Hello Camille,
By default, density is computed at atmospheric pressure because of historic use of combustion module.
By checking "Uniform variable thermodynamic pressure in "Calculation features" (since 7.0) or using the keyword ipthrm = 1 in cs_user_parameters.f90, you can activate the ...
Search found 3 matches
- Sun Apr 04, 2021 9:27 pm
- Forum: code_saturne usage
- Topic: Density values in fast chemistry combustion module
- Replies: 3
- Views: 3859
- Fri Aug 03, 2012 2:40 pm
- Forum: code_saturne usage
- Topic: question on the dp_C3P file when JANAF is used
- Replies: 8
- Views: 7454
Re: question on the dp_C3P file when JANAF is used
Hello Sylvain,
If I'm correct, you need 5 O2 to equilibrate your equation, so:
1.C3H8 + 5.O2 ---> 3.CO2 + 4.H2O
Finally, your thermochemistry file should be:
----------------
4 Nb especes courantes
10 Nb de points de tabulation ENTH-TEMP
300. TMIN
3000. TMAX
Especes Gazeuses
C3H8 O2 CO2 H2O
0. 0 ...
If I'm correct, you need 5 O2 to equilibrate your equation, so:
1.C3H8 + 5.O2 ---> 3.CO2 + 4.H2O
Finally, your thermochemistry file should be:
----------------
4 Nb especes courantes
10 Nb de points de tabulation ENTH-TEMP
300. TMIN
3000. TMAX
Especes Gazeuses
C3H8 O2 CO2 H2O
0. 0 ...
- Fri Jun 01, 2012 2:49 pm
- Forum: code_saturne usage
- Topic: How to change gas characteristics in dp_C3P ?
- Replies: 1
- Views: 3013
Re: How to change gas characteristics in dp_C3P ?
Hello Fabien,
on this line : 1 2 -1. -23.80 25.80
the two first number are the reactants (1 fuel, 2 oxidizer), and the last terms are the number of moles of each reactant involved in the reaction
for the reaction C3H8 + 5 (02+3.76N2) -> 3 CO2 + 4 H20 + 5*3.76 N2
-1, one mole of fuel
-23.80 ...
on this line : 1 2 -1. -23.80 25.80
the two first number are the reactants (1 fuel, 2 oxidizer), and the last terms are the number of moles of each reactant involved in the reaction
for the reaction C3H8 + 5 (02+3.76N2) -> 3 CO2 + 4 H20 + 5*3.76 N2
-1, one mole of fuel
-23.80 ...