Search found 3 matches

by Bertrand Sapa
Sun Apr 04, 2021 9:27 pm
Forum: code_saturne usage
Topic: Density values in fast chemistry combustion module
Replies: 3
Views: 2372

Re: Density values in fast chemistry combustion module

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 t...
by Bertrand Sapa
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: 4737

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. 0....
by Bertrand Sapa
Fri Jun 01, 2012 2:49 pm
Forum: code_saturne usage
Topic: How to change gas characteristics in dp_C3P ?
Replies: 1
Views: 2282

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, oxidizer...