[FLASH-USERS] Setting of average atomic mass

[pchang]

Hi Andy,

I tried to follow LaserSlab example and I can create three materials 
"CDN", "GasR", "GasB". In the log file, I do see the Multifluid database 
contents.

Initially defined values of species:
Name     Index          Total   Positive  Neutral   Negative  bind Ener 
Gamma   eosType
cdn         13       2.70E+01  1.30E+01 -9.99E+02 -9.99E+02 -9.99E+02  
1.40E+00   321
gasb        14       4.00E+00  2.00E+00 -9.99E+02 -9.99E+02 -9.99E+02  
1.67E+00   321
gasr        15       4.00E+00  2.00E+00 -9.99E+02 -9.99E+02 -9.99E+02  
1.67E+00   321

In the export file, I also have three materials occupying at the right 
locations. However, I found that it still uses the global "gamma", not 
ms_CDNGamma, ms_GasBGamma, ms_GasRGamma. Also, it still uses A=1 for 
calculating the pressure from given density and temperature.

In the Config file, I have:

REQUIRES physics/Hydro
REQUIRES physics/Eos/EosMain/Gamma
REQUIRES Multispecies

I couldn't figure out why the ms_CDNA, ms_GasBA, and ms_GasRA are not 
used in the program. Any suggestions? Thank you.

Best,

Po-Yu

Andy Sha Liao 於 2022/5/30 下午 09:46 寫道:
> Po-Yu Chang,
>
>
> I recommend that you study the LaserSlab example and then build your 
> simulations from that example.
>
> LaserSlab uses the Multispecies unit where you can set materials, 
> e.g., argon, so you can study how they interact to apply to your own 
> problem.
>
>
> Andy
>
>
>
>
> On Sun, May 29, 2022 at 1:35 PM Po-Yu Chang <pchang at mail.ncku.edu.tw> 
> wrote:
>
>     Hi all,
>
>     I am simulating a pure hydrodynamic problem at this point.
>     Therefore, I
>     modified the example "FlatPlate" for my simulations. In that
>     example, I
>     specified the pressure and the density of the gas. Then, the
>     temperature
>     is calculated somewhere in the program. I found that the average
>     atomic
>     mass is A=1. However, I would like to simulate an Argon gas, i.e.,
>     A=40,
>     but I couldn't find a place to define the average atomic mass. Do
>     anyone
>     know how I can define the average atomic mass? Thank you.
>
>     Cheers,
>
>     Po-Yu
>
>     -- 
>     Po-Yu Chang
>     Assistant Professor
>     Institute of Space and Plasma Sciences (ISAPS)
>     National Cheng Kung University (NCKU)
>     No.1, University Road,
>     Tainan City 70101, Taiwan
>     (TEL) +886-6-2757575 ext. 65916
>     pchang at mail.ncku.edu.tw
>     http://capst.ncku.edu.tw/PGS/
>
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-- 
Po-Yu Chang
Assistant Professor
Institute of Space and Plasma Sciences (ISAPS)
National Cheng Kung University (NCKU)
No.1, University Road,
Tainan City 70101, Taiwan
(TEL) +886-6-2757575 ext. 65916
pchang at mail.ncku.edu.tw
http://capst.ncku.edu.tw/PGS/
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