Efficient approach for evaluating the sensitivity of ignition delay time. Implement with Cantera/Python. The repo includes the accepted manuscript and the demo codes, including the mechanism files.

• If you need the relative sensitivities, you can simply use the local temeprature sensitvity. But take care of the positive/negative sign. You can figure out the sign based on intution, or compute one of the sensitvity with brute force approach.

• If you need the absolute value of the sensitvities. You can follow the paper and compute two top sensitive reactions.

Initially, I planed to write an api, later on , I realized that it is unnessary ... But if you find that an api might be useful, you can start from the proposal bellow.

• idtSens(gas, T, P, X, Type = 'UV', factor = 0.05 )

  • gas: The object of IdealGasMixture
  • T: [K]
  • P: [atm]
  • X: Mixture of Fuel and Air, e.g., 'H2:1.0,O2:1.0,N2:3.76'
  • Type: 'UV': Constant Vloume Reactor, 'HP': Constant Pressure Reactor
  • factor: the pertubation factor for the finite difference (brute force) approach, default value is 0.05

Alternatively, the reaction mechanism .xml file can be passed. [Proposal]

GRImech 3.0 which is included in the Cantera package

Weiqi Ji, Zhuyin Ren, Chung K. Law, Evolution of Sensitivity Directions during Autoignition, Proceedings of the Combustion Instituts, 2018, doi:10.1016/j.proci.2018.07.005