journal6 ›› 2001, Vol. 22 ›› Issue (4): 1-7.

• Information and Engineering •     Next Articles

The Attenuation and Reignition of a Gaseous Detonation Propagating Through a Perforated Steel Plate Section


  1. ( Department of Mechanics and Mechanical Engineering, University of Science and Technology of China( USTC) , Hefei 230026, Anhui China)
  • Online:2001-12-15 Published:2013-01-05
  • About author:GUO Chang-ming , male, born in 1945, professor in Dept. of Mechanics andMechanical Engineering ( USTC) .
  • Supported by:

    This project is sponsored by National Science Foundation Committee of China ( NSFC) ( 19872068)

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 perfo-rated 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 De tonation Transition) . The mechanism that provides the immediate spontaneous transition to detonation for rough surface of “absorbing materials” is explored in the paper as well.

Key words: detonation, mach Reflection, triple point, cellular structure

WeChat e-book chaoxing Mobile QQ