Accession Number : AD0750004

Title :   Experimental Study of the Dynamics of a Spherical Flame,

Corporate Author : CALIFORNIA UNIV BERKELEY COLL OF ENGINEERING

Personal Author(s) : Oppenheim,A. K. ; Kamel,M. M. ; Varvatsoulis,C.

Report Date : 1972

Pagination or Media Count : 17

Abstract : Preliminary results of an experimental study conducted to investigate the dynamic behavior of flames in explosive gases are presented. The medium was an equimolar acetylene-oxygen mixture maintained initially at a pressure of 110 torr. and room temperature in an experimental vessel 9 cm in internal diameter. Ignition was performed by means of a neodymium laser beam focused on a 0.3 mm diameter steel wire. Experimental observations were performed by the use of a stroboscopic laser-schlieren system yielding a set of photographic records of wave phenomena at a frequency of 200,000 frames per second. The records reveal the existence of a number of shocks which by a thorough analysis of the blast wave generated by the ignition process, are shown to be due entirely to the flame generated flow field. (Author)

Descriptors :   (*DETONATIONS, *FLAME PROPAGATION), (*EXPLOSIVE GASES, *IGNITION), DETONATION WAVES, FLOW FIELDS, BURNING RATE, SPARK IGNITION, GAS LASERS, EXPERIMENTAL DATA

Subject Categories : Explosions
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE