吸气式脉冲爆震发动机反压传播规律研究

推进技术 ›› 2013, Vol. 34 ›› Issue (3): 428-432.

• 新型动力 • 上一篇

吸气式脉冲爆震发动机反压传播规律研究

彭畅新,王治武,郑龙席,卢杰,陈星谷

西北工业大学动力与能源学院,陕西西安 710072;西北工业大学动力与能源学院,陕西西安 710072;西北工业大学动力与能源学院,陕西西安 710072;西北工业大学动力与能源学院,陕西西安 710072;西北工业大学动力与能源学院,陕西西安 710072

发布日期:2021-08-15
作者简介:彭畅新(1985—),男,博士生,研究领域为燃烧学和新概念发动机应用基础。 E-mail:mingyueqingxi@163.com
基金资助:
国家自然科学基金项目(51176158)；陕西省自然科学基金资助项目(S2010JC3660)；高等学校博士学科点专项科研基金新教师类资助项目(20116102120027)。

Investigation on Propagation of Back-Pressure in Air-Breathing Pulse Detonation Engine

School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China;School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China;School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China;School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China;School of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, China

Published:2021-08-15

摘要/Abstract

摘要： 以汽油为燃料,空气为氧化剂,在内径为60mm的吸气式脉冲爆震发动机上进行了反压传播规律实验研究。测量了10~30Hz频率范围内进气道内的反传压力。实验结果表明,进气道内的反压峰值随着工作频率的增加而增加,两者基本呈线性关系。随着工作频率的增加,压力波动的时间占每个工作循环时间的比例增加。压力脉动比在20Hz时达到最大。建立了数值模型,采用小能量点火及温度梯度自适应方法,计算得到了反压的形成及传播特性。计算结果印证了反压是由于回传爆震引起的。将计算结果与实验结果进行了比较,结果表明两者符合地较好。 

关键词: 爆震; 发动机; 反压; 实验; 数值模拟 

Abstract: With gasoline as fuel and air as oxidizer, experiments were performed to investigate the propagation of back-pressure in an air-breathing pulse detonation engine (PDE) with inner diameter 60mm. The back-pressure was measured at different operation frequencies ranging from 10Hz to 30Hz. The experimental results show that the back-pressure approximately increases linearly with increasing frequency. The ratio that the time of pressure fluctuation to a cycle time increases with increasing frequency. The pressure oscillation has a maximum value with operation frequency of 20Hz. The numerical model was developed and the characteristic of formation and propagation of the back-pressure was numerically investigated. The simulation results confirm that the back-pressure is induced by the retonation wave. The experimental and numerical results agree well,indicating that the method of simulation can reasonably reflect the propagation process of back-pressure. 

Key words: Detonation; Engine; Back-pressure;Experiment; Numerical simulation

彭畅新,王治武,郑龙席,卢杰,陈星谷. 吸气式脉冲爆震发动机反压传播规律研究[J]. 推进技术, 2013, 34(3): 428-432.

PENG Chang-xin, WANG Zhi-wu, ZHENG Long-xi, LU Jie, CHEN Xing-gu. Investigation on Propagation of Back-Pressure in Air-Breathing Pulse Detonation Engine[J]. Journal of Propulsion Technology, 2013, 34(3): 428-432.

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吸气式脉冲爆震发动机反压传播规律研究

Investigation on Propagation of Back-Pressure in Air-Breathing Pulse Detonation Engine

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