Difference between revisions of "Auto-ignition CH 4/Air flame with scheme GRI12"

Latest revision as of 11:33, 17 January 2019

Objectives

The AutoIgnition_GRI12 test case shows an example of CH4/Air auto-ignition using the GRI12 mechanism.

Key parameters

We are at atmospheric pressure, and the fuel is injected in its gaseous form (no evaporation model). We are using the stochastic configuration and we follow only one premixed CH4/Air fluid particule for ignition.

Characteristics of the premixed particule (Phi = 1) :

  listInlets.push_back(new MultipleInlet(
               /*Temperature*/ 1000,
               /*Pressure*/ 1E+05,
               /*Mass flow rate*/ 0.001,
               /*Xk*/ "",
               /*Yk*/ "CH4:0.0550661, O2:0.220264, N2:0.72466990",
               /*Evaporation model*/ false,
               /*Droplet diameter*/ 0.0,
               /*Evaporation time*/ 0.0,
               /*Liquid density*/ 0.0,
               /*Evaporation latent heat*/ 0.0));

Characteristics of the burned gases inlet : (This inlet should always be present as it defines mixing time, time step and the iteration number. The mass flow rate is put to 0 in order not to consider this inlet.

  listInlets.push_back(new Characteristics_MultipleInlet(
               /*Temperature*/ 1000,
               /*Pressure*/ 1E+05,
               /*Mass flow rate*/ 0,
               /*Xk*/ "",
               /*Yk*/ "",
               /*Evaporation model*/ false,
               /*Droplet diameter*/ 0.0,
               /*Evaporation time*/ 0.0,
               /*Liquid density*/ 0.0,
               /*Evaporation latent heat*/ 0.0));
               /*mixing_time*/ 10000,
               /*delta_t*/ 1e-05,
               /*nbIterations*/ 150000,
               /*Useless variable*/ true));

Results

Compute Trajectories