Accession Number:

AD0644006

Title:

INVESTIGATION OF PLASMA IN LAMINAR AND TURBULENT HYDROCARBON FLAMES,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1966-06-30

Pagination or Media Count:

23.0

Abstract:

The ionization of hydrocarbon-air flames was studied under conditions of moving spherical flames in a closed vessel bomb by means of a one-electrode probe and an oscilloscope. The ion-generating reaction CH O to CH e- in hydrocarbon flames occurs due to transfer of OH radicals and O or H atoms in the reaction zone, followed by reaction H O2 to OH H. The part played by diffusion within the reaction zone obtains confirmation in measurements of ionization in turbulent flames, in the fact that velocity pulses are followed by pulses of ionization current, and also in that the maximum ionization current amplitudes in turbulent flames increase with the turbulence intensity, and are considerably higher than those for laminar flames in the same mixtures. Analysis of data on ionization in a detonation wave of hydrocarbon-oxygen flames results in two alternative concepts of the mechanism of ignition in a detonation wave. Author

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE