Temperature Distribution Analysis of Pulse Detonation Engines

In pulse detonation engines (PDE), combustion temperatures can rise as high 3000 K across the wave. The continuous exposure to such elevated temperature may risk integrity of structural components engines. order be able estimate heat load accurately. Hence, numerical and experimental studies distribution on a engine model was conducted quantify load. Navier-Stokes conservation equations with viscosity chemical reaction for deflagration-to-detonation transition (DDT) in were solved through computational fluid dynamics. Reactive flow field premixed mixtures (propane-oxygen) modeled process. simulation, short-term (ms) long-term wall heating process(s) are carried out together. Both single multiple detonations simulated tested, simulation results consistent results. show that there is correlation between flux wave structure instantaneous maximum appears region tube wall. transient time space very uneven, difference average large. position formation turning point PDE temperature, at front end lower than back end. fresh have cooling effect wall, which leads increase inner oscillation outside temperature. speed positively correlated frequency. also transfer coefficient has an initiation When large, not initiate studied engine. focus thermal protection different detonations. Heat management highlights important part construction.