Affiliation of Author(s):能源与动力学院

Journal:INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES

Key Words:pulse detonation engine rotary valve air-breathing droplet size ignition position

Abstract:In the present study, the ignition effect on detonation initiation was investigated in the air-breathing pulse detonation engine. Two kinds of fuel injection and ignition methods were applied. For one method, fuel and air was pre-mixed outside the PDE and then injected into the detonation tube. The droplet sizes of mixtures were measured. An annular cavity was used as the ignition section. For the other method, fuel-air mixtures were mixed inside the PDE, and a pre-combustor was utilized as the ignition source. At firing frequency of 20 Hz, transition to detonation was obtained. Experimental results indicated that the ignition position and initial flame acceleration had important effects on the deflagration-to-detonation transition.

ISSN No.:0334-0082

Translation or Not:no

Date of Publication:2017-05-01

Co-author:Wu, Yuwen,shenyujia,Zhao Wei

Correspondence Author:Han Qixiang