OpenFoam using chemkin to make new species
Hello,
I am using the chemkin solver to do a reaction for urea in my chem.inp file // ELEMENTS C H O N END SPECIES CH4N20 HNCO NH3 N2 O2 H2O NO END REACTIONS CH4N2O => NH3 + HNCO 2.62E4 1.0 1.61E4 END // This seems like the correct solver, however, the molar fraction of urea stays constant and the NH3 and HNCO fractions do not increase, they stay at 0. Is there something wrong with this setup? 
Post your case (or as much of it as you are allowed to) and the output from the solver... then we have a possibility to see what's up!

The reactions seem to not be taking place even though they should be.
here is the out.log file Time = 0.24316 Evolving Spray diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 DILUPBiCG: Solving for Ux, Initial residual = 0.000111363, Final residual = 7.84706e07, No Iterations 2 DILUPBiCG: Solving for Uy, Initial residual = 0.000130545, Final residual = 5.54606e07, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 1.04772e05, Final residual = 2.36695e07, No Iterations 1 DILUPBiCG: Solving for CH4N2O, Initial residual = 0.000232098, Final residual = 7.27763e07, No Iterations 2 DILUPBiCG: Solving for HNCO, Initial residual = 0, Final residual = 0, No Iterations 0 DILUPBiCG: Solving for NH3, Initial residual = 0, Final residual = 0, No Iterations 0 DILUPBiCG: Solving for O2, Initial residual = 9.70172e05, Final residual = 5.69026e07, No Iterations 2 DILUPBiCG: Solving for H2O, Initial residual = 7.13753e05, Final residual = 3.23582e07, No Iterations 2 DILUPBiCG: Solving for NO, Initial residual = 9.70173e05, Final residual = 5.69026e07, No Iterations 2 DILUPBiCG: Solving for h, Initial residual = 7.97133e05, Final residual = 3.31688e07, No Iterations 2 DICPCG: Solving for p, Initial residual = 0.0116091, Final residual = 7.76861e10, No Iterations 99 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 time step continuity errors : sum local = 2.56051e13, global = 6.9169e16, cumulative = 1.16239e11 DICPCG: Solving for p, Initial residual = 0.00172367, Final residual = 8.31493e10, No Iterations 91 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 time step continuity errors : sum local = 2.53289e13, global = 2.82293e15, cumulative = 1.16267e11 DILUPBiCG: Solving for epsilon, Initial residual = 1.11152e05, Final residual = 4.46099e07, No Iterations 1 DILUPBiCG: Solving for k, Initial residual = 1.33413e05, Final residual = 3.01646e07, No Iterations 1 Number of parcels in system....  322904 Injected liquid mass...........  79.5796 mg Liquid Mass in system..........  5.07001 mg SMD, Dmax......................  35.3345 mu, 97.3992 mu Added gas mass.................  31.9709 mg Evaporation Continuity Error...  42.5387 mg max T = max(T) [0 0 0 1 0 0 0] 1150 K min T = min(T) [0 0 0 1 0 0 0] 824.49 K ExecutionTime = 144825 s ClockTime = 145381 s Courant Number mean: 0.0248724 max: 0.2412 Calculating averages here is the chemistry properties in the constant folder /** C++ **\  =========    \\ / F ield  OpenFOAM: The Open Source CFD Toolbox   \\ / O peration  Version: 1.6   \\ / A nd  Web: www.OpenFOAM.org   \\/ M anipulation   \**/ FoamFile { version 2.0; format binary; class dictionary; location "constant"; object chemistryProperties; } // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // psiChemistryModel ODEChemistryModel<gasThermoPhysics>; chemistry on; chemistrySolver ode; initialChemicalTimeStep 1e08; sequentialCoeffs { cTauChem 0.001; } EulerImplicitCoeffs { cTauChem 0.05; equilibriumRateLimiter off; } odeCoeffs { ODESolver SIBS; eps 0.05; scale 1; } // ************************************************** *********************** // 
figured out the problem, it was in the dieselFoam solver, i needed to comment out the turbulent time constant, because it caused instabilities in the chemistry solver, and was not necessary to the solution.

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