Reduction of chemical kinetics of JP-10 Using the Directed Relation Graph Method

Reduction of chemical mechanisms is of particular importance to decrease the computational time of combustion simulations. The main goal of this research is to reduce the chemical mechanism of JP-10. To achieve this, an innovative approach was applied, which combined various mechanism reduction methods, including sensitivity analysis, directed relation graphs (DRG), and directed relation graphs with error propagation (DRGEP). Using this approach, the detailed JP-10 mechanism, consisting of 7,740 reactions and 320 species, was reduced to 257 reactions and 48 species. In this regard, ANSYS CHEMKIN was employed for mechanism reduction and combustion simulation. The combustion simulation results for JP-10 in a homogeneous reactor model were then compared using both the detailed and reduced mechanisms. The results exhibited a high level of agreement, with simulation errors below 10%. Furthermore, the results demonstrated that DRG and DRGEP methods are both fast and accurate in identifying less significant species in the mechanism, whereas the sensitivity analysis method is comparatively slower. Validation of the results with experimental data from other researchers confirmed that the model used in this study is highly accurate, making the proposed mechanism reliable for use in combustion simulations.