Ignition Delay Characteristics of Kerosene with Decomposed Hydrogen Peroxide

The ignition chemical delay of kerosene with decomposed hydrogen peroxide was simulated by using n-decane as a surrogate fuel for kerosene. The influences of H2O2 concentration, the H2O2 decomposition rate, and pressure on the chemical delay were investigated. The ignition delay time had the negative temperature coefficient phenomenon for a low H2O2 decomposition rate, and the increasing pressure weakened the negative temperature coefficient phenomenon, which nearly disappeared when the pressure was greater than 4MPa. An RH2O2-dependent coefficient of the ignition delay time was almost not influenced by H2O2 concentration and pressure when the pressure was less than 4MPa, and RH2O2 had a noticeable influence on the ignition delay time at RH2O2<80%. Increasing the H2O2 concentration effectively reduced the ignition delay time at RH2O2<70%, but it had a slight effect on the ignition delay time at RH2O2>70%.