吉首大学学报（自然科学版）2001，Vol.22Issue(4)：1-7,7.
气相爆轰波在衬多孔钢板管道中的衰减和恢复
The Attenuation and Reignition of a Gaseous Detonation Propagating Through a Perforated Steel Plate Section
摘要
Abstract
The paper presents an experimental investigation that attempts to understand the propagation of gaseous detonation waves in a tube section lined with a perforated steel plate. A stable cellular detonation was generated first in a tube with smooth inner walls, which propagated through a specially designed section lined with a perforated steel plate.Piezoelectric transducers mounted on the top of the section measured the pressure history and velocity of detonation for stoichiometric 2H2 + O2 premixed gas mixture. Results show that the detonation wave is attenuated first by the perforated plate then the pressure rises again. Our experimental results would support this argument: The rough surface of “absorbing materials”, the perforated plate, wire mesh or steel wool etc., can attenuate detonation wave by means of “absorbing” transverse waves. But, on the other hand, it also can cause immediate spontaneous transition to detonation, I.e., spontaneous DDT (Deflagration to Detonation Transition). The mechanism that provides the immediate spontaneous transition to detonation for rough surface of “absorbing materials” is explored in the paper as well.关键词
爆轰/马赫反射/三波点/胞格结构Key words
detonation/mach Reflection/triple point/cellular structure分类
数理科学引用本文复制引用
郭长铭..气相爆轰波在衬多孔钢板管道中的衰减和恢复[J].吉首大学学报（自然科学版）,2001,22(4):1-7,7.基金项目
This project is sponsored by National Science Foundation Committee of China (NSFC) (19872068). （NSFC）
