Method for constructing n-nonane low-temperature combustion mechanism model and application of n-nonane low-temperature combustion mechanism model

The invention discloses a method for constructing an n-nonane low-temperature combustion mechanism model. The method comprises the following steps of: S1, constructing a low-temperature combustion mechanism I-stage model; S2, constructing an n-nonane low-temperature combustion mechanism II-level model through a shock tube ignition delay simulation prediction experiment; S3, constructing an n-nonane low-temperature combustion mechanism III-level model through a jet stirring reactor species concentration curve simulation prediction experiment; S4, constructing an n-nonane low-temperature combustion III-level model by adopting a reaction path flow analysis method; and S5, performing sensitivity analysis to construct an n-nonane low-temperature combustion model. The invention provides application of an n-nonane low-temperature combustion mechanism model, which is used for predicting combustion characteristic values of n-nonane in an aero-engine. The method for constructing the n-nonane low-temperature combustion