Adding species in database

March 13, 2006, 06:38

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

March 14, 2006, 06:06

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, 04:15

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.

March 13, 2006, 06:38	Adding species in database	#1
AdN Guest Posts: n/a	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

March 14, 2006, 06:06	Re: Adding species in database	#2
cg Guest Posts: n/a	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.

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December 24, 2012, 23:36		#3
sanan New Member sinan Join Date: Dec 2012 Posts: 1 Rep Power: 0	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

February 23, 2013, 08:34		#4
pghoseju Member Prakash Ghose Join Date: Dec 2011 Posts: 34 Rep Power: 14	I also want to use C7H8. Can I know what are the meaning of coefficients used in thermo.db for different fuel?

May 19, 2017, 04:15		#5
Shamoon Jamshed Senior Member Shamoon Jamshed Join Date: Apr 2009 Location: Karachi Posts: 381 Rep Power: 18	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.