高压物理学报2011，Vol.25Issue(6)：514-518,5.
氢氧爆轰波在激波管中的成长机制研究
Study on the Development Mechanism of Detonation Wave for the Hydrogen-Oxygen Mixture in a Shock Tube
王建 1段吉员 1赵继波 1文尚刚 1谭多望1
作者信息
- 1. 中国工程物理研究院流体物理研究所,冲击波物理与爆轰物理国防科技重点实验室,四川绵阳621900
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摘要
Abstract
This paper mainly focuses on the experimental investigation of the gaseous detonation wave build-up mechanism for hydrogen-oxygen mixture in shock tube. Five pressure sensors were used to record the pressures and a high-speed camera was used to capture velocities of flame, shock, or detonation wave. The high-speed camera records the transformation of flame, shock in the ignition phase and the attenuation of detonation wave. The experimental results show that the diagnostic system can effectively measure the DDT. The images of flame propagation show that the flame front is curving and dispersive. It is found that the interaction of shock and turbulent flame is a dominant factor for the onset of explosion. In the smooth tube, experiments indicate that the intensity of shock wave continually increases due to the acceleration of flame. The local explosion occurs in the reaction zone when the intensity of shock wave arrives at a critical pressure pc when some hot spots form in the local explosion centers. At that time, an unsteady detonation wave is formed immediately, and after a period of the propagation or attenuation process,it eventually evolves into a steady detonation wave.关键词
爆炸力学/气相爆轰波/燃烧转爆轰/氢氧混合气体/高速摄影Key words
mechanics of explosion/gaseous detonation wave/deflagration to detonation transition/hydrogen-oxygen mixture/high-speed camera分类
数理科学引用本文复制引用
王建,段吉员,赵继波,文尚刚,谭多望..氢氧爆轰波在激波管中的成长机制研究[J].高压物理学报,2011,25(6):514-518,5.
