting the code corresponding to
> the models I want into either mscomp.db1 or .db2?
>
>
>
> Best regards,
>
> Juanita
>
>
>
>
>
> Am Do., 1. Aug. 2019 um 15:54 Uhr schrieb Achim Geissler <
> achim.geissler at intergga.ch>:
>
> Hi Juanita,
>
>
>
> your .miscdb file is a model specific db and a copy of mscomp.db2? Anyway,
> what you write sounds correct. The “official” data bases only have an
> example entry for type 53. You would need to add an entry for other types
> or simply extend the .spm file used in the model with the correct sequence
> of data necessary (see below for examples using 53, 55 and 56). Also, maybe
> take a look at the cellular_PCM exemplar.
>
>
>
> Best
>
> Achim
>
>
>
> ===
>
> PCM_t53_fr       # label
>
> # Zone Surf Node Type Opq/Trn
>
>    1   5   4  53   1
>
> # No. of data items.
>
>    7
>
> # Data:
>
>   2.3000E+01  2.0000E+01  0.5000E+00  0.6000E+00  0.2500E+04  0.0000E+00
> 2.3000E+04
>
> # Node No:  2
>
> PCM_t55_bl       # label
>
> # Zone Surf Node Type Opq/Trn
>
>    1   9   4  55   1
>
> # No. of data items.
>
>   11
>
> # Data:
>
>   0.1800E+02  0.2810E+02  0.4000E+00  0.8000E+00  0.1000E+04  0.5000E+04
> -9.467E+01  -7.029E-02  7.117E+00  1.238E-03
>
>  -1.032E-01
>
> # Node No:  3
>
> PCM_t56_br       # label
>
> # Zone Surf Node Type Opq/Trn
>
>    1   8   4  56   1
>
> # No. of data items.
>
>   21
>
> # Data:
>
>   0.1750E+02  0.2250E+02  0.1000E+01  0.2000E+00  0.2000E+00  0.1354E+04
> 0.1317E+04  0.2514E+05  1.0000E+00 -6.973E-01
>
>  -9.0519E-02 8.4889E-02 2.0499E-03 -2.342E-03 -3.4758E-01 -9.9162E-01
> -9.6004E-02 1.0735E-01 2.3089E-03 -2.8074E-03
>
>  -1.2793E-02
>
>
>
>
>
> On 1 Aug 2019, at 15:24, Juanita Solano Guzmán <juanita.solano94 at gmail.com>
> wrote:
>
>
>
> Hello to All,
>
>
>
> I have been looking at the different PCM models available for ESP-r and
> have used number 53, which is already available in the program. In order to
> integrate a new one (I'm interested in testing 54, 56 and 57) would I have
> to copy one of the codes into the .miscdb data base? or how could I
> correctly implement it? In my .miscdb file I only see number 53. I suppose
> is incorrect to just enter values for "a" and "b" according to model 57,
> but with the model 53 still selected.
>
>
>
> Thank you for your help in this and all my previous inquiries. It is very
> much appreciated.
>
>
>
> Best regards,
>
> Juanita
>
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>
>
> achim.geissler at intergga.ch
>
>
>
>
>
>
>
>
>
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