Investigation of Multi-cycle Working Process on the Pulse Detonation Engine

Tao JIANG, Chunsheng WENG

National Key Lab of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, CHINA

Abstract: To investigate multi-cycle working process on pulse detonation engine(PDE), the Euler-Lagrange model considering chemical reaction mechanism for gas-droplets two phase detonation is built, while the gas and liquid equations are respectively calculated by the conservation element and solution element(CE/SE) method and fourth-order Runge-Kutta method. Numerical results show that the multi-cycle working process of PDE is more complicated; with the increase of cycle times, detonation wave propagation velocity increased, the DDT distance and time decreased., until PDE was stable; Due to lack of gasoline caused by the evaporation of gasoline, PDE performance is better when the reactant equivalent is greater than 1.The results have a value to design of pulse detonation engine.

Keywords: Pulse detonation engine; Euler-Lagrange Model; CE/SE method; Two-phase detonation;

Atomization; Evaporation; Multi-cycle