Accession Number : ADP009041

Title :   Laminar Spray Combustion,

Corporate Author : TECHNION - ISRAEL INST OF TECH HAIFA FACULTY OF AEROSPACE ENGINEERING

Personal Author(s) : Levy, Yeshayahou

Report Date : 23 JUL 1992

Pagination or Media Count : 7

Abstract : A spray combustor, with flow velocities in the laminar range, exhibits a unique operating mode where large amplitude oscillations of the flame height occur and are self induced. The phenomenon, not encountered before, is unique to fuel supplied in the form of fine liquid droplets and does not occur while using gaseous fuel. Various flow mechanisms appear to be coupled in such a way as to trigger and maintain the oscillatory motion of the flame. These include heat transfer and evaporation processes, dynamics of two-phase flows and the effect of gravity (and buoyancy forces). Heptane fuel was used in most of the tests. Tests performed with iso-octane showed similar results. (Author)

Descriptors :   *FLAME PROPAGATION, *OSCILLATION, *COMBUSTION, *FUEL SPRAYS, LAMINAR FLOW, AIR FLOW, FUEL AIR RATIO, HEAT TRANSFER, VELOCITY, METASTABLE STATE, ISRAEL, HEPTANES, GASEOUS DIFFUSION SEPARATION, FLOW FIELDS, REACTION KINETICS.

Subject Categories : Air Breathing Engines(unconventional)
      Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE