To investigate the effect of inlet temperature and equivalence ratio on the working process of pulse detonation engine

the Euler-Lagrange model considering chemical reaction mechanism for gas-droplets two-phase detonation was built

while the gas-droplets two-phase detonation equations were calculated respectively by the two-dimensional space-time conservation element and solution element(CE/SE) method and variable-step fourth-order Runge-Kutta method. Numerical results show that increasing the inlet temperature can accelerate the droplets atomization and evaporation

shorten the deflagration to detonation transition distance and time

and reduce the peak pressure of detonation wave; when equivalence ratio is less than 1.1

increasing the equivalence ratio can shorten the deflagration to detonation transition distance and time and also increase the peak pressure and speed of detonation wave; when equivalence ratio is greater than or equal to 1.1

increasing the equivalence ratio can slightly shorten the deflagration to detonation transition distance and time and also increase the speed of detonation wave

but has a very small effect on the peak pressure of detonation wave.