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-   -   Adding species in database (https://www.cfd-online.com/Forums/fluent/40104-adding-species-database.html)

AdN March 13, 2006 06:38

Adding species in database
 
Hello,

I want to know if someone could help me to add new species in the database of PrePDF? I want to put NH4NO3 in the database, because I need it to model combustion of this solid. Thank you

cg March 14, 2006 06:06

Re: Adding species in database
 
In Fluent 6.2 or later, add your species to the thermo.db file in Fluent.Inc\cpropep\data directory. The data is in the NASA format.

sanan December 24, 2012 23:36

Hello,

I want to know if someone could help me to add new species in the database of PrePDF? I want to put c16h29 in the database, because I need it to model combustion of this fluid . Thank you

pghoseju February 23, 2013 08:34

I also want to use C7H8. Can I know what are the meaning of coefficients used in thermo.db for different fuel?

Shamoon Jamshed May 19, 2017 03:15

I want to add liquid oxygen into the data base. The file thermo.db is too confusing. The first line gives the element name , its code, state(S,L or G) and temperature range.
in thermo.db , Oxygen is there with G as its state, so I can easily put O(L) and put another L instead of G to enter my Liquid oxygen.
Problem is that in thermo.db, some of elements , like Al(S) which is a solid has a 'G' in place of state where it should be S.
NASA guides are quite old and do not say something on it. It appears that G is for species if formed after combustion where they will obviously in gaseous form. Please guide me in this regard. It would also mean that I do not need to enter O(liq) because the temperature in the first line will tell solver to use oxygen in liquid or gaseous form.


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