煤油/空气吸气式脉冲爆震发动机试验研究  

Experimental investigation on a kerosene/air air-breathing pulse detonation engine

作　　者：王治武[1] 严传俊[1] 范玮[1] 郑龙席[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072

出　　处：《实验流体力学》2009年第3期35-39,共5页Journal of Experiments in Fluid Mechanics

基　　金：国家自然科学基金(50336030);中国博士后基金(20080431252);西北工业大学科技创新基金(2008KJ02021)

摘　　要：在内径50mm的吸气式无阀脉冲爆震发动机模型机上,以煤油为燃料,空气为氧化剂,成功进行了两相脉冲爆震试验。研究了煤油/空气推进剂的点火、起爆过程与特点,发现燃油粒度对PDE的点火-起爆影响至关重要。粒度较小时无论煤油是否加温均可成功生成爆震;而提高燃油温度有利于煤油的快速点火和加速火焰传播速度,但在燃油粒度较大时没有生成爆震。与汽油/空气推进剂相比,煤油/空气PDE起爆难度较大,且点火-起爆时间显著增加;随着频率增加,两者的点火-起爆时间差值逐渐减小。This paper focuses on investigating the ignition and detonation-initiation performance of kerosene/air based on an air-breathing two-phase valveless pulse detonation engine （PDE） with inner diameter of 50ram. A flash vaporization system was used to heat the kerosene and to observe the effect of fuel temperature on ignition-detonation performance of PDE. And the centrifugal nozzle and air-assisted atomizer were used to investigate the fuel droplet size effect on detonation-initiation performance. The results indicated that increasing ignition energy and fuel temperature were helpful for quick ignition and flame acceleration although detonation didn＇ t occur when the centrifugal nozzle was used. When air-assisted atomizer was used, detonation was initiated successfully no matter the fuel was heated or not. However, the ignition-detonation time of kerosene/air in air-breathing PDE at several operation frequencies was longer than that of gasoline/air respectively.

关 键 词：脉冲爆震发动机 煤油/空气 点火 起爆 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]