Numerical modeling and simulation of turbine test rig combustion device (I) partition model based on mixture fraction

A system-level modularization numerical model which can deal with the coupling effect of combustion and flow was established for combustion device, with air and kerosene as reactants, of a turbine test rig and its outlet section, and a thermodynamic calculation scheme based on mixture fraction and a mixture fraction equation were put forward. Comparison with simulation results of the model based on mass-flow-rate mixture ratio and experimental results indicates that the mixture fraction-based model can solve the problem of transient simulation stability in the previous research, and reach the accuracy of simulation consistent with experimental results.